Solar air conditioning system and air conditioner

Abstract

The present invention discloses a solar air-conditioning system and an air conditioner, which include a solar energy collection part, a hot water supply part and a heat exchange part. The heat exchange part includes an adsorption part and a water storage part. The solar energy collection part is used for collecting solar energy and heating the heating water in the hot water supply part. The hot water supply part is used for heating the adsorption part. Liquid water is arranged in the water storage part. An evaporation pipeline system and a condensation pipeline system are arranged between the adsorption part and the water storage part. This solar air-conditioning system is a water-based working medium air-conditioning system directly driven by solar energy. Water not only has a very high heat of vaporization (dozens of times that of traditional air-conditioning refrigerants), but also can easily achieve the phase transition at normal temperature. There are no any environmental problems. It is an ideal heat transfer medium. Using water as the refrigerant will not cause any pollution to the environment, nor will it cause damage to the ozone layer. It is a very environmentally friendly air-conditioning system.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, in particular to a solar air conditioning system and an air conditioner. Background Art

[0002] The principle of an air conditioner for adjusting the air temperature in a working space is usually to transfer the heat of the air in a relatively enclosed space by periodically changing the phase state of the refrigerant, so as to achieve the effect of changing its temperature. For example, a traditional air conditioner compresses the refrigerant through a compressor to do work to change its phase from gaseous to liquid. At this time, the refrigerant releases heat to the environment, and this process is called condensation. When these liquid refrigerants flow into the evaporator chamber through a capillary tube and evaporate into gas again, the refrigerant needs to absorb heat when vaporizing. At this time, part of the heat of the air in contact with the evaporator is absorbed and the temperature decreases. It can be seen that the temperature adjustment function of a traditional air conditioner is realized by the work of the compressor on the refrigerant. Therefore, it consumes a considerable amount of electric energy. At the same time, the refrigerant substances used in traditional air conditioners often damage the ozone layer of the atmospheric environment and bring public hazards. Another type of absorption refrigeration air conditioner (also known as a direct-fired air conditioner) uses lithium bromide and water as a binary working medium. Although it will not damage the ozone layer, it needs to burn fuel to generate high temperature to dehydrate the lithium bromide, and the emissions generated by combustion bring new environmental problems. The above are the technical problems faced by traditional air conditioners. Summary of the Invention

[0003] In view of this, one of the purposes of the present invention is to provide a solar air conditioning system and an air conditioner that can solve the problems of environmental pollution and environmental damage.

[0004] To achieve the above purpose, on the one hand, the present invention adopts the following technical solutions:

[0005] A solar air conditioning system includes a solar energy collection part, a hot water supply part and a heat exchange part. The heat exchange part includes an adsorption part and a water storage part. The solar energy collection part is used to collect solar energy and heat the heating water in the hot water supply part. The hot water supply part is used to heat the adsorption part. There is liquid water in the water storage part. An evaporation pipeline system and a condensation pipeline system are arranged between the adsorption part and the water storage part. The adsorption part, the water storage part and the evaporation pipeline system constitute a cooling system. The adsorption part, the water storage part and the condensation pipeline system constitute a recovery system. The heat exchange part has a cooling state and a recovery state.

[0006] In the cooling state, the cooling system works, the liquid water in the water storage part is converted into water vapor and absorbed by the adsorption part, achieving the effect of cooling.

[0007] In the recovery state, the recovery system operates. Through the heating of the hot water supply unit, the adsorption unit discharges water vapor, which is then converted into liquid water and stored in the water storage unit to supplement the liquid water in the water storage unit.

[0008] Preferably, the hot water supply unit includes a water heating unit, a heat-insulating pipeline, and a high-temperature water jacket. The high-temperature water jacket is communicated with the water heating unit through the heat-insulating pipeline, and the high-temperature water jacket is configured as a bell-shaped structure.

[0009] In the recovery state, the high-temperature water jacket covers the outside of the adsorption unit for heating the adsorption unit.

[0010] In the cooling state, the high-temperature water jacket is separated from the adsorption unit, and the adsorption unit absorbs water vapor.

[0011] Preferably, the solar air-conditioning system includes a transmission unit for driving the movement of the high-temperature water jacket.

[0012] Preferably, an evaporation unit is provided on the evaporation pipeline system for evaporating the liquid water in the heat exchange unit; and / or,

[0013] A condensation unit is provided on the condensation pipeline system for condensing the water vapor in the heat exchange unit.

[0014] Preferably, the solar energy collection unit includes a concave mirror with a parabolic structure, and the water heating unit is arranged at the focal position of the concave mirror. The water for heating is heated by the concave mirror reflecting sunlight.

[0015] Preferably, the solar energy collection system further includes a photovoltaic module located at the edge of the concave mirror. The photovoltaic module includes a power generation module and a tracking module. The power generation module is used to convert solar energy into electrical energy, and the tracking module is used to track the position of the sun and adjust the position of the concave mirror. The tracking module determines the position of the sun according to the output voltage of the power generation module.

[0016] Preferably, the solar air-conditioning system further includes an energy storage unit for storing the electrical energy generated by the photovoltaic module and providing electrical energy for the transmission unit.

[0017] Preferably, the heat exchange unit includes a first selection valve and a second selection valve. The first selection valve is used to control the connection and disconnection between the adsorption unit and the evaporation pipeline system and the condensation pipeline system, and the second selection valve is used to control the connection between the water storage unit and the evaporation pipeline system and the condensation pipeline system.

[0018] In the cooling state, the first selection valve connects the adsorption part to the evaporation pipeline system, and the second selection valve connects the water storage part to the evaporation pipeline system;

[0019] In the recovery state, the first selection valve connects the adsorption part to the condensation pipeline system, and the second selection valve connects the water storage part to the condensation pipeline system.

[0020] Preferably, the number of the heat exchange parts is at least two. At the same moment, some of the heat exchange parts are in the cooling state and some are in the recovery state.

[0021] On the other hand, the present invention adopts the following technical solutions:

[0022] An air conditioner, which includes the solar air-conditioning system as described above.

[0023] A solar air-conditioning system and an air conditioner provided by the present invention. The solar air-conditioning system is a water-based working medium air-conditioning system directly driven by solar energy. Water not only has a very high heat of vaporization (dozens of times that of traditional air-conditioning refrigerants), but also can easily achieve the phase conversion at normal temperature. There are no environmental problems, and it is an ideal heat transfer medium. Using water as the refrigerant will not cause any pollution to the environment, nor will it damage the ozone layer. It is a very environmentally friendly air-conditioning system. Description of the Drawings

[0024] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become clearer. In the drawings:

[0025] Figure 1 A schematic diagram of the solar air-conditioning system showing the specific embodiments provided by the present invention;

[0026] Figure 2 A schematic diagram of the heat exchange subsystem showing the specific embodiments provided by the present invention.

[0027] In the figure,

[0028] 1. Solar energy collection device; 2. Hot water supply device; 21. Water heating device; 22. High-temperature water jacket; 23. Heat-insulating pipeline; 24. Heat-insulating water tank; 3. Transmission device; 31. Transmission gear; 4. Heat exchange device; 41. Adsorber; 42. Water container; 43. Pipeline; 44. Evaporator; 45. Condenser; 46. Selective valve; 5. Fan. Detailed Embodiments

[0029] The present invention will be described based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail.

[0030] In addition, those of ordinary skill in the art should understand that the accompanying drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0031] Unless the context clearly requires otherwise, the words such as "including", "comprising" and the like in the whole specification and claims should be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is, the meaning of "including but not limited to".

[0032] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] Reference Figure 1 and 2 As shown, the present application proposes to protect a solar air-conditioning system, including a solar energy collection part, a hot water supply part and a heat exchange part. The heat exchange part includes an adsorption part and a water storage part. The solar energy collection part is used to collect solar energy and heat the heating water in the hot water supply part. The hot water supply part is used to heat the adsorption part. There is liquid water in the water storage part. An evaporation pipeline system and a condensation pipeline system are arranged between the adsorption part and the water storage part. The adsorption part, the water storage part and the evaporation pipeline system form a cooling system. The adsorption part, the water storage part and the condensation pipeline system form a recovery system. The heat exchange part has a cooling state and a recovery state. In the cooling state, the cooling system works, and the liquid water in the water storage part is converted into water vapor and absorbed by the adsorption part to achieve the cooling effect. In the recovery state, the recovery system works, and the adsorption part discharges water vapor and is converted into liquid water through the heating of the hot water supply part and stored in the water storage part to supplement the liquid water in the water storage part.

[0034] For the existing compression-type air-conditioning system, a compressor needs to be used to promote the phase conversion of the refrigerant, which will consume a large amount of electric energy. On the other hand, since most of the refrigerants used will damage the ozone layer and have public hazards; for the existing direct-fired air-conditioning system, fuel needs to be burned to dehydrate the absorbent, and energy needs to be consumed to generate carbon emissions. To solve the above problems, the solar air-conditioning system of the present application adopts a technical route different from that of traditional air conditioners, and the energy demand is provided by solar energy, which can not only significantly save energy but also avoid harm to the environment. Specifically, reference Figure 1 and 2As shown, the solar air-conditioning system is a water-based air-conditioning system directly driven by solar energy. Water not only has a very high heat of vaporization (dozens of times that of traditional air-conditioning refrigerants), but also can easily achieve the phase transition at normal temperature, without any environmental problems, and is an ideal heat transfer medium. Preferably, the solar air-conditioning system uses a desiccant with strong hygroscopic ability and water as the heat transfer working medium. A certain amount of desiccant and water are respectively placed in a closed container, that is, the desiccant is placed in the adsorber 41 to form the above-mentioned adsorption part, and the liquid water is placed in the water container 42 to form the above-mentioned water storage part. The water storage part and the adsorption part are connected through an evaporation pipeline system and a condensation pipeline system. In this closed atmosphere, the water vapor is quickly absorbed by the desiccant, resulting in the rapid volatilization and gasification of the water in the water container 42. The gasification of water absorbs a large amount of heat from the environment, thus producing a refrigeration effect. In order to maintain the continuity of the system operation, solar thermal energy is used to generate hot water, and the hot water is used to heat the desiccant after water absorption to dehydrate it. After the desiccant resumes its adsorption capacity, the next cycle can be carried out.

[0035] The following will be described in conjunction with specific embodiments. The present application also proposes an air conditioner having the above solar air-conditioning system. Refer to Figure 1 and 2 As shown, the air conditioner of the present invention is composed of a solar energy collection device 1 placed outdoors (such as on the roof), an energy storage device (not shown in the figure), a transmission device 3, a control device (not shown in the figure), and a heat exchange device 4 placed indoors. For the convenience of subsequent description, the subsystem composed of the adsorber 41, the evaporator 44, and the pipelines 43 and the selection valves 46 between them will be simply referred to as the heat exchange subsystem (detailed introduction follows). Generally, in order to achieve an ideal refrigeration effect, a heat exchange system (heat exchange device 4) is usually composed of multiple heat exchange subsystems as described above. Refer to Figure 1As shown in the figure, it is a heat exchange system composed of two heat exchange subsystems A and B. The solar energy collection device 1 includes a concave mirror (not shown in the figure) for converging sunlight and a photovoltaic module (not shown in the figure). The photovoltaic module includes a solar cell module for photovoltaic conversion, and, in order to efficiently utilize solar energy, a solar tracking subsystem (not shown in the figure) for aligning the concave mirror with the sun. At the focus where the sunlight converges, there is a water heating device 21 for generating hot water. The water heating device 21 is connected to the high-temperature water jacket 22 through an adiabatic pipeline 23. A water pump is installed between the pipelines 43 to ensure that the water in the high-temperature water jacket 22 is circulated and heated by the water heating device 21. The high-temperature water jacket 22 is a container with an approximate bell-shaped structure and is coated with heat insulation materials to ensure the temperature of the hot water in the high-temperature water jacket 22. There is an openable and closable thermal coupling window below it. The high-temperature water jacket 22 can move up and down through a transmission device 3. The water heating device 21 also stores the generated hot water in a heat-insulated water tank 24 to provide hot water for other application occasions and facilitate users; the electric energy generated by the photovoltaic module is transmitted to an energy storage device (not shown in the figure) for storage to provide the electric energy required for air conditioning; the transmission device 3 is used to move the high-temperature water jacket 22 to cooperate with the positions of the heat exchange subsystem (heat exchange part) in different states; the control device is used to control the action of the selection valve 46, the operation of the fan 5 (not shown in the figure) and other aspects of control; the heat exchange device 4 is composed of two heat exchange subsystems A and B. Each heat exchange subsystem is respectively composed of an adsorber 41, an evaporator 44, a condenser 45, pipelines 43, valves and a heat exchange working medium, etc.; the adsorber 41 is a heat-transferable container with interfaces and contains a certain amount of renewable desiccant (such desiccant has a strong adsorption effect on water molecules and can be regenerated by heating to dehydrate). The evaporator 44 is a container with a heat dissipation device and two interfaces, where liquid water absorbs heat and turns into water vapor. The condenser 45 is a container with a heat dissipation device and two interfaces, where water vapor releases heat and condenses into liquid water. The water container 42 is a water-containing container with interfaces and contains a certain amount of water;A selector valve 46 (first selector valve) is connected to the interface of the adsorber 41 and is communicated with one ends of an evaporator 44 and a condenser 45 respectively through a pipeline 43. A selector valve 46 (second selector valve) is connected to the interface of a water container 42 and is communicated with the other ends of the evaporator 44 and the condenser 45 respectively through the pipeline 43. In this way, each heat exchange subsystem forms a closed space, and a binary working medium composed of water and a desiccant undergoes a phase change cycle inside to transfer heat. The steps are as follows: 1) When the desiccant in the adsorber 41 is in a dry state, the selector valves 46 on the sides of the adsorber 41 and the water container 42 close the condenser 45 channel and open the evaporator 44 channel. At this time, the water vapor in the closed space composed of the adsorber 41, the evaporator 44, the water container 42 and the pipeline 43 will be quickly adsorbed by the desiccant, resulting in a sharp decrease in the water vapor partial pressure, thereby causing a large amount of liquid water in the water container 42 to evaporate and gasify. When the water gasifies, it will take away a large amount of heat from the surrounding environment of the evaporator 44. This is the refrigeration process (at this time, the heat exchange part is in a cooling state); 2) When the desiccant is saturated with adsorbed water vapor, the selector valves 46 on the sides of the adsorber 41 and the water container 42 simultaneously close the evaporator 44 channel and open the condenser 45 channel. The driving gear 31 drives the high-temperature water jacket 22 to move downward to cover the adsorber 41 and heat it. When the desiccant in the adsorber 41 is heated to above the dehydration temperature, a large amount of water molecules adsorbed by the desiccant molecules are released and enter the condensation channel to reach the condenser 45, where they release heat and condense into liquid water and flow back into the water container 42. This is the condensation process (at this time, the heat exchange part is in a recovery state); 3) After the desiccant is dehydrated, the driving gear 31 rotates in reverse to lift the high-temperature water jacket 22 away from the adsorber 41, and the heat coupling window of the water jacket is closed at the same time. The valve is selected to the evaporator 44 channel, and the refrigeration cycle is entered again.; Figure 1 The shown is a heat exchange system composed of two heat exchange subsystems A and B.

[0036] Reference Figure 1 and 2As shown, subsystem A and subsystem B are placed in parallel, and the desiccants of A and B alternately enter the adsorption and dehydration processes, which can ensure the continuity of the refrigeration process. At a certain moment, the adsorber 41 of the heat exchange subsystem A is heated by the high-temperature water jacket 22, and the desiccant inside is in the dehydration state. The water molecules removed enter the condenser 45 through the condensation channel and are condensed into liquid water and return to the water container 42 of A. At this time, A is in the dehydration and condensation state (i.e., the recovery state). At the same time, the adsorber 41 of the heat exchange subsystem B is separated from the high-temperature water jacket 22, and the selector valve selects and connects the evaporator 44 channel. B is in the adsorption refrigeration state (i.e., the cooling state); after a period of time, the dehydration of subsystem A tends to end, and the adsorption of subsystem B tends to be saturated. At this time, the selector valves 46 of A and B are switched in the reverse direction, and the transmission gear 31 rotates in the reverse direction, so that the adsorber 41 of A is separated from the high-temperature water jacket 22, and the adsorber 41 of B is covered by the high-temperature water jacket 22. Then, subsystem A and B will enter the adsorption refrigeration state and the dehydration and condensation state respectively; as described above, the subsystems A and B of the heat exchange system alternately enter the adsorption refrigeration and dehydration and condensation states, so that the air-conditioning system continuously functions. The evaporator 44 side is the refrigeration side facing the indoor, and the condenser 45 side is the condensation side facing the outdoor. To make the refrigeration effect of the air-conditioning system more ideal, it is preferably to set a fan 5 on the refrigeration side and the condensation side respectively, so that the air in the working space can be circulated and refrigerated, and the heat released by the condenser 45 can be quickly blown away. This system can be used as a part of the building energy-saving system to provide air-conditioning function and hot water function for families, and has significant energy-saving and emission-reduction effects.

[0037] Preferably, referring to Figure 1 and 2 As shown, the heat for heating the adsorber 41 is obtained by concentrating sunlight to heat the heating water in the water heating device 21. The device for concentrating sunlight is preferably a concave mirror with a parabolic structure, which can reflect and concentrate sunlight through its focus; a group or multiple groups of photovoltaic modules are arranged at the edge of the concave mirror. In this embodiment, it is a group of photovoltaic modules for photovoltaic power generation and signal detection of tracking the sun. The photovoltaic power generation is used to charge the energy storage battery in the system and provide electrical energy for the transmission device 3; the photovoltaic module includes a sun tracking device that automatically tracks the sun's azimuth. By adjusting the azimuth angle of the concave mirror, when the photovoltaic cell obtains the maximum voltage output, it indicates that the sun has been tracked, so as to ensure that both the water heating device 21 and the solar cell module can obtain the maximum solar radiation. Preferably, the water heater is placed at the focus of the concave mirror, and the water inside is heated to a higher temperature (higher than the dehydration temperature of the desiccant) by the concentrated sunlight and then transmitted to the high-temperature water jacket 22 for storage; the high-temperature water jacket 22 is a container with an approximate bell shape and is covered with heat-insulating materials. There is an openable and closable thermal coupling window below it, and the high-temperature water jacket 22 can be moved up and down through the transmission device 3 so as to cover and disconnect from the adsorber 41.

[0038] The above-mentioned solar air-conditioning system and air conditioner have at least the following advantages: Using water as the refrigerant will not cause any pollution to the environment, nor will it damage the ozone layer. It is a very environmentally friendly air-conditioning system. It uses desiccants to promote water phase change refrigeration and drives heat exchange through solar thermal + photovoltaic, making the cost of the air conditioner low. Since the heat of vaporization of water is much higher than that of the refrigerant in traditional air conditioners, the rotation speed of the heat exchange system is lower, and the power consumption is far lower than that of traditional air conditioners. It can operate without consuming mains electricity and has a huge energy-saving advantage. This solar air-conditioning system can achieve combined heat and power supply, providing refrigeration function for families while also providing hot water and power supply. The applicability of this solar air-conditioning system is not restricted by power infrastructure and can contribute to energy conservation and emission reduction as an important part of building energy conservation.

[0039] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0040] It should be understood that the above-mentioned embodiments are merely exemplary and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions made by those skilled in the art to the above details will be included within the scope of the claims of the present invention.

Claims

1. A solar air-conditioning system, characterized in that, It includes a solar energy collection part, a hot water supply part and a heat exchange part. The heat exchange part includes an adsorption part and a water storage part. The solar energy collection part is used to collect solar energy and heat the heating water in the hot water supply part. The hot water supply part is used to heat the adsorption part. There is liquid water in the water storage part. An evaporation pipeline system and a condensation pipeline system are arranged between the adsorption part and the water storage part. The adsorption part, the water storage part and the evaporation pipeline system form a cooling system. The adsorption part, the water storage part and the condensation pipeline system form a recovery system. The heat exchange part has a cooling state and a recovery state. In the cooling state, the cooling system works. The liquid water in the water storage part is converted into water vapor and absorbed by the adsorption part to achieve the cooling effect. In the recovery state, the recovery system works. The adsorption part discharges water vapor and is converted into liquid water by the heating of the hot water supply part and stored in the water storage part to supplement the liquid water in the water storage part. The hot water supply part includes a water heating part, an adiabatic pipeline and a high-temperature water jacket. The high-temperature water jacket is communicated with the water heating part through the adiabatic pipeline. The high-temperature water jacket is configured as a bell-shaped structure. In the recovery state, the high-temperature water jacket covers the outside of the adsorption part to heat the adsorption part. In the cooling state, the high-temperature water jacket is in a separated state from the adsorption part, and the adsorption part absorbs water vapor. Among them, this solar air-conditioning system uses a type of desiccant with strong hygroscopic ability and water as heat transfer working media. The desiccant is placed in the adsorber to form the above-mentioned adsorption part, and the liquid water is placed in the water container to form the above-mentioned water storage part. The heat exchange part includes a first selection valve and a second selection valve. The first selection valve is used to control the connection and disconnection between the adsorption part and the evaporation pipeline system and the condensation pipeline system. The second selection valve is used to control the connection between the water storage part and the evaporation pipeline system and the condensation pipeline system.

2. The solar air-conditioning system according to claim 1, characterized in that, The solar air-conditioning system includes a transmission part, and the transmission part is used to drive the movement of the high-temperature water jacket.

3. The solar air-conditioning system according to claim 1, wherein an evaporation part is arranged on the evaporation pipeline system for evaporating the liquid water in the heat exchange part; and / or a condensation part is arranged on the condensation pipeline system for condensing the water vapor in the heat exchange part.

4. The solar air-conditioning system according to claim 2, wherein The solar energy collection part includes a concave mirror with a parabolic structure. The water heating part is arranged at the focal position of the concave mirror, and the heating water in the water heating part is heated by the sunlight reflected by the concave mirror.

5. The solar air-conditioning system according to claim 4, characterized in that, The solar air-conditioning system further includes a photovoltaic module located at the edge of the concave mirror. The photovoltaic module includes a power generation module and a tracking module. The power generation module is used to convert solar energy into electric energy. The tracking module is used to track the position of the sun and adjust the position of the concave mirror. The tracking module judges the position of the sun according to the output voltage of the power generation module.

6. The solar air-conditioning system according to claim 5, wherein, The solar air-conditioning system further includes an energy storage part, and the energy storage part is used to store the electric energy generated by the photovoltaic module and provide electric energy for the transmission part.

7. The solar air-conditioning system according to claim 1, wherein In the cooling state, the first selection valve connects the adsorption part to the evaporation pipeline system, and the second selection valve connects the water storage part to the evaporation pipeline system; In the recovery state, the first selection valve connects the adsorption part to the condensation pipeline system, and the second selection valve connects the water storage part to the condensation pipeline system.

8. The solar air-conditioning system according to any one of claims 1-7, characterized in that, The number of the heat exchange parts is at least two. At the same moment, some of the heat exchange parts are in the cooling state, and some of the heat exchange parts are in the recovery state.

9. An air conditioner, characterized in that, The air conditioner includes the solar air conditioning system as described in any one of claims 1-8.

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