Dozens of heating devices have been developed to heat residential and non-residential premises, ranging from simple electric fireplaces with heating elements to powerful heat guns. They differ in their dimensions, performance and other technical characteristics, which greatly facilitates the selection of a suitable unit. A thermal curtain for a home is one of the heating devices described above. In some ways it resembles a heat gun, but plays a slightly different role - we will talk about this as part of our review.
In it we will look at:
- The operating principle of thermal curtains and their purpose;
- The main types of thermal curtains;
- Technical characteristics of the equipment;
- Additional options;
- The most popular models.
The review will be rich, there will be a lot of information.
How do thermal curtains work?
Thermal curtain is heating device, generating flow warm air. For this purpose, a fan and a heating element are provided inside it. Some association with a fan heater suggests itself, and this is true, since these devices are structurally similar. They differ only in purpose, which will be discussed further. Otherwise, they have an identical device and serve to generate warm air.
If a conventional fan heater simply expels heated air masses into the room, heating it, then the thermal curtain performs a slightly different function. Its task is to create a descending air flow that prevents cold air from entering from the outside. This is true in entrance areas, where people often slam doors and bring cold into warm rooms. The thermal curtain, generating heat, mixes it with cold air masses and neutralizes their impact.
The operating principle of the unit itself is as simple as three kopecks. A fan installed inside captures cold air and forces it through the heating element, after which it is sent down. By opening doors, people drive cold air masses into the room, which subsequently enter the thermal curtain and heat up. It should be noted that the air temperature under the device itself is quite high; being in this area is not very comfortable.
Thermal curtain is a reliable and convenient device, providing high-quality protection from many adverse external factors.
Other features of thermal curtains:
- Provide protection against the penetration of insects - they are simply knocked down by tight air currents;
- These thermal heaters can work as conventional fans;
- Some curtains are equipped with an air filtration function, making the atmosphere in the house healthier;
- The presence of thermoregulation - if you choose a thermal curtain with a thermostat, it will regulate the air temperature in the heated area and save energy.
Now you know how a thermal curtain works and what it can do.
Purpose of thermal curtains
These units are used mainly in non-residential premises, but in houses they are much less common. The thing is that the vast majority of them are quite powerful units with high performance. But in houses and apartments such performance is simply not needed. For example, a thermal curtain with a power of 1 kW can drive through itself up to 300-400 cubic meters of air per hour - this is not relevant in residential premises.
Thermal curtains have found their application in commercial buildings - these can be shops, warehouses, production workshops. In a word, they are necessary where there is a large number of people passing through, often slamming doors. A typical example of this is any store - thousands of customers visit it every day, cooling the air in the sales area. The use of a thermal curtain will save accumulated heat.
If necessary, the thermal curtain can also be used in a residential building. If you actively use your personal yard in winter, then it will help keep warm in the hallway or at the back entrance. And by hanging it outside, near a place to relax, you can create excellent conditions for outdoor gatherings - in this case, you will need an infrared thermal curtain, silent and effective.
By the way, the thermal curtain with infrared principle The action will also come in handy in residential areas - here it will play the role of a heating device. You just need to choose the right power. Such a heater is also useful in commercial premises - barns, garages, agricultural buildings and much more.
Types of thermal curtains
When choosing a model, you should take into account the dimensions of your doorway. The width of the blown-out heat flow of the curtain should be wider than this indicator.
Next we will tell you what types of thermal curtains are. The most popular devices are horizontal. They are mounted above doorways and entrances and drive air from top to bottom. These are the ones we see in stores and shopping centers where there is a lot of foot traffic. The units differ in their size and performance, just like any other equipment.
Vertical thermal curtains are installed not on top of the doorway, but on its sides. There are two air flows here - one on the right and the other on the left. In terms of their efficiency, they are not much different from their horizontal counterparts, but they are more convenient for installation in rooms with low ceilings and high doors (when there is simply not enough free space above the doorways).
Built-in thermal curtains are the least common, as they have a high price. They are built into ceilings and are distinguished by their invisibility. This is relevant in rooms with designer renovations, but in most cases, hiding them is not required. Therefore, they are quite rare on sale.
We can also highlight several other types of thermal curtains. But they are unlikely to be suitable for heating houses. Here is their list:
- Infrared - most often used in shopping centers and enterprises where it is necessary to prevent cold from entering the premises without creating excessive noise;
- Water - in some ways they resemble in-floor convectors with forced convection. They are distinguished by their increased power and high productivity;
- Gas - these thermal curtains operate on natural or liquefied gas, but they cannot be called safe (like any gas equipment).
Of all this, only infrared devices can be used at home.
Water thermal curtains are most often powered by heating systems - inside them there are radiators blown by fans through which coolant flows.
Advantages and disadvantages of thermal curtains
We will not take into account powerful industrial thermal curtains, but will pay attention to small-sized and low-power units powered by electricity. Let's look at their main pros and cons. Let's start with the positive features:
If the width of the passage exceeds the width of the air flow of the thermal curtain, then it makes sense to install two units side by side. Any gap in the coverage area greatly reduces the overall efficiency of the system.
- Compactness – despite all their performance, thermal curtains are small in size;
- High performance – thermal curtains can pass through a huge amount of air;
- Large selection of power - from 1-2 kW and above;
- Excellent reviews from customers - everyone who has ever encountered thermal curtains knows about their high efficiency;
- Reliable protection against the penetration of dust, smoke, exhaust gases and insects;
- The ability to work in the summer as fans with a very important function - in the summer they will prevent heat from penetrating into the premises.
There are also some disadvantages:
- High electricity consumption is typical for all heating electrical appliances;
- Noise – high-performance fans installed inside these devices are noticeably noisy, which creates difficulties for their use in residential buildings;
- The heating elements in these units burn oxygen - therefore, the premises must be ventilated.
Despite the tangible disadvantages, it is difficult to do without them.
Calculation of the thermal curtain
Let's talk about calculating a thermal curtain for a home. The main parameter is the height of its suspension - the required initial speed depends on it. The thing is that on the opposite side (near the floor, when installing equipment above the doors), the air flow speed should be 2-3 m/s. If this figure is less, then outside air will be able to penetrate the room - the thermal curtain will only waste electricity. If the performance is too high, the heat will fly out.
At best, an incorrectly selected model may simply not give a positive result. And at worst, it can make the situation worse.
The initial speed directly depends on the working diameter of the fan. For example, with a diameter of 180 mm, the initial speed will be 15 m/sec. As for power, it all depends on the area of the room and performance.
The optimal performance indicator for a doorway with a width of 800-1000 mm and a height of 2000-2200 mm is from 700 to 900 cubic meters. m/hour, power – 6 kW (a little more is possible). For more accurate calculation For all indicators, we recommend using online calculators.
Temperature management
Any heating equipment requires a temperature controller. Otherwise, it will consume too much electricity, clearly overheating the air in heated rooms. The simplest thermal curtains have built-in thermostats - they analyze the temperature of the intake air, turning the heating elements on and off.
A remote thermostat for a thermal curtain is an element of much more powerful devices. It is an electronic or mechanical thermostat, controlling the operating modes of the equipment. When the air overheats, it turns off the heating and only the fan runs. If the air cools too much, the thermostat turns on the heating element. There may also be controls for other functions.
Simple household air curtains use simple remote controls remote control, operating via infrared channel.
Choosing a thermal curtain - main criteria
Next, we will look at how to choose a thermal curtain. As we have already said, the first two indicators are suspension height and performance. It is also necessary to pay attention to the maximum dimensions of doorways. If the heater will be used as auxiliary heating of residential premises, its power should be 20-40 W per 1 sq. m. Here we can use any suitable models.
Having such a thermostat, you can remotely and accurately adjust the operation of the device.
We also pay attention to the way functions, temperature and performance are controlled. Units with remote controls – wired or wireless – are more convenient. Thanks to this, you can adjust the operating parameters of the equipment from a more convenient place. External thermostats are in most cases purchased separately.
The type of installation is determined individually - in home spaces where low-power thermal curtains are traditionally used, horizontal models are most often installed. As for vertical units, they are intended for use in commercial and industrial premises.
As for brands, here we recommend taking a closer look at foreign-made thermal curtains for your home. There are also some good domestic units on sale – as an example, let’s take heaters from the Tropic and Teplomash brands. We also pay attention to the following details:
- The ability to work as a fan - useful in the summer;
- The presence of a thermostat will ensure maintenance of the set temperature and save energy;
- The presence of overheating protection will protect the equipment;
- Noise level is a relevant parameter for home use, because the house should be quiet;
- Installation type: wall or ceiling.
The right choice will ensure reliable, stable and uninterrupted operation of the equipment.
You can get acquainted with the descriptions of certain models in our review - we will look at the most popular units. You can also look into the Yandex.Market product aggregator and select equipment that is suitable in terms of characteristics and cost through it.
Most popular models
If you are planning to buy a thermal curtain, you will find the information from our review useful. Let's take a look at the most rated devices and describe their technical characteristics.
The power of the thermal curtain is 3 kW, so this unit can be used for heating apartments and private houses. The heater is also useful in technical and utility rooms - workshops, garages, outbuildings and much more. The price of the heater varies from 3.5 to 5 thousand rubles. The air curtain capacity is 350 cubic meters. m/hour, installation height – 2.5 m. Stepwise power adjustment is provided – 1500 or 3000 W at the choice of the consumer.
The main advantage of this heater is its attractive design, which makes it possible to use it in residential buildings.
When selecting a low-power thermal curtain, be sure to pay attention to this model. It is intended for use in private homes, utility and outbuildings, garages and small shops. Its power is 2 kW, productivity is 300 cubic meters. m/hour. The device is designed for horizontal wall installation at a height of 2.5 m. The control here is built-in, mechanical. Can be used as a simple fan. The noise level is only 45 dB - this is a fairly low-noise thermal curtain.
One of the simplest thermal curtains. The model is not intended for domestic use, as it is different high power and productivity - 4.5 or 9 kW, 840 cubic meters. m/hour. It is possible to operate in simple fan mode. The fact that this device is not for the home is indicated by its appearance– somewhat “clumsy” and angular. The maximum installation height for this model is 2.2 m. There are only two controls on board - a general switch and a power selection switch.
We have before us another rated thermal curtain with a power of 9 kW. The productivity of the unit is 900 cubic meters per hour, it is intended for installation in shops, supermarkets, industrial and warehouse premises. There is a power control system on board, and it is possible to operate in ventilation mode. Despite its impressive power, the unit is compact in size and light in weight.
Video
Not everyone country houses are equipped with an independent heating system, and some do not have a stove or fireplace, not to mention warm floors and other delights of life. Sometimes there is simply not enough heat to create a comfortable environment, and summer residents often purchase mobile heating devices. However, there is a chance to save on purchasing an expensive device and assemble the fan heater yourself, using scrap materials.
It is impossible to heat the entire house or even one with a conventional household fan heater. large room, but it is ideal for creating a comfortable atmosphere in a work or sleeping place, as well as in a small room.
Which fan heater is better, video
Self-installation of a fan heater
Before self-assembly It is necessary to carefully study the design of the fan heater. It consists of three main parts:
- separate case (metal or plastic);
- fan;
ceramic, spiral or tubular heating element.
The size, power and design of modern fan heaters allow them to be used in the most for various purposes- from a simple garage to a living room in a house
The installation method, dimensions and power of heaters vary. The principle of operation is quite simple: a fan directs a flow of cold air to a heating element, where its temperature rises by a certain number of degrees, and then, already heated, it spreads throughout the room. The main advantage of a stationary heating device is efficient, fast heating of air in a limited area. In addition, the small device is convenient to carry from place to place and use only when necessary.
Blue arrows indicate cold air that enters the device body and, under the action of the fan, rushes to the heating elements. Red - heated air having a certain direction
Today the market offers great amount heating equipment for rooms of different sizes. Thermal curtains were often used. You can read more about this unit in our article:
Many models, including self-made ones, can be used in hot weather by turning off the heating elements, thereby turning the device into a regular fan.
Fan heaters with low power are sold at prices ranging from 500 to 700 rubles. For the same money you can build a more powerful device by spending only on a controller, fan or power supply
After studying the device diagram, you need to select the parts that will be useful for assembly. Most of them don’t even have to be purchased: in any home there will be faulty devices, suitable materials, wires, fasteners, and tools. You can choose one of the proposed options or design your own. Let's tell you in more detail how to make a fan heater with your own hands from a duct fan and a power supply.
Directional heat gun
Our own heat gun has enough power to easily heat a garage, utility room or office in the house
For assembly you will need:
- a piece of plywood 16 mm thick;
- fan (duct);
- temperature and speed controllers;
- PBEC heating element (2.2 kW);
- fasteners (clamp, bracket, studs, nuts, washers);
- wheels.
We cut out a rectangle of approximately 47 cm x 67 cm from plywood, sand the rough edges and corners.
The plywood base was not chosen in vain: it is light, flat, and most importantly, does not conduct electricity, which is important in the event of force majeure circumstances
We connect two central parts with a coupling - the fan and the heating element. We fix the resulting structure on a plywood base using a bracket and a plumbing clamp.
We select fasteners in such a way that they firmly fix the elements of the device and do not cause them harm. For example, self-tapping screws are perfect - they do not destroy plywood
Self-tapping screws (16 mm) are suitable for fastening. We install a temperature sensor (for example, TG-K 330), which is necessary to control the temperature, next to it there are two more devices - for adjusting the speed and temperature.
When connecting the parts of the fan heater to each other, do not forget about the safety of the device: the connection points of wires and cables must be insulated
Pulsar 3.6 is suitable as a thermal regulator. After installing all the necessary devices and parts, we connect them according to the diagram.
Device control circuits can be found in specialized literature, instructions for devices such as an electric fan, or on specialized websites
For ease of use, we screw wheels to the plywood base.
Small rollers screwed on the bottom side make the homemade fan heater more convenient to move around the room, especially if it is heavy.
Try to place the device parts in such a way that, if necessary, it is easy to disassemble each of them and replace failed elements
Like any homemade fan heater, this device has disadvantages. For example, when the device is stopped, the voltage on the heating element remains, and this is quite dangerous, since overheating occurs and possible emergency situation. The situation can be corrected by installing a relay to timely turn off the power supply to the temperature controller. Another disadvantage is inadequate heating of the room, but this is a disadvantage of almost all stationary fan heaters.
Heating device from the power supply
The heating device from a computer power supply is no different in appearance from it, since the main elements - the fan and the heating element - are located inside the case
Required parts and materials:
- old computer power supply;
- power supply 12 V (up to 300 mA);
- thermal fuse;
- heat shrink;
- fasteners and wires;
- soldering iron;
- 3 m nichrome wire;
- fiberglass sheet.
The role of the case will be played by the old PC power supply, so we take out all the internals from it, except for the cooler.
Everything except the cooler from the power supply must be removed. In order to disassemble an old PC power supply and assemble a fan heater from it, you need tools familiar to home use - wire cutters, a hacksaw, pliers and a screwdriver
We construct a frame for the heater from fiberglass. We cut the material with a hacksaw, and then individual elements connect using a soldering iron. We prepare the heater as follows: we wind a wire in the form of a spiral onto the prepared frame and fix its ends with screws. We connect the screws with wire. We equip the heater power cable with a thermal fuse that will turn off the device if it overheats. Overheating is considered the moment when the temperature exceeds the threshold of +70°C.
To power the fan, we insert a 12 V power supply into the case. The power supply can be purchased or made independently. We connect the fan - when electric current is supplied, it begins to rotate. We assemble the remaining elements according to the diagram and check the finished device for functionality.
It looks something like this circuit diagram hand-assembled fan heater. The role of the power connector will be played by the power switch of the new device
Don't forget to place your homemade fan heater on a safe fireproof stand or rubber mat to prevent fire in the event of an emergency.
Safety measures must be observed when operating any heating equipment, including oil heaters:
You see, knowing what the device consists of and how it functions, you can quickly fix the breakdown or replace one of the elements with a more modified one. Small homemade devices They work for a long time without repair and have many applications. For example, the second model (from those proposed above) can be used in an electric fireplace as a heating element.
To create a favorable microclimate in the room, it is necessary to maintain comfortable temperature and avoid drafts. This is especially true for crowded places where doors are opened very often. Save internal heat, a thermal curtain on the front door.
In the winter season, dense cold air, which spreads along the floor, is rapidly directed into the room through and squeezes out warm light air. If you add a wind component to such normal air exchange, then strong drafts will circulate in the room. In this case, when the door is often opened or constantly kept open, not a single heating device can cope with heating the room. Here it is necessary to create a powerful flow of warm dense air, the pressure of which would prevent the pressure of cold air masses that come from the street.
The thermal curtain copes with this task perfectly. It is a kind of cold air cutoff at the entrance doors. Its operating principle is similar to that of a heat fan. It is able to reliably protect the premises from the penetration of drafts and cold from the street, and its inhabitants from diseases.
When correct calculation all parameters of heat flow, it will not only prevent the penetration of cold masses and prevent heated ones from escaping outside, but also helps the heating system, due to the fact that most of it returns to the room.
The air curtain can be used not only in the winter season. Her work is also justified in the summer season. The directed air mass prevents cool indoor air from escaping into the street, and heated summer heat street person - to enter the premises.
Regardless of the season, the curtain performs another important function. It protects the internal microclimate of the room from the penetration of various suspensions harmful to human health along with the street air. The curtain can keep out rain, snow, dust and hordes of small insects.
Helpful advice! An air curtain allows you to zone rooms, creating different microclimates.
Properly selected equipment can save about 30% of the energy spent on heating and air conditioning a room. In addition, the device itself does not take up much usable space and does not clutter the interior of the room.
Thermal curtain for the front door: design and principle of operation
In appearance, the thermal curtain resembles indoor unit air conditioner with a pronounced elongated body. Air is taken from the room through a grill located in its upper part. At the bottom of the body there is a nozzle through which it comes out under pressure air flow. Control buttons can be located on the body itself or built into a remote unit, which should be located near the device. Some curtain models have an infrared remote control.
Inside the housing there is a heat exchanger, thanks to which the air is heated, and a turbine-type blower fan, which supplies it under pressure to the outside. The heat exchanger can be a heating element, a spiral or a water heating circuit, which is typical for stationary models.
Many thermal curtains have a built-in filter designed to clean the air mass from contaminants. Almost all models, regardless of manufacturer, have built-in protection against overheating, breakdowns to the body and short circuit. They can also be equipped with thermostatic control of the fan speed and heat exchanger heating level.
Types of air-thermal curtains
There are many varieties of thermal curtains, reviews of which can be found on specialized websites. They all differ in installation method and operating principle.
Depending on the installation option, the curtain can be:
- horizontal;
- vertical;
- universal.
The horizontal device is installed directly above the doorway, window or gate, and is secured using brackets or threaded rods. The vertical thermal curtain is mounted on one or both sides of the doors. The height of the device should occupy three quarters of the height of the doorway. Horizontal models are more bulky and are not suitable for small rooms. Universal curtains can be mounted both vertically and horizontally. It is this mobile design that is the most in demand, since it is a full-fledged additional element heating. It is often used for office spaces and apartments.
Important! Horizontal units are not intended to be installed vertically.
Depending on the type of installation, there are wall-hung and built-in models. The first option is attached directly to the wall. The second one is built into the wall or ceiling at the height of the opening. Such models consist of a module and a decorative grille.
Helpful advice! A thermal curtain built into a suspended ceiling will look very aesthetically pleasing.
Air curtain heat exchanger options
Depending on the presence and type of heat exchanger, curtains are distinguished:
- water;
- electrical;
- without heat exchanger.
The most popular and in demand are electric air curtains that operate on a 220 V network. These devices have high efficiency indicators and are easy to install. Many models are equipped with the ability to smoothly regulate the heating temperature of the air flow. The main disadvantage of electric curtains is the significant energy consumption associated with ensuring the operation of the fan and heating the heat exchanger. In addition, the devices have a certain inertia when starting up, i.e. It takes a certain amount of time for the air curtain to reach operating mode.
For water thermal curtains on the front door, with the serial designation RW, the coolant is hot water. The devices are connected to a heating system or centralized hot water supply through pipes located in the air curtain body. The main advantage of this type of device is minimal operating costs. Here, electricity is spent only on the operation of the fan and control system. However, the device is characterized by a lot of difficulties during the installation process. Here you should additionally install pipes with shut-off valves and control valves.
When installing a water heat curtain, a branch from the general circuit should be provided in advance, which is not always possible with an already installed heating system. It is also necessary to install a filter device for the tubular heat exchanger to prevent it from becoming overgrown. When choosing a curtain, it is necessary to take into account the power of the installation, which must correspond to the capabilities heating system so that the operation of the device does not affect the heating level of the radiators.
Air curtains without a heat exchanger of the RV series are not used for heating air. They are used to protect the premises from street dust, insects and various contaminants. They also prevent conditioned air from escaping outside. They are often used to zone rooms in production workshops, to prevent warm air from entering storage rooms or freezers.
Electric thermal curtains over the door
A heating element, spiral or ceramic heat exchanger can be used as a heat exchanger here. Devices with a spiral are the cheapest and at the same time low-power. You can buy a thermal curtain over the door for 4,000 rubles. Due to the fact that the heat exchanger open type, it very quickly heats the air flow, reaching operating mode. However, such a heating element burns oxygen. Curtains with a spiral are characterized by a minimum service life.
Helpful advice! It is advisable to use devices with a spiral for rooms with a high air exchange rate.
Curtains with heating elements are more effective. He is metal tube, in the middle of which there is a heating element, wire or graphite, and sand. These devices do not burn oxygen indoors and operate for a long time and uninterruptedly. They stand out for their affordable prices. The average cost of a thermal curtain is 20 thousand rubles.
The most modern are thermal curtains with a ceramic heat exchanger, which quickly heats the air to the set temperature and switches to an economical energy consumption mode. This device not only fulfills its intended purpose by cutting off cold outside air, but it also allows you to significantly save energy resources. The disadvantage is the high cost of the thermal curtain in comparison with analogues.
Classification of curtains by purpose
Electric air curtains have serial designations RM, RT and RS, which indicate the purpose of the device. Low-power mini-curtains of the RS series are used for small openings of 1500x80 cm. Their productivity is no more than 500 m³/hour. Curtains are usually installed in transport ticket offices, street kiosks or above customer service windows.
The most popular are the medium-power air curtains of the RM series, which are used for standard openings with a height of 2.5-3 m. They are capable of pumping up to 2000 m³ of air per hour. Models usually have convenient remote units and remote controls. Such mid-range devices are often used for the front door or as a transition from a cool hallway to a living space.
Related article:
The use of IR heaters for various rooms. Heating area of devices. Almak heaters.
High-performance devices of more than 2500 m³/hour of the RT series are designed for openings with a height of 3.5-7 m. Such thermal curtains are installed on gates to a workshop, auto repair shop, warehouse or production room, at the entrance to a supermarket or entertainment center.
Helpful advice! For a wide doorway, you can install several medium-power thermal curtains, which are arranged in a row.
How to choose a thermal curtain
For the right choice For a thermal curtain, it is not enough to decide on its installation location and the operating principle of the heat exchanger. You should pay close attention to the characteristics of the device:
- curtain dimensions;
- device performance, which indicates the amount of air pumped per unit of time;
- air flow speed;
- heat exchanger type;
- power of the heat exchanger unit;
- device protection level;
- type of control;
- availability of additional options;
- appearance of the device.
Linear device parameters
The main parameter of the device is its length, which must completely cover the doorway in order to create the necessary air flow across its entire width. There should be no gaps here that allow the free penetration of cold and dusty air masses. The length of the devices is in the range of 600-2000 mm. For a standard size doorway, purchase a curtain 800 mm long.
Helpful advice! For the best effect, you should purchase a curtain that creates an air flow with a width slightly larger than the clearance of the doors.
If the width of the opening exceeds the length of the selected curtain model, it is better to install two units close to each other. When choosing a long model, you should consider important nuance. The length of the curtain turbine usually does not exceed 800 mm, which is associated with an increase in vibration phenomena as it increases, and in order to minimize them, additional costs are required, which will increase the cost of production.
In this regard, manufacturers resort to some cunning. An electric drive is located in the center of the device, to the right and left of which turbines of the required length are installed. However, this design has a significant drawback. An area of low pressure is created in the central part of the device, through which cold air from outside can freely penetrate.
Another important parameter is the length of the air stream, which should reach the floor at the rated power of the curtain. Here we're talking about not about the height of the doorway, but about the installation distance to the floor. If the air flow does not touch the floor, a gap will appear, which will make it possible free movement drafts
Performance and thermal power of the curtain
The effective operation of the device depends on the air flow density. The internal pressure in it must exceed the external one at any point in the opening. The speed of the flow should also be optimal and not create discomfort for people. Its minimum value for effective operation of the device must be at least 2.5 m/s. It depends on the diameter of the fan and its rotation speed.
The technical data sheet of each device indicates its performance. A correctly selected model should provide air supply, which only 1/3 of the air is dispersed downward, and the rest of its volume is returned to the room. If the device is selected with excessive capacity, then a significant part of the air will be carried out from the room to the outside, which indicates inappropriate use of the air curtain and unjustified energy consumption. If the curtain provides insufficient air flow, cold air masses will easily penetrate into the room, making the installation ineffective.
For a doorway with a standard size of 800x2000 mm, it is necessary to choose a curtain with a capacity of 700-900 m³/hour. However, manufacturers produce models with more modest parameters. When choosing a curtain, you should take into account the location of the entrance, temperature changes, wind direction and speed. All these characteristics are taken into account when calculating the thermal curtain. Therefore, for each specific model, manufacturers indicate in the passport all the necessary parameters and recommendations for the installation location of the device.
The thermal power of the curtain is not the determining indicator when choosing a curtain. After all, the main purpose of the installation is not to heat the room and maintain optimal temperature in him. The curtain should only compensate for part of the heat loss through the door. The device only helps the heating system function better, but should not replace it in any way. However, in practice, it is justified to install a 2 kW warm curtain as additional heating. Most models provide a temperature increase of up to 20°C. In some cases this value reaches 30°C.
Protection system and device management
For each heat curtain model there are two control levels. Using the first, the specified device performance is created and maintained. The second is responsible for the operation of the heat exchange unit. A specially designed protection system prevents the heater from turning on when the turbine is not working, which will protect the device from overheating.
In the most budget models, the heating level of the heating element is already set and the performance of the device is set, which cannot be changed. However, to independently regulate the indoor microclimate, it is better to choose curtains with the ability to manually control the device. There are also complex options where stepwise adjustment of the curtain is built-in, where several levels of turbine power and heat exchanger heating gradations are provided.
Electronically controlled models are very popular today, allowing for smooth and precise adjustment of the device. Typically the control unit is located on the device body. You can also buy a thermal curtain with a control panel or a remote unit that is located on the wall. The panel contains a number of buttons with which you can configure the effective operation of the air curtain: on/off, performance, heating mode, temperature, etc.
Each modern model equipped with an increased degree of protection against overheating, voltage surges, short circuits, phase breakdown to the housing and other protection options. There are also models that are equipped with a thermostat and timer. Newer versions provide for regulation of the air supply angle, which increases the efficiency of the air curtain.
Installation of a thermal curtain
Despite the fact that the complexity of installing the device is much simpler than for a household air conditioner, manufacturers insist that the installation of the air curtain be entrusted to a professional. However, you can do the work yourself.
Before proceeding with the installation of a thermal curtain, you should provide a power line of the required power, a device connection point, protective and safety elements (RCD and automatic circuit breaker). Next, precise markings should be made, after which the mounting parts are secured to the wall plane for further hanging of the thermal curtain above the door. The device kit usually includes a mounting plate or brackets and fasteners.
If the selected curtain model has adjustable ones, they must be tilted from the vertical at an angle of 30 degrees. towards the entrance. The design of the air nozzle of many models already has such an air flow slope. It may also be necessary to install a signal cable and mount the remote control panel to the wall. All these steps are described in detail in the device installation instructions, which you should read before installing the air curtain.
Installation of a horizontal or vertical water heat curtain is a more complex undertaking that requires certain thermal calculations and installation of additional pumping or collector equipment. To carry out installation, you should involve specialists in this matter.
Repair of thermal curtains
Only a qualified specialist can assess the extent of damage to the curtain and the possibility of repairing it. He will easily replace the failed part with a new one and perform further adjustments to the device.
The most common cause of air curtain failure is overheating of the device, which occurs due to non-compliance with the instructions in the instructions. The curtain turns on at full power, as a result, the fan, heating element, relay break down, the switch fails and the electrical contacts suffer. Most often, curtains with a device length of more than 80 cm, which are equipped with very complex components, fail.
Specialist service center Can fix minor problems on site. However, if more complex repairs are required, the equipment is dismantled for some time. You can also try to fix the problem yourself by studying the instructions in detail before doing so.
All work must be performed in compliance with safety regulations. If the device does not turn on, first make sure there is electricity. Then check the contacts and fuses. You can replace faulty elements yourself by following the instructions.
Important! All work on the device is performed while it is completely disconnected from the network.
If the device switch is in the “Heat” position, but the function is not performed, the switch may be faulty, or there may be poor contact in the electrical circuit. In the first case, the element is replaced with a new one. In the second option, you should check the correct connection and restore contact.
If the thermal curtain periodically turns on and off, you should check that it is installed correctly and clean the inside of it from accumulated dust.
Important! The device will operate properly when all recommendations for its installation, maintenance and periodic cleaning are followed.
Scheduled maintenance of thermal curtains
To ensure effective and long work The thermal curtain must strictly follow the recommendations specified in the operating instructions of the device, which requires timely professional maintenance.
Every month it is necessary to carry out an external inspection of the device, check the fastenings, guards and structure of the unit. Current and voltage are checked for each phase. The operation of the heat curtain in all its modes and the control panel should be tested. The housing, front panel of the control unit, entrance louvres and air filters are cleaned.
Once a quarter, a qualified specialist tightens the threaded connections of the wires on the terminal boxes, cleans the contacts, and checks the operation of the fuses and tips. If faulty parts are identified, replace them with new ones. Diagnostics of curtains is also performed to identify and eliminate extraneous noise. Fan blades are being inspected.
Every six months, seasonal debugging of the device’s operating modes should be performed, which consists of de-preservation or preservation of the thermal curtain. At this time, pneumatic cleaning of the heat exchanger and other components is also carried out.
The heat exchanger should be cleaned annually using a special chemical composition. The degree of wear of the fan motor bearings is also determined.
Well-known manufacturers of electric thermal curtains over the door. Device price
Today the most popular manufacturers of thermal curtains are the following companies:
- Friko;
- Pyrox;
- Olefini;
- Termoscreens;
- Ballu;
- Teplomash;
- Tropic.
More than 70% of the entire product range belongs to the Swedish company Friko and the Norwegian company Pyrox. The products of these brands are the standard for other manufacturers. Companies produce a wide range of high-quality products, which begins with compact models for window openings and ends with large-sized industrial thermal curtains. The reliability of the devices is ensured by the use of high-quality heating elements as a heat exchanger, developed using special technology, which extends the service life of the entire installation.
Industrial electric heat curtains with a length of more than 1500 mm have a single turbine installed large diameter which guarantees a uniform and intense air flow. Both companies produce devices with distinctive energy-saving characteristics and silent performance. However, the products of European brands are very expensive. You can buy a 3 kW thermal curtain of small dimensions for an average of 50 thousand rubles. Products for standard size doorways start from 100 thousand rubles. The price of a large Friko thermal curtain reaches 800 thousand rubles.
Less expensive products are offered by the English brand Termoscreens. Despite the fact that the products have a lower power of 1.5 kW, thermal curtains are not inferior in reliability to Scandinavian manufacturers. The role of a heat exchanger in thermal curtains is performed by an electric coil. The air flow is created by small diameter turbines. The average price of small-sized air-thermal curtains is 7-10 thousand rubles. Products for wide openings will cost an average of 25-45 thousand rubles. The price of built-in models reaches 100 thousand rubles.
Vertical electric air curtains of semi-industrial type are offered by the Greek brand Olefini. The products are highly efficient, but they are quite noisy. That’s why they are often installed in production workshops. The curtains have low cost, which averages 50-75 thousand rubles.
Thermal curtains Ballu
The Chinese manufacturer Ballu has several factories in Russia. This allows the company to produce budget products aimed at the needs of Russian consumers. The company is constantly improving products, expanding the product range and reducing product costs. Ballu thermal curtains are characterized by high energy saving rates, which allows you to save resources without reducing the efficient operation of the device.
The manufacturer produces several series of devices. The S1 series includes a budget electric air curtain Ballu BHC CE 3. The device capacity is 300 m³/hour. It is installed above the entrance to a shopping center, cafe or office at a height of no more than 2.5 m. The heating element can operate at full or half power and without heating in the summer. The cost of the device is 4,300 rubles.
One more budget model The new generation is the thermal curtain Ballu BHC CE 3T. Compared to previous product this device has a thermostat, and its productivity reaches 400 m³/hour. The price of the curtain is 6,000 rubles.
The S2 series differs from the S1 in that the devices are equipped with a needle heating “stitch element”, a thermostat and a noise reduction system. The series begins with a small-sized thermal curtain BHC 3.000 SB with a capacity of 300 m³/hour. Can operate at full power of 3 kW and in economy mode at power of 1.5 kW. The price of the device is 4,000 rubles.
A more advanced small-sized air curtain Ballu BHC L06 S03 with a capacity of 350 m³/hour is equipped with a BRC-E electronic wired remote control with wide functionality. The price of the product is 4,500 thousand rubles.
Thermal curtain Ballu BHC L08 S05 with a capacity of 450 m³/hour is installed on a standard doorway. Operates at full power of 5 kW, and in economy mode of 2.5 kW. The cost of the device is 6,400 rubles. Another thermal curtain BHC 5.000 SB with a capacity of 400 m³/h is also designed for doors with a width of 800 mm. Its cost is 5,990 rubles.
The price of a large-sized thermal curtain Ballu BHC L10 S06 with a capacity of 1050 m³/hour and a power of 6 kW is 10,000 rubles.
The T series includes modernized devices with a heating element as a heater. The curtains are equipped with a thermostat and have low level noise and vibration. The length of the air stream reaches 3 m. One of the most popular models in this series is the Ballu BHC L08 T 03 thermal curtain with a capacity of 600 m³/hour and a power of 3 kW. The price of the device is 5,700 rubles.
Thermal curtains Tropic
One of the most popular domestic manufacturers of thermal curtains is the Tropic company. It produces a wide range of semi-industrial and household devices, curtains for doorways and gates of various sizes, which differ in size, performance, type of coolant, type of heating element and installation location. The company's products are characterized by high reliability and low cost of production.
All thermal curtains of this brand are united in a series. The smallest and cheapest are the thermal curtains of the “K” series, which are used for doorways up to 2 m high. Their productivity is in the range of 150-350 m³/hour. Thanks to its mini-size, the device can be used not only as a thermal curtain, but also as a fan heater or heater with a “warm floor” function. You can buy an electric thermal curtain for 3,200 rubles.
The “A” series includes lightweight, compact, low-noise and inexpensive devices that are located horizontally above a doorway up to 2.2 m high. The curtains are equipped with a “stitch element”, an ultra-light impeller made of aluminum alloy, which reduces the time it takes for the device to reach operating mode , reducing vibration and noise. The most popular and budget model from this series is the Tropic A 3 thermal curtain with a capacity of 270 m³/hour. The installation price is only 3,700 rubles.
The “M” series contains small-sized curtains that have an aesthetic appearance and advanced technical characteristics. They can be installed for doorways up to 2.3 m high vertically and horizontally. The role of the heat exchanger here is played by the “stitch element”, which ensures reliable, silent and efficient operation of the device. The curtains have high performance, convenient adjustment and increased functionality. The kit includes a remote control with a built-in thermostat.
The smallest model in this series is the Tropic M 3 thermal curtain with a capacity of 450 m³/hour. The price of the device is 5,900 rubles. For standard-sized doorways, the Tropic M 6 thermal curtain with a capacity of 900 m³/hour is suitable.
The “T” series includes medium-sized air curtains with a power of 3-12 kW. They are installed above the entrance doors of shops, warehouses, cafes, vestibules to a height of no more than 2.5 m. The heat exchanger is a finned heating element. The operation of the device is controlled by a built-in thermostat. The price of a thermal curtain with a minimum capacity for this series of 1100 m³/hour is 10,600 rubles. The maximum productivity of the T series device is 4200 m³/hour. You can buy a silent thermal curtain over the door for 30,000 rubles.
Air thermal curtains Teplomash
An equally popular manufacturer of thermal curtains is the Russian company Teplomash. It produces a wide range of products quality equipment with an electric or water heat source, which is clearly presented in the catalog. The price of Teplomash thermal curtains depends on the size, performance, installation location of the device and heat source. All models are united in a series with numerical designation. The higher this number, the more powerful the product. Recommendations for installing and operating the device are described in detail in the instructions. “Thermal curtain Teplomash” individually for each model.
Low-power and medium-power KEV thermal curtains are assembled in the 100, 200 and 300 series. The productivity of the devices is in the range of 300-2800 m3/hour. They are installed in retail premises and office vestibules. The price of a small-sized 2 kW thermal curtain with a capacity of 300 m³/hour is 2,500 rubles. A device with maximum performance will cost 35,000 rubles. For comparison, the price of a Teplomash water thermal curtain with a capacity of 2800 m³/hour will be at least 41,000 rubles.
Industrial devices are more powerful and have high performance. These include models from series 400 to 1000. They are installed in workshops and warehouses. The price of a thermal curtain for an entrance door up to 4.5 m high will average 30 thousand rubles. The cost of a powerful model with maximum performance will be at least 110 thousand rubles.
For rooms with increased design requirements, you should choose thermal curtains from the 600 series. The devices are installed in offices, administrative premises, cafes, restaurants, and hotels with sophisticated interior design. You can buy a Teplomash thermal curtain from this series for an average of 55,000 rubles.
Only a correctly selected and installed thermal curtain in accordance with all the rules will be able to work effectively and fulfill its purpose. And the plan is Maintenance will help extend the life of the device.
Less than half a century has passed since the demand for heat exchange equipment in the form of an improved thermal curtain of 1904 became widespread in Europe. Today, you can feel the warm breath of thermal curtains when entering the opening doors of large airports, train stations and offices.
Let's be honest, skepticism towards innovative technologies breeds mistrust. Not many people yet decide to purchase and install such heat exchange units. We will help you discover the thermal curtain.
To the barrier!
Modern heat exchange equipment is securely installed in apartments and houses. System units of various purposes supply ventilation supply rooms with cold and heated air. A thermal curtain is considered a promising and highly efficient unit, creating a temperature barrier from heated air flows flowing from one room to another.
Explaining the meaning of a thermal curtain and what it is, let us tell you that the principle of its operation is based on blocking the cross-section of a passage or opening of a room with a powerful heat flow. According to experts, the advisability of installing a jet curtain is preferable for constantly opening doors with a large flow of passage.
If you intend to buy a thermal curtain, it would not hurt to find out the design and operational capabilities of the units, as well as the requirements for organizing thermal protection.
Thermal curtain reviews
Alexander Lvovich, entrepreneur
The office of our company is located near the metro station. We are always crowded with suppliers, managers and staff. The doors don't close, so it's cold in the office in winter. It is not rational to install additional heating equipment. We consulted and bought a thermal curtain from Teplomash. The ease of installation and connection is captivating. Two specialists did everything in almost an hour. Naturally, taking into account the requirements for creating thermal barriers.
Requirements for the organization of protective thermal barriers
The thermal curtain is classified as heating and climatological equipment, the organization of which is regulated by:
- SNiP 41-01-2003 “Heating, ventilation and air conditioning”, section 7.7.
- SNiP 23-01-99* “Construction climatology”.
To organize jet protection of a thermal curtain on the front door and select the parameters of power, air flow and installation angle, it is recommended to take into account:
- height and width of the opening
- settlement temperature regime indoor and outdoor air
- location of existing windows, supply ventilation, aeration lights
- degree of balance of the air mixture.
In addition, the choice of unit is influenced by the power of the thermal curtain, which determines the level of heat transfer performance.
Useful tips
The purchase of expensive heat exchange equipment must be justified. The justification criteria are: the intended purpose of the curtain, productivity and self-sufficiency of the acquisition. A hint is the classification and characteristics of the units: curtains with a flow capacity of 300 m3/h will provide a thermal barrier for the window, units with a capacity of up to 1000 m3/h will provide a thermal barrier for the doorway.
Electric thermal curtains operating from 380 V have high performance. The weight of industrial curtains in a bent steel body is more impressive compared to household models of units.
Curtain equipment design
Structurally, the thermal curtain consists of elements participating in the heat exchange process:
- ergonomic steel body with polymer coating
- electric heater for heat source
- high-performance fan heater
- air filter
- air duct with uniform heat distribution through the outlet nozzle.
The types of thermal curtains produced by industry are structurally designed for various spatial installations and installation of units for industrial and domestic purposes.
types, classification and characteristics
Air curtains are distinguished by heating element (water and electric), performance and installation method.
The heating functions of mixing-type (domestic) and damper-type (industrial) curtains are performed by:
- electrical units - heating element and spiral
- water - hot water.
To make it easier to read the parameters and characteristics of curtain units, standard markings are used for series 100-600, where the barrier effect of the unit corresponds to the power of the curtain.
For example, the tropical thermal curtain is represented by compact series markings T, K, A, M for installation in doorways up to 3 m with maximum power and performance.
Useful tips
Water curtains can be used all year round. However, installing a thermal water curtain will require mixing unit, providing water pressure and temperature, as well as a pipeline to the central heating system. Judging by the reviews, the thermal curtain is water, differing high cost, difficult for manual installation. By the way, you should not select a curtain for heating; it has completely different functions.
How to select a unit is shown in the video.
Methods for installing thermal curtains
Depending on the product range, the installation methods of the units involve horizontal and vertical installation schemes.
The horizontal installation method is the most popular. The curtain is installed above the doorway, taking into account the width working area unit exceeding the width of the door.
It is advisable to use a vertical air thermal curtain for narrow openings with a height of more than 3 m; installation is carried out on one or two sides of the opening, taking into account minimum distance from the wall 200-300 mm.
The unit is installed close to the opening with inside premises. The layout of garage or hangar curtains is made depending on overall dimensions opening.
We install an electric thermal curtain with our own hands
Installation of an electric thermal curtain consists of the following stages: installation of the unit on site on brackets or frame structures (hangers and strips) and connection according to the attached diagram.
Any unit industrial production equipped on the rear panel of the case with mounting holes in the form of a keyhole for fastening.
installation technology
On the working surface we transfer the markings of the location of the grooves of the rear panel, mark and drill places for fasteners, taking into account the interaxal distance.
We install mounting brackets, brackets, consoles or combs into the drilled holes with installation increments of up to 0.5 m.
We secure the mounting element using anchors or bolts.
To prevent self-loosening of fasteners, it is recommended to use electrogalvanized spring steel toothed washers and engravers.
We hang the prepared heat exchange unit or install it on a fastening element.
We tighten the fasteners.
Tighten the mounting screws using torque wrenches.
Useful tips
The curtain units have a considerable weight. If we add that vibration occurs during their operation, then a simple standard fastening is not enough.
Possible mounting options include:
- standard M10 bolts (main holes)
- safety brackets for horizontal installation
- threaded rods and hangers for ceiling mounting
- connection kits for joining end connections
- damper pads to dampen vibration loads.
connecting the unit
The condition for connecting the air curtain unit is a dedicated power supply line and a cable cross-section corresponding to the load.
For example, to connect a single-phase heat curtain kev 4P121E to a three-phase 380 V network to terminals A, B, C, N and ground, a five-core cable is used.
Any connection diagram ensures safe operation of the equipment, therefore a necessary condition is the grounding of the housing and power elements of the circuit.
Useful information on installation and connection of the air curtain is shown here.
The purpose of a thermal curtain is to protect a room with an open entrance from the penetration of cold air from the street.
It can serve rooms in which the doorway does not exceed a height of 3.5 m.
What should you pay attention to before installing thermal curtains?
Installation Methods
Installation can be done using two methods: vertical and horizontal installation. When installing thermal curtains, the following nuances must be taken into account:
- The quality of equipment operation can be significantly affected by reduced pressure inside the room. Make sure the building has a balanced ventilation system;
- for maximum effect it is necessary to mount air curtains as close to the opening as possible. In this case, the width of the air flow should be equal to the width (height) of the doorway;
- Basically, the equipment is located on the inside of the opening. Thermal curtains installed with outside, are intended only to protect freezer doors;
- The direction and speed of the air flow need to be adjusted. In particular difficult cases the air flow should be directed at an angle of 5-10 degrees in the direction of the street;
- The power of the thermal curtain varies: low power - 2-6 kW, medium power - 9-18 kW, high power - 20-100 kW.
Necessary tools
To install the equipment you will need the following set of tools:
- perforator;
- consoles;
- mounting brackets;
- plumb line or level;
- M10 bolts;
- anchor bolts;
- screwdriver;
- nuts, screws.
Thermal curtain installation sequence
In most cases, thermal curtains are installed directly above the open opening. The quality of its work depends on how competently the heat curtain is connected. Therefore, try to adhere to the following algorithm:
- Mark and drill holes to attach the mounting brackets. The length of the center distance should be 600 mm. Install the mounting brackets on the wall in the lower or upper position, adhering to the minimum distances and restrictions (Drawing A).
Move the curtain to the side so that the mounting screws fit into the grooves of the installation mounting brackets. Then tighten the screws tightly (Drawing B).
- If you decide to attach the curtain on a suspension, the installation brackets must be unfolded as shown in drawing C.
- If you decide to install a thermal curtain on beams and ceilings, make threaded holes in the top panel. (When installing on a false ceiling, it is necessary to make sure that the air flow is sufficient and the operation of the ventilation system will not interfere with the normal operation of the air curtain).
- Pay special attention to air flow. The air curtain must be mounted in such a way as not to create obstacles to the incoming and outgoing air flows.
When installing thermal curtains, carefully read the manufacturer's instructions. Most thermal curtains allow only horizontal installation with the discharge area located at the bottom. Above the big ones doorways Several devices are installed close to each other.
Special types of installation of thermal curtains
When installing a thermal curtain on a wall or beam, it is suspended on three screws, which are screwed directly into the mounting points. All curtains have corresponding keyhole-shaped holes on the back side.
When installing thermal curtains, it is convenient to use a French screwdriver for wood. In this case, it is necessary to use safety brackets, which must be installed in the lower or upper area of the curtain and fixed to the wall.
It is also possible to install thermal curtains with screws to a wall or beam. For this purpose, six holes with M6 threads are provided on the rear wall of the thermal curtain. When installing thermal curtains above the gates, the devices must be mounted back to back to avoid a gap between the air flows. The minimum installation gap between the curtains is 50 mm.
Connecting a thermal curtain
The curtain is supplied with a flexible cable and a plug that is grounded. Fixed connection (without using a plug) must be made through a central switch with an air gap of more than 3 mm.
The connection of the heat curtain must be carried out by a qualified electrician and must comply with the relevant standards.
To install the air curtain, wires of type SO5VV-U or similar are used. The top panel of the curtain has two knockouts with a diameter of 29mm and four with a diameter of 23mm. At the cable entry into the curtain, sealing rings are used, which must meet the protection class of the device.
If the thermal curtain is installed correctly, it will create comfort in the room for a long time.