The use of solar energy for air conditioning is an attractive idea not only for southern regions, where cooling costs determine the heat costs for maintaining comfortable indoor conditions, but also for air conditioning in public buildings in middle and even northern regions. The use of solar energy for air conditioning is attractive both because the solar energy schedule coincides with the cooling schedule and because adding solar cooling to heating can significantly improve the economics of solar heating.
Known methods of using solar energy for cooling can be divided into three classes: solar absorption cooling, solar-mechanical systems and relatively solar systems that are not powered by the sun, but use some components of solar systems for cooling. Within each class of systems, one could distinguish its own subclasses when different refrigerants, different temperature levels, etc. are used. therefore, different solar collectors, different control systems.
Absorption conditioning, based on the absorption of refrigerants by solutions of absorbents or adsorbents, can be carried out using solar energy if it is sufficient to carry out the main stage of the process of regeneration of the working substance. These can be closed cycles, for example with solutions of lithium bromide in water or solutions of ammonia in water, or open cycles in which water is the refrigerant combined with the atmosphere. Let us briefly look at some absorption solar coolers based on the use of an aqueous solution of lithium bromide, a solution of ammonia in water, and dehumidifying air conditioning. Today, absorption air conditioning using energy from solar collectors and storage systems is the simplest approach to using solar energy for air conditioning (Fig. 2.11). The essence of this system or its variations is that the generator of absorption refrigerators is provided with heat from the collector-accumulator system.
Most of the units used are lithium bromide machines with a water-cooled absorber and condenser. Maintaining temperatures in the generator within the limits determined by the characteristics of the flat-plate collector) is a decisive factor that determines, among others, such parameters as the efficiency of heat exchangers and cooler temperature.
Rice. 2.11. / - solar collector; 2 - battery tank; 5 - additional energy source; 4 - capacitor; 5 - evaporator; b- absorber; 7 - heat exchanger; 8 - generator; 9 - three position tap
Typically, the solar conditioning process uses a water-cooled absorber and condenser, necessitating a cooling tower.
The pressure differences between the lines of the highest and lowest levels in the IlVg-N20 system are very limited, so these systems can use steam-air pumps and gravitational return of the solution from the absorber to the generator. Therefore, there is no need for mechanical pumps of solution from the low to high pressure line.
Many machines show fairly stable values of efficiency, which is the ratio of cooling capacity to energy supplied to the generator, as a function of the change in generator temperature from the operating level provided by the minimum corresponding conditions. The efficiency of lithium bromide refrigerators is in the range of 0.6 ... 0.8. If water is used as a coolant, temperatures in the generator can range from 348 to 368 K. Temperature changes in the generator, provided by solar energy, lead to changes in the performance of the refrigerator. The temperature of the heating fluid must be higher than the temperature in the generator. Here lies some incompatibility between the need to increase the temperature level and the upper limit of the water temperature in the storage tank of the solar water heater system, which is not designed for high pressure. In addition, the temperature of 373 K is the limit for many solar collectors and, in addition, there is a need for cooling towers.
Early experiments to create lithium bromide refrigerators used industrial absorption machines without any modifications to take into account the use of solar energy. Later, refrigerators began to change by reconstructing the generator. Special experiments on the use of high-performance solar installations to provide comfortable conditions for a school in Atlanta were conducted by the Westinghouse Electric Corporation. A study of the technical and economic indicators of such systems showed that in the southern regions the combined use and cooling is more economically profitable than separate heating and cooling. Further research was aimed at simplifying the system and facilitating its operation.
The ammonia-water refrigerator system is similar to the one shown in Fig. 2.11, except that the distillation sections must be connected to the top of the generator to capture water vapor coming from the evaporator to the condenser. The main processes in the solution are similar to the processes occurring in the LiBr-H2O system, however, the pressure and pressure drop in the system are much higher. To pump the solution from the absorber to the generator, mechanical pumps are needed. In many cases, in the tested installations, the condenser and absorber are cooled by air, while the temperature in the generator is in the range of 398 ... 443 K. The condensing temperature for air-cooled air conditioners corresponds to higher temperatures in the generator than the corresponding parameters for a liquid-cooled system.
There are quite advanced installations that operate using solar energy with ammonia-water systems. The temperatures that need to be created in commercial refrigerator generators are too high for modern flat-plate collectors, so focusing collectors are needed and there is a need for both low-cost collectors of this type and solar tracking systems. Work on water-ammonia solar installations is a continuation of research into cycles that use solutions with a high concentration of 1h * NZ and are aimed at reducing temperatures in generators. When creating solar refrigerators, two paths were outlined: the first - direct copying of still existing refrigeration machines, including absorption ones, replacing only the energy source that ensures the operation of the generator, the second - the reconstruction of the generator made it possible to reduce the temperature level that ensures its operation and thereby increase solar energy utilization rate.
The Institute of Technical Thermophysics of the National Academy of Sciences of Ukraine proposed to regenerate water-salt solutions of absorption refrigeration units by evaporating water from them into the environment, that is, to make separate type units. In this case, the heated solution is brought into contact with atmospheric air in a contact mass transfer apparatus, and evaporation occurs due to the supply of heat from an external source. The lost refrigerant is filled with tap water. The magnitude of the losses is approximately equivalent to the water loss when removing condensation heat in a cooling tower. The use of this method of regeneration (air desorption) makes it possible to reduce the temperature of the solution during regeneration by 12 ... 14 K, and accordingly increases the efficiency of the helionic generator (solar collector with single-layer glazing and a neutral absorber) by 30%.
Further improvement of installations with air desorption was proposed to combine the processes of heating the solution by solar rays and restoring its concentration. In this case, the solution flows in a thin film over a blackened surface (for example, on the roof of a house), washed by outside air. In this case, reducing the regeneration temperature simplifies and, therefore, reduces the cost of solar heaters and the entire system as a whole. For devices such as absorbent, an aqueous solution of lithium chloride is usually chosen. Unlike a solution of lithium bromide, its use makes it possible to obtain cold water with a temperature below 283 ... 285 K. It has a number of advantages: lower specific gravity and working concentration, reduced corrosiveness, chemical stability (in the process of air desorption upon contact with air in lithium bromide solution may form lithium carbonate).
The basic technological diagram of an absorption refrigeration solar installation is shown in Fig. 2.12. This installation is designed to cool a three-story residential building. A shed roof is used as a solution regenerator, oriented to the south, its inclination angle to the horizon is about 5 °, area 180 m2.
Rice. 2.12. / - absorbent regenerator; 2 - filter; WITH - heat exchanger; 4 - Vacuum pump; 5,6- absorber - evaporator; 7-air conditioning; 8 - water addition device; 9 - conditioning water pump; 10- pump for pumping refrigerant (water); 11 - line receiver; 12- absorbent solution pump; 13 - cooling tower; 14 - cooling water pump
The installation consists of a solution generator / filter 2, heat exchanger 3, absorber-evaporator 5-6 with linear receiver //, drainage tank, regulator floats, water addition device to the evaporator 8, vacuum pump 4, pumps for solution, for refrigerant (water), for cooling water, for conditioning water, as well as shut-off and control valves, etc.
The installation operates as follows: conditioned water is cooled in the heat exchange pipes of the evaporator 6, the steam surface of which is irrigated with water boiling under vacuum - the refrigerant. The water vapor generated is absorbed in the absorber 5 a solution of lithium chloride, which is then diluted. The absorption heat is removed by recycled water coming from the cooling tower. Air and other gases that do not condense are removed from the evaporator unit by a vacuum pump 4. To restore the concentration, a weak solution is supplied to the solar regenerator / through heat exchanger 5, where it is preheated. The strong solution after regeneration is drained through a funnel and sent for absorption. It is pre-cooled in a heat exchanger WITH, giving off heat to the oncoming flow of a weak solution and water from the cooling tower. After this, a weak solution is supplied to irrigate the cooled tubes of the air cooler. The vapor-gas mixture is removed from the absorber-evaporator block, before entering the vacuum pump, it washes these tubes and is enriched with air.
The solution enters the system from the regenerator and is cleaned of contaminants in a gravity filter 2. In addition, the circuit provides fine filters for removing suspended particles, corrosion products, etc. The roof surface is specially equipped as a regenerator.
The installation of a transparent screen over the surface of the regenerator, although it makes it more expensive, protects the solution from contamination, eliminates the solution being carried away and allows it to be heated to a higher temperature (without worsening the regeneration conditions). In this installation, the roof of the house, irrigated with a solution, is covered with single-layer glazing, forming a slot channel with the roof for the passage of air. At the entrance to the channel, the air is purified in filters and, moving against the movement of the film, it is moistened by absorbing water that evaporates from the solution.
After regeneration, the solution, which has a temperature of about 338 K, is cooled in a heat exchanger with tap water, which is then used for hot water supply. Previously this water; is heated in a specially dedicated section of the absorber cooler. ^ In this case, the consumption of cooling water and, accordingly, heat loss to the environment is reduced. The roof has a fairly significant slope, so that the air movement is carried out due to the difference in the specific gravities of the heating and outside air.
In an open regenerator, a certain amount of air also enters the absorbent, which negatively affects the absorption process and causes increased corrosion of the devices, so the cold, strong solution after the heat exchanger enters the deaerator, from which gases that have not condensed are constantly removed by a small pump. The deaerator is connected to the absorber. After deaeration, the strong solution is mixed with the weak one and sent to irrigate the heat exchange pipes of the absorber.
The regenerator is coated with hydrophilic materials and ensures the formation of a thin continuous film of flowing absorbent. Even on materials that are well wetted, the minimum irrigation area is 80 ... 100 kg / l.m., which necessitates recirculation of the solution in the regenerator, which is carried out by a special pump.
During rain, the installation does not work; the solution enters the absorber. The first portions of rainwater, containing a lot of lithium chloride, are collected in a tank with a capacity of 4 m3; the rest of the water is sent to the sewer.
A large-capacity heat or cold accumulator is used, designed for approximately 2 hours.
Another class of absorption air conditioners uses a combination of heat exchangers, evaporative coolers, and dehumidifiers. These systems take air either outside or from a room, dry it and then cool it by evaporation. Heat exchangers are used as energy storage devices.
The basic idea of drying-cooling cycles can be illustrated using the example of an “environmental control system” (Fig. 2.13 A). The most convenient way to visualize the processes occurring in the system is to depict in a Psychrometric diagram the changes in the state of the air passing through the system.
Rice. 2. 13. A - solar system diagram; b- solar system in Psychrometric chart for ideal conditions; / - Fan; // - Rotary heat exchanger; /// - Rotary heat exchanger; IV- rotary heat exchanger; V- humidifier
The system in the described case uses 100% outside air. A modification of this system, the so-called recirculation version, recirculates the conditioned exhaust air from the room through the system.
In Psychrometric chart processing air (Fig. 2.13 6) outside air, which is the parameters of point /, passes through a rotary heat exchanger, after which it has a higher temperature and lower humidity - point 2. Cooling of the air passing through the rotary heat exchanger is carried out in accordance with the point 3. It then enters an evaporative heat exchanger (refrigerator) and is cooled to 4. Air enters the house, the thermal load of which is determined by the difference in the states of the point 4 and dots 5. The air leaves the house in state and enters the evaporative cooler and is cooled to state 6. Under ideal conditions, the temperature is in state would will be the same as in the state and. The air enters the rotary heat exchanger and is heated to state 7, which under ideal conditions will correspond to the state temperature 2.
Additionally, in this case, solar energy is used to heat the air from state 7 to point state 8. Air with point parameters 8 enters the rotary heat exchanger and is cooled to the state of point 9, while the moisture content increases.
This is a diagram of an ideal process, in which in evaporative refrigerators the process follows the saturation line and the efficiency of heat and mass transfer is the same. The process of heat and mass transfer in a rotary heat exchanger is quite complex. In domestic air conditioning practice, the method of air drying using salt-water solutions of lithium chloride and calcium chloride includes such processes. The air is treated in a chamber with a nozzle with concentrated solutions of these salts. As a result of the absorption of water vapor, it is dried, and the solution becomes less concentrated and weak. For reuse, a weak solution must be restored to a given concentration by evaporation - regeneration of the solution. For these purposes, boilers are used, after which the solution must be cooled.
The diagram of the drying-humidifying installation is shown in Fig. 2.14. It consists of a chamber with a solution / and water 2 s fan 8, heat exchanger WITH, cooling towers 4 with fan 10 containers for solution 5 and water 6, solar regenerator 7, heat exchanger 8 with water tank 15 solution pumps 11 and for water 12.
Rice. 2.14. 1,2 chambers in accordance with the solution and water; 3,8 - heat exchangers; 4 - cooling tower and 5, b - containers for solution and water; 7 - solar regenerator; 9,10 - fans; //, 12 - pumps; 13, 14, 16,17- fans; 15 - container for collecting hot water 18 - glazed part of the regenerator
The installation works as follows. The processed supply air passes through the chambers in succession 1-2, enters the refrigerated room. In the chamber / due to the transfer of sensible and latent heat to the air solution, its temperature decreases and with adiabatic humidification in the chamber 2 its temperature drops to 288 ... 293 K at a relative humidity of 85 - 90%. Mixing with the internal air, the supply air acquires an average temperature for the room of 297 ... 298 K, while its relative humidity decreases to 50 - 60%. Due to the heat received from the air, the temperature of the solution in the chamber / increases to 303 ... 308 K, and its concentration decreases and the solution enters container 5, from where it is driven through the heat exchanger using a pump 3 and back to the camera /. Another small part is supplied by the same pump to the solar regenerator 7. Before entering the chamber / solution in the heat exchanger WITH cooled by water, which in turn transfers the heat received from the solution to the surrounding space by processing it in a cooling tower 4. Part of the solution after regeneration and heating enters the container 5 with a solution of increased concentration.
Heated in a tank 15 water can be used for domestic needs. Combining devices for various purposes in one installation increases its energy efficiency.
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Tips for saving energy on air conditioners: According to China National Energy Efficiency Management Method, EER refers to the ratio of cooling capacity and power consumption, which is the only data used to evaluate energy-saving air conditioners, the more it saves energy. If there are two ACs with the same power consumption, the one with more power is better in terms of energy savings.
Performance characteristics
High efficiency, energy saving, convenient and money saving, exceeding the national first class energy standard.
Robust and durable, smooth running.Low loaded compressor operation to extend its life.
Healthy and comfortable, constant temperature and disease management from air conditioning.
It is not a frequency conversion air conditioner, but is superior to it because the conversion type begins to save energy when the room temperature reaches a set value, and the hybrid solar air conditioner operates in an optimal state immediately after starting and achieves the sanme effects of traditional air conditioners with less power consumption.
Super luxurious look will decorate your home.Indoor panel adopts aluminum alloy and metal drawing color board to make your home more sparkling.
Automatic opening and closing of dust-free air outlet.
Easy to install, just like traditional air conditioner.
With strong adaptability, Chuanglan hybrid solar air conditioner can operate at very low and high temperatures from -7℃ to 53℃.
Exceeding national standards and applicable to all types of environment.
High performance Japanese brand compressors
Robust and durable, smooth running. Low load compressor operation extends its duration.
Four fold heat exchanger
As one of the main components of the air conditioner, Chuanglan hybrid solar air conditioner adopts four times the heat exchanger (take Supreme Quiet as an example), the heat exchanger effective area increases 20-40% larger than V-shaped and flat heat exchangers, thus cooling and heating the effect has improved significantly.
High quality inner tube copper thread
Compared with ordinary copper pipes, the heat exchange area of internally threaded copper pipes is significantly increased in the same exchange effect. At the same time, it can resist glaze and increase the original ability at low temperature.
Hydrophilic aluminum foil to prevent water from appearing in the bridge, so as to ensure heat transfer efficiency.
There are several types of air conditioners that use solar energy in one way or another to reduce or completely eliminate the consumption of electricity from the grid. The operating principle of such devices, called “solar air conditioners,” will be discussed in this article.
Despite some absurdity of the concept of “solar air conditioner” (traditionally the sun is associated with heat, and air conditioning with cold), it is quite understandable, because it is on a sunny day that the need for air conditioning is greatest. Thus, it would be very logical to link the operation of the air conditioner to the sun: if there is sun, there is a need for cooling, if not, there is no need for cold.
Solar air conditioners with desiccant
Typically, about 30% of the useful cooling capacity of an air conditioner (and in some cases up to 50%) is wasted on the formation of condensation, which is then simply drained down the drain.
To avoid the appearance of condensation, which occurs due to the fact that the evaporator temperature is lower than the dew point of the air coming from the room, you can either increase the evaporator temperature or lower the dew point. The first method leads to less efficient air cooling and therefore requires an increase in air flow. In addition, excess moisture from the air still needs to be removed.
The second method - lowering the dew point of the air in the room - can be implemented in several ways, and one of them is to pre-dry the air supplied to the air conditioner.
Solar air conditioners with desiccants (desiccant) are active solar air conditioners and have increased energy efficiency due to the absence of condensation. Moisture is removed from the air stream by desiccant agents before the evaporator. Thus, a dried air mass with a dew point below the evaporator temperature enters the evaporator, which guarantees that no condensation will occur.
The desiccant (this could be, for example, silica gel) rotates on the disk. Having absorbed moisture from the internal air, the desiccant is carried with a disk into a space open to the rays of the sun, where the absorbed moisture evaporates. The desiccant is thereby regenerated and the disc returns it to contact with the internal air.
Additionally, we note that with the scheme described above, on sunny days, the air dehumidification mode does not require turning on the vapor-compression refrigeration cycle of the air conditioner, which leads to significant energy savings: electricity is spent only on rotating the disk with the desiccant.
Another example of active solar chillers are absorption chillers that utilize solar heat. As is known, in absorption machines the working substance is a solution of two, sometimes three components. The most common binary solutions of an absorber (absorbent) and a refrigerant meet two main requirements: high solubility of the refrigerant in the absorbent and a significantly higher boiling point of the absorbent compared to the refrigerant.
To obtain cold in absorption refrigeration machines, thermal energy is required (as a rule, waste heat from enterprises is used), which is supplied to a generator, where practically pure refrigerant boils away from the working substance, because its boiling point is much lower than that of the absorbent.
Despite the fact that absorption chillers are a very promising area of development of refrigeration technology, their use is limited, as a rule, to industrial facilities, since only there there is a sufficient amount of waste heat.
At the same time, in absorption solar air conditioners, the thermal energy supplied to the generator is obtained from the Sun. This allows us to expand the scope of application of absorption machines and use them not only in the industrial sector. Considering that the thermal energy received from the Sun is free, the cost-effectiveness of such solutions in operation is obvious.
Photovoltaic solar air conditioner
The operating principle of photovoltaic solar air conditioners involves perhaps the most obvious use of solar energy: powering the air conditioner from a solar battery.
Indeed, solar power plants using a renewable energy source - the energy of the Sun - have been known for quite a long time, and a lot has been said about them. A number of projects have already been implemented and are being successfully operated in various countries.
On a more modest scale, solar panels are used to supply energy to small objects, for example, cottages: from photovoltaic panels installed, as a rule, on the roof, they receive electricity, which is spent on household needs.
Even less often, it is proposed to power various equipment from solar panels. If we consider that, unlike other household appliances, air conditioners are used specifically on sunny days, then it would be logical to connect the air conditioner to the solar battery.Similar solutions are already offered by many foreign manufacturers of air conditioning equipment, for example, Sanyo, Mitsubishi, LG. However, it is obvious that the air conditioner, being an energy-intensive equipment, will require the placement of a fairly large number of photovoltaic panels. Therefore, different manufacturers use solar panels in different ways: to power only fans, to partially power an air conditioner, or to completely supply it with electricity.
In any case, a power cable from the electrical network is supplied to the air conditioner, but priority in terms of energy source is given to solar panels. For example, direct current is used to power solar air conditioners from GREE and MIDEA. In normal operation, the current comes from the photovoltaic panels, and in the absence of sun, through a rectifier from the building's electrical network.
However, we note that the efficiency of modern photovoltaic panels does not exceed 25%, which cannot be called efficient energy conversion. Even with the development of crystalline silicon-based combined batteries, the efficiency of which reaches 43%, more than half of the energy is still lost during the conversion process. This is why it is believed that photovoltaic solar air conditioners are inferior in efficiency to, for example, absorption ones.
Eco-friendliness as a driver for solar air conditioning
Today, much attention is paid to the environmental friendliness of certain solutions. The environmental issue is particularly acute in the field of air conditioning.
Solar climate systems are still not widespread. However, the focus of global efforts to reduce carbon dioxide emissions into the atmosphere and rising prices for traditional energy resources can be a good incentive for the development of solar climate technology.
It is obvious that the energy consumption of the air conditioning system with parallel use of solar energy will decrease. In addition, the use of thermal energy from the Sun can expand the scope of application of absorption refrigeration machines operating on safe working fluids - water or saline solutions.
Yuri Khomutsky, technical editor of the magazine “CLIMATE WORLD”
Every year, as summer approaches, the load on electrical networks increases. The summer heat is poorly tolerated not only by people, but also by equipment. Electronics begin to malfunction, fans turn on more and more often, refrigerators work almost continuously, windows open wide, drafts occur. And although this does not help much, a slight breeze in the room creates the appearance of a more comfortable temperature, making the heat easier to bear. During this period, the demand for various microclimate units increases sharply - outdoor and floor air conditioners, fans with an air cooling system.
To ensure a comfortable temperature in the apartment, one medium-power air conditioner is enough. In office premises with large areas and volumes of rooms, several air conditioners are installed for each room. Naturally, the installation of a large number of these devices entails a significant increase in the load on the electrical network. And an apartment air conditioner, which operates almost around the clock, puts quite a load on the network. In addition, with its power of 2500 watts, electricity costs increase significantly.
In addition to stationary air conditioners, there are also those that are installed in cars, caravans, and boats. During operation, these air conditioners take part of the engine power or consume battery energy. To reduce the load on electrical networks during peak periods, to prevent premature battery discharge, but at the same time to ensure comfortable temperature conditions, many companies have begun to produce solar-powered air conditioners. In such devices, helium panels either form an integral part of a non-demountable structure, or are installed separately, connecting to the air conditioner with a special power cable.
Evaporative air conditioners
The operating principle of evaporative air conditioners is extremely simple. The design includes an open container filled with water. An air filter consisting of several layers of porous gaskets is installed vertically. Water from the container is supplied by a small pump to a spray device installed above the air filter. From the spray device, water, divided into small drops, enters the air filter, through which warm air is supplied by a fan. This air, passing through the filter gaskets, takes with it droplets of water, which very quickly, almost instantly, evaporate, since their surface area and volume are extremely small. At the same time, the air passing through the filter is not only cooled, but also humidified.
The advantages of such an air conditioner include its low cost, ease of operation, low energy consumption, air purification and humidification. The disadvantages include the need to periodically replenish water supplies, which will be spent on moistening the filter gaskets. The disadvantage of the device is also that it is ineffective in conditions of high humidity.
Evaporative air conditioner diagram
Evaporative air conditioner Diablo Solar
Mountain Concepts has released the Diablo Solar, a small solar-powered evaporative air conditioner. It is distinguished not only by its high performance, but also by its efficiency. The air conditioner is powered by gel panels that provide a supply voltage of 24 volts DC. The presence of a battery allows you to use the device even in the dark. Despite its small size and power, this air conditioner ensures the creation of a comfortable microclimate in rooms up to 30 square meters. Its maximum productivity reaches 3000 cubic meters of air per hour.
Diablo Solar with solar battery pack
The device is equipped with a remote control system, an automatic air switch, and setting the operation and shutdown times. A well-balanced fan operates almost silently. The temperature of the moist cooled air can be 8°C - 12°C lower than the temperature of the air supplied from outside.
Basic technical data:
- Productivity – 3000 m³/hour;
- Adjustment – 3 steps;
- Tank capacity – 20 liters;
- Water consumption – 3 l/hour;
- Voltage – 24 V DC;
- Power – 80 watts;
- Room dimensions – 30 m²;
- Weight – 20 kg;
- Dimensions 560+350x690 mm
The delivery set includes: a 90-watt solar panel module, two 35 ampere-hour batteries, an inverter, a charge controller, a 3-meter cable, and connecting connectors.
The cost of the set is up to 25,000 rubles.
Compression type air conditioners
The operating principle of such air conditioners is exactly the same as that of refrigerators. And these air conditioners consist of the same elements - evaporator, condenser, compressor. Low-boiling freon is used as a refrigerant. Cooling of the air in the room depends on it. Like any other liquid, the boiling point of freon is directly dependent on pressure. The lower the pressure, the lower the boiling point.
Liquid freon boils in the evaporator, where the pressure is so low that vaporization occurs at a temperature from +10°C to +18°C. In this case, heat is removed from the incoming air. The heated vaporous freon enters the compressor. There the pressure is higher, and therefore the boiling point is higher. Here the freon vapor is condensed into liquid and returned to the evaporator. The cycle repeats endlessly.
Compression type air conditioner diagram
The fan blows warm air out. Inside the room, the air is forced through the evaporator, leaving the air conditioner already cooled to the set temperature.
Hybrid solar air conditioner SUNCHI ACDC 12
Jiangsu Sunchi New Energy Co., Ltd. produces a powerful hybrid air conditioner powered by solar batteries. This compression-type air conditioner is a universal device and can be used to create a comfortable microclimate in apartments, offices, and industrial premises. It can work both for cooling and heating air. The thermal power for cooling is 11,000 BTU/h, which, translated into our usual units of measurement, is approximately equal to a power of 3.2 kilowatts, while the thermal power for heating is 12,000 BTU/h or 3.5 kilowatts. This power is enough to serve a room of up to 75 square meters.
Solar air conditioner SUNCHI ACDC 12
The delivery set includes a split system, three solar panels with a power of 250 watts each, an inverter, a battery charge controller, a battery (at the buyer’s request), connecting cables, pipelines, and a remote control.
Main technical characteristics:
- Power supply – 220 volts 50 Hz;
- The power of one solar battery is 250 watts;
- DC voltage – 30 volts;
- Thermal power for cooling –11000 BTU/h (3.2 kW);
- Power in maximum cooling mode – 920 watts;
- Rated power in cooling mode – 705 watts;
- Thermal power for heating –12000 BTU/h (3.5 kW);
- Power in maximum heating mode – 1025 watts;
- Rated power in heating mode – 836 watts;
- Refrigerant – freon R410A;
- Dimensions of the indoor unit – 902x165x284 mm;
- Dimensions of the outdoor unit – 762x284x590 mm;
- Three-speed Panasonic engine – 1250/900/700 rpm;
- Cost – 65,000 rubles (without batteries).
In addition to stationary solar-powered air conditioners, various companies produce mobile devices. For example, for caravans.
Mobile home with solar panels
Solar panels installed on the roof provide energy for all electrical equipment, including air conditioning, which creates a pleasant atmosphere in the cabin without wasting energy from the batteries or the car's generator.