Novel solar heat pump system

Abstract

The utility model provides a novel solar heat pump system which comprises a solar heat collector, an energy storage water tank, a fresh air handling unit, a first circulation branch, a second circulation branch and a third circulation branch. The first circulation branch and the second circulation branch are connected in parallel, and the third circulation branch is arranged on the second circulation branch and used for conducting heat collected by the solar heat collector into the energy storage water tank. An evaporator is arranged on the third circulating branch and is used for providing enough heat when the sunlight intensity is low; the fresh air handling unit is connected with the energy storage water tank and used for conducting heat in the energy storage water tank to the fresh air handling unit for heating; heat is generated through the arranged evaporator 4 for heating, and the situation that the solar heat pump system cannot provide enough heat for heating in transition seasons, cloudy and rainy days, nights and other conditions with low illumination intensity or without sun illumination is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solar heat pump systems, in particular to a novel solar heat pump system. Background Art

[0002] In order to reduce the emission of greenhouse gases in buildings, renewable energy sources such as solar energy and wind energy are considered an effective solution. Heat pumps are also the main renewable energy technologies used in building applications. This technology is based on a refrigeration cycle and uses electricity as the only energy consumption to obtain energy from the surrounding environment such as air, ground, and water. Compared with other heating or cooling technologies, it can save electricity costs and reduce carbon dioxide emissions. In order to improve the utilization efficiency of renewable energy, existing research has attempted to combine solar technology with heat pump technology.

[0003] In terms of building heating, the application of solar heat pump systems has great potential. However, due to the problems of low energy density, non-uniformity, and intermittency of solar energy, solar heat pump systems face some challenges in actual operation; especially in transitional seasons, rainy weather, and at night when the light intensity is low or there is no sunlight, the solar heat pump system cannot provide enough heat for heating. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a novel solar heat pump system, which solves the above problems existing in the prior art.

[0005] According to an embodiment of the utility model, a novel solar heat pump system includes:

[0006] A solar collector, a storage water tank, a fresh air unit, a first circulation branch, a second circulation branch, and a third circulation branch. The solar collector is connected to the storage water tank through the first circulation branch and the second circulation branch respectively. The first circulation branch and the second circulation branch are in parallel. The third circulation branch is arranged on the second circulation branch. A water pump is arranged on the first circulation branch, and a compressor is arranged on the second circulation branch for conducting the heat collected by the solar collector to the storage water tank.

[0007] An evaporator is arranged on the third circulation branch for providing enough heat in case of low solar light intensity.

[0008] The fresh air unit is connected to the storage water tank for conducting the heat in the storage water tank to the fresh air unit for heating.

[0009] Preferably, the solar collector includes: a porous flat tube aluminum channel, a micro heat pipe, a flat water pipe, a connecting pipe, a photovoltaic cell module, and a heat preservation back plate. The photovoltaic cell module is arranged in parallel with the heat preservation back plate. A number of porous flat tube aluminum channels, a number of micro heat pipes, a flat water pipe, and a connecting pipe are all arranged between the photovoltaic cell module and the heat preservation back plate;

[0010] A number of porous flat tube aluminum channels are arranged in parallel with each other, and a number of porous flat tube aluminum channels are connected in series through a number of connecting pipes. Both ends of the series-connected porous flat tube aluminum channels are respectively connected to the second circulation branch;

[0011] A number of micro heat pipes are arranged in parallel with each other, and a number of micro heat pipes are arranged side by side and alternately spaced from a number of porous flat tube aluminum channels;

[0012] The flat water pipe is arranged perpendicular to a number of micro heat pipes. The flat water pipe is located at one end of the micro heat pipe, and both ends of the flat water pipe are connected to the first circulation branch.

[0013] Preferably, the first circulation branch further includes: a first stop valve;

[0014] The water outlet of the energy storage water tank, the first stop valve, the flat water pipe, the water pump, and the water inlet of the energy storage water tank are sequentially connected in series through water pipes.

[0015] Preferably, the second circulation branch further includes: a heat exchange pipe, a throttle valve, a second stop valve, and a third stop valve. The heat exchange pipe is arranged inside the energy storage water tank;

[0016] One end of the heat exchange pipe, the throttle valve, the third stop valve, the series-connected porous flat tube aluminum channels, the second stop valve, the compressor, and the other end of the heat exchange pipe are sequentially connected in series through water pipes.

[0017] Preferably, the third circulation branch further includes: a fourth stop valve and a fifth stop valve;

[0018] The outlet of the throttle valve, the fifth stop valve, the evaporator, the fourth stop valve, and the inlet of the compressor are sequentially connected in series through water pipes.

[0019] Preferably, the porous flat tube aluminum channel includes: a tube body, through holes, and micro grooves. A number of through holes are arranged side by side inside the tube body. The cross section of the through hole is rectangular, and a number of micro grooves are arranged on the inner wall of the through hole. The shape of the tube body is flat, and both ends of a number of through holes are respectively connected to different connecting pipes.

[0020] Preferably, a hot water branch is further provided on the energy storage water tank. The hot water branch includes: a sixth stop valve and a seventh stop valve. A water pipe is connected between the water inlet of the energy storage water tank and the water outlet of the sixth stop valve. The water inlet of the sixth stop valve is connected to an external water supply source;

[0021] The water inlet of the seventh stop valve is connected to the water outlet of the energy storage water tank through a water pipe.

[0022] Preferably, it further includes: a fresh air heat exchange pipe. The heat exchange fluid outlet end of the fresh air unit is connected to the inlet of the fresh air heat exchange pipe, and the heat exchange fluid inlet end of the fresh air unit is connected to the outlet of the fresh air heat exchange pipe. The fresh air heat exchange pipe is arranged in the energy storage water tank.

[0023] Preferably, the fresh air unit, the first stop valve, the second stop valve, the third stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the seventh stop valve, the throttle valve, the evaporator and the compressor are all electrically connected to the controller.

[0024] Preferably, the flat water pipe is located below several micro heat pipes.

[0025] Compared with the prior art, the utility model has the following beneficial effects: Heat is generated by the provided evaporator for heating, avoiding the situation that in the transitional season, rainy weather, night and other situations with low light intensity or no sunlight, the solar heat pump system cannot provide enough heat for heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the schematic diagram of the solar heat pump system of the embodiment of the utility model;

[0027] Figure 2 It is the structural schematic diagram of the solar collector of another embodiment of the utility model;

[0028] Figure 3 It is the structural schematic diagram of the porous flat aluminum channel of another embodiment of the utility model;

[0029] Figure 4 , It is the cross-sectional schematic diagram of the porous flat aluminum channel of another embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the utility model will be further described below with reference to the drawings and embodiments.

[0031] As Figures 1 to 4 shown, the embodiment of the utility model provides a new type of solar heat pump system, including:

[0032] A solar collector 1, an energy storage water tank 6, a fresh air unit 5, a first circulation branch, a second circulation branch and a third circulation branch. The solar collector 1 and the energy storage water tank 6 are respectively connected through the first circulation branch and the second circulation branch. The first circulation branch and the second circulation branch are in parallel. The third circulation branch is arranged on the second circulation branch. A water pump 23 is arranged on the first circulation branch, and a compressor 2 is arranged on the second circulation branch, which is used to conduct the heat collected by the solar collector 1 to the energy storage water tank 6;

[0033] An evaporator 4 is provided on the third circulation branch to provide sufficient heat on days with low solar irradiance intensity;

[0034] The fresh air unit 5 is connected to the energy storage water tank 6 to conduct the heat in the energy storage water tank 6 to the fresh air unit 5 for heating;

[0035] The working principle of the above technical solution: During actual use, when the solar irradiance intensity is high during the day, etc., the solar collector 1 conducts the collected solar heat to the energy storage water tank 6 through the first circulation branch and the second circulation branch respectively, so that the energy storage water tank can provide a heat source for the fresh air unit 5 at the end for heating to meet the heating demand of the building; while in the transitional season, rainy days, and at night when the solar irradiance intensity is low or there is no solar irradiance, the evaporator 4 on the third circulation branch is started, and the heat generated by the evaporator 4 is conducted to the energy storage water tank 6 through the second circulation branch and the third circulation branch for heating.

[0036] The beneficial effects of the above technical solution: By providing the evaporator 4 to generate heat for heating, it is avoided that in the transitional season, rainy days, and at night when the solar irradiance intensity is low or there is no solar irradiance, the solar heat pump system cannot provide sufficient heat for heating.

[0037] In one embodiment, the solar collector 1 includes: a porous flat tube aluminum channel 14, a micro heat pipe 15, a flat water pipe 16, a connecting pipe, a photovoltaic cell module 21, and a heat preservation back plate 22. The photovoltaic cell module 21 and the heat preservation back plate 22 are arranged in parallel. A plurality of porous flat tube aluminum channels 14, a plurality of micro heat pipes 15, a flat water pipe 16, and a connecting pipe are all arranged between the photovoltaic cell module 21 and the heat preservation back plate 22;

[0038] A plurality of porous flat tube aluminum channels 14 are arranged in parallel, and a plurality of porous flat tube aluminum channels 14 are connected in series through a plurality of connecting pipes. Both ends of the plurality of porous flat tube aluminum channels 14 after series connection are respectively connected to the second circulation branch;

[0039] A plurality of micro heat pipes 15 are arranged in parallel, and a plurality of micro heat pipes 15 and a plurality of porous flat tube aluminum channels 14 are arranged side by side and alternately at intervals;

[0040] The flat water pipe 16 is arranged perpendicular to a plurality of micro heat pipes 15. The flat water pipe 16 is located at one end of the micro heat pipe 15, and both ends of the flat water pipe 16 are connected to the first circulation branch;

[0041] The flat water pipe 16 is located below a plurality of micro heat pipes 15;

[0042] The porous flat-tube aluminum channel 14 includes: a tube body 24, through holes 20, and micro-grooves 19. A number of through holes 20 are arranged side by side in the tube body 24. The cross-section of the through holes 20 is rectangular. A number of micro-grooves 19 are provided on the inner walls of the through holes 20. The shape of the tube body 24 is flat. Both ends of the number of through holes 20 are respectively connected to different connecting tubes;

[0043] The working principle and beneficial effects of the above technical solution: When the solar heat pump system is operating, the refrigerant flowing in the porous flat aluminum channel 14 can absorb the heat of the photovoltaic cell module 21. The refrigerant that obtains the heat will be conducted to the energy storage water tank 6 through the second circulation branch; Among them, during operation, the refrigerant will enter a number of through holes 20 through the connecting tubes and converge in the next connecting tube after passing through the through holes 20; thereby increasing the contact area between the porous flat-tube aluminum channel 14 and the photovoltaic cell module 21; The porous flat-tube aluminum channel 14 is formed by extruding a number of holes made of aluminum alloy in parallel, and a number of capillary micro-groove 19 structures are arranged in the holes, which plays a role in strengthening heat transfer;

[0044] At the same time, the evaporation section of the micro heat pipe 15 can efficiently transfer the waste heat generated by the photovoltaic cell module 21 during power generation to the condensation section of the micro heat pipe 15, and release the heat to the flat water pipe 16. The heat is finally conducted to the energy storage water tank 6 through the first circulation branch in the flat water pipe; Among them, the solar collector 1 is placed obliquely. The micro heat pipe 15 is a flat tube with both ends closed and filled with a certain amount of liquid. That is, the condensation section of the micro heat pipe 15 is the section in contact with the flat water pipe 16, and the section not in contact is the evaporation section of the micro heat pipe 15; Adjacent micro heat pipes 15 are sequentially attached to the flat water pipe 16 through heat-conducting silica gel.

[0045] In one embodiment, the first circulation branch further includes: a first stop valve 11;

[0046] The water outlet of the energy storage water tank 6, the first stop valve 11, the flat water pipe 16, the water pump 23, and the water inlet of the energy storage water tank 6 are sequentially connected in series through water pipes;

[0047] The working principle and beneficial effects of the above technical solution: When the first circulation branch is turned on, that is, when the first stop valve 11 and the water pump 23 are started, the water pump 23 drives the water to flow out from the water outlet of the energy storage water tank 6, passes through the first stop valve 11, the flat water pipe 16, and the water pump 23 in sequence, and then returns to the energy storage water tank 6 from the water inlet of the energy storage water tank 6, thereby conducting the heat absorbed from the solar collector 1 back to the energy storage water tank 6.

[0048] In one embodiment, the second circulation branch further includes: a heat exchange tube 18, a throttle valve 3, a second stop valve 7, and a third stop valve 10. The heat exchange tube 18 is arranged in the energy storage water tank 6;

[0049] One end of the heat exchange tube 18, the throttle valve 3, the third stop valve 10, a plurality of porous flat tube aluminum channels 14 connected in series, the second stop valve 7, the compressor 2 and the other end of the heat exchange tube 18 are sequentially connected in series through a water pipe.

[0050] The working principle and beneficial effects of the above technical solution are as follows: when the third stop valve 10 and the second stop valve 7 are turned on, the refrigerant circulates in the throttle valve 3, the third stop valve 10, a plurality of porous flat tube aluminum channels 14 connected in series, the second stop valve 7, the compressor 2 and the heat exchange tube 18, thereby transferring the heat absorbed from the solar collector 1 back to the energy storage water tank 6.

[0051] In one embodiment, the third circulation branch further includes: a fourth stop valve 8 and a fifth stop valve 9;

[0052] The outlet of the throttle valve 3, the fifth stop valve 9, the evaporator 4, the fourth stop valve 8 and the inlet of the compressor 2 are sequentially connected in series through a water pipe.

[0053] The working principle and beneficial effects of the above technical solution: when the fifth stop valve 9 and the fourth stop valve 8 are turned on, the refrigerant can also flow through the fifth stop valve 9, the evaporator 4 and the fourth stop valve 8, thereby transferring the heat absorbed from the evaporator 4 back to the energy storage water tank 6.

[0054] In one embodiment, the energy storage water tank 6 is further provided with a hot water branch, which includes: a sixth stop valve 12 and a seventh stop valve 13, the water inlet of the energy storage water tank 6 and the water outlet of the sixth stop valve 12 are connected through a water pipe, and the water inlet of the sixth stop valve 12 is connected to an external water supply source;

[0055] The water inlet of the seventh stop valve 13 is connected to the water outlet of the energy storage water tank 6 through a water pipe;

[0056] The working principle and beneficial effects of the above technical solution: During actual use, the heated hot water in the energy storage tank 6 can be released through the seventh stop valve 13 to achieve hot water supply; at the same time, electricity is generated through the photovoltaic cell assembly 21 to achieve trigeneration of electricity, hot water and heating.

[0057] In one embodiment, it further comprises: a fresh air heat exchange pipe 17, the heat exchange fluid outlet of the fresh air unit 5 is connected to the inlet of the fresh air heat exchange pipe, the heat exchange fluid inlet of the fresh air unit 5 is connected to the outlet of the fresh air heat exchange pipe 17, and the fresh air heat exchange pipe 17 is arranged in the energy storage water tank 6;

[0058] The working principle and beneficial effects of the above technical solution are as follows: the heat exchange fluid of the fresh air unit 5 brings the heat in the energy storage water tank 6 back to the fresh air unit 5 through the fresh air heat exchange pipe 17, providing a heat source for the fresh air unit 5.

[0059] In one embodiment, the fresh air unit 5, the first stop valve 11, the second stop valve 7, the third stop valve 10, the fourth stop valve 8, the fifth stop valve 9, the sixth stop valve 12, the seventh stop valve 13, the throttle valve 3, the evaporator 4 and the compressor 2 are all electrically connected to the controller;

[0060] The working principle and beneficial effects of the above technical solution: the first stop valve 11, the second stop valve 7, the third stop valve 10, the fourth stop valve 8, the fifth stop valve 9, the sixth stop valve 12 and the seventh stop valve 13 are all electric stop valves, which are electrically connected to the controller to control their conduction or closing; the throttle valve 3 is an electric throttle valve; the controller is preferably a PLC.

[0061] Meanwhile, the operation method of the solar heat pump system includes:

[0062] When it is daytime in summer, the first circulation branch is conductive, and the other circulation branches are not conductive. At this time, the solar collector 1 works normally, and the water pump 23 and the first stop valve 11 of the main circuit are both in the open state. The solar collector 1 receives solar radiation, and the waste heat generated by photovoltaic power generation is absorbed by the energy storage tank 6 in a circulation heat manner, which reduces the working temperature of the photovoltaic cell assembly 21 and improves the power generation efficiency. The water temperature of the energy storage tank 6 also gradually increases to meet the demand for hot water.

[0063] When it is daytime in the transition season, the first circulation subsystem and the second circulation branch are both conducting, and the third circulation branch is not conducting. At this time, the solar collector 1, the compressor 2, and the throttle valve 3 are all in normal working condition, and the water pump 23, the first stop valve 11, the second stop valve 7, and the third stop valve 10 of the main circuit are opened, the fifth stop valve 9 and the fourth stop valve 8 of the third circulation branch are closed, and the evaporator 4 does not participate in the operation; the solar collector 1 receives solar radiation, and the waste heat generated by photovoltaic power generation is absorbed by the porous flat aluminum channel 14 and the working fluid in the micro heat pipe 15, wherein the porous flat aluminum channel The working fluid in the channel 14 absorbs heat and evaporates into superheated steam, then enters the compressor 2, is compressed into high-temperature and high-pressure superheated steam, and then releases heat in the heat exchange tube 18 in the energy storage water tank 6 to increase the temperature of the water in the energy storage water tank 6, and finally enters the throttle valve 3 for the next cycle; the evaporation section of the micro heat pipe 15 absorbs the waste heat of photovoltaic power generation, and transfers the heat longitudinally to the condensation section to exchange heat with the circulating water in the flat water pipe 16, and the heated water enters the energy storage water tank 6 through the circulating water pump to increase the temperature of the water in the energy storage water tank 6, and finally heats the user end through the terminal heating fresh air unit 5 connected in series with the energy storage water tank 6;

[0064] When it is daytime in winter, the second circulation branch is turned on, and the first and third circulation branches are turned off. At this time, the solar collector 1, the compressor 2, and the throttle valve 3 are all in normal working states, that is, the second stop valve 7 and the third stop valve 10 in the corresponding branch are opened, the water pump 23 and the fifth stop valve 11 are closed, the fifth stop valve 9 and the fourth stop valve 8 are closed, and the evaporator 4, the flat water pipe 16, and the micro heat pipe 15 do not participate in the operation. The refrigerant in the porous flat aluminum channel 14 is the only heat transfer medium in the system. The solar collector 1 receives solar radiation, and the waste heat generated by photovoltaic power generation is absorbed by the refrigerant in the porous flat aluminum channel 14. After absorbing heat, the refrigerant evaporates into superheated steam and enters the compressor 2 to be compressed into high-temperature and high-pressure superheated steam. Subsequently, it enters the energy storage water tank 6 to release heat by condensation. Finally, after throttling and depressurizing through the throttle valve 3, it enters the solar collector 1 again for the next cycle;

[0065] When it is cloudy or night, the third circulation branch is turned on and part of the first and second circulation branches are turned off. That is, when the solar collector 1 cannot work, the second stop valve 7, the third stop valve 10, and the first stop valve 11 are closed, and the second stop valve 9 and the third stop valve 8 are in a conducting state. The fan contained in the evaporator 4 starts to operate, inhales the heat in the outside air, and generates hot air with a certain speed after being heated by the electric heating wire. The hot air enters the air duct structure and exchanges heat between the hot air and the refrigerant at the evaporator 4. After being heated, the refrigerant is phase-changed into low-temperature and low-pressure superheated steam and then enters the compressor 4 to be compressed into high-temperature and high-pressure superheated steam. Subsequently, it releases heat by condensation in the energy storage water tank 6 to increase the temperature of the water tank. Finally, it supplies heat to the user end through the terminal heating fresh air unit 5 connected in series with the energy storage water tank 6.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A novel solar heat pump system, characterized in that, Including: A solar collector (1), a storage water tank (6), a fresh air unit (5), a first circulation branch, a second circulation branch, and a third circulation branch. The solar collector (1) is connected to the storage water tank (6) through the first circulation branch and the second circulation branch respectively. The first circulation branch and the second circulation branch are in parallel. The third circulation branch is arranged on the second circulation branch. A water pump (23) is arranged on the first circulation branch, and a compressor (2) is arranged on the second circulation branch for conducting the heat collected by the solar collector (1) into the storage water tank (6); An evaporator (4) is arranged on the third circulation branch for providing sufficient heat on days with low solar irradiance; The fresh air unit (5) is connected to the storage water tank (6) for conducting the heat in the storage water tank (6) to the fresh air unit (5) for heating.

2. A novel solar heat pump system according to claim 1, wherein The solar collector (1) includes: a porous flat tube aluminum channel (14), a micro heat pipe (15), a flat water pipe (16), a connecting pipe, a photovoltaic cell module (21), and a heat preservation back plate (22). The photovoltaic cell module (21) is arranged parallel to the heat preservation back plate (22). A plurality of porous flat tube aluminum channels (14), a plurality of micro heat pipes (15), the flat water pipe (16), and the connecting pipe are all arranged between the photovoltaic cell module (21) and the heat preservation back plate (22); A plurality of porous flat tube aluminum channels (14) are arranged in parallel, and a plurality of porous flat tube aluminum channels (14) are connected in series through a plurality of connecting pipes. Both ends of the series-connected plurality of porous flat tube aluminum channels (14) are respectively connected to the second circulation branch; A plurality of micro heat pipes (15) are arranged in parallel, and a plurality of micro heat pipes (15) are arranged side by side and alternately spaced from a plurality of porous flat tube aluminum channels (14); The flat water pipe (16) is arranged perpendicular to a plurality of micro heat pipes (15). The flat water pipe (16) is located at one end of the micro heat pipe (15). Both ends of the flat water pipe (16) are connected to the first circulation branch.

3. A novel solar heat pump system according to claim 2, wherein The first circulation branch further includes: a first stop valve (11); The water outlet of the storage water tank (6), the first stop valve (11), the flat water pipe (16), the water pump (23), and the water inlet of the storage water tank (6) are connected in series through water pipes in sequence.

4. A novel solar heat pump system according to claim 2, wherein The second circulation branch further includes: a heat exchange pipe (18), a throttle valve (3), a second stop valve (7), and a third stop valve (10). The heat exchange pipe (18) is arranged in the storage water tank (6); One end of the heat exchange pipe (18), the throttle valve (3), the third stop valve (10), the series-connected plurality of porous flat tube aluminum channels (14), the second stop valve (7), the compressor (2), and the other end of the heat exchange pipe (18) are connected in series through water pipes in sequence.

5. A novel solar heat pump system according to claim 4, wherein The third circulation branch further includes: a fourth stop valve (8) and a fifth stop valve (9); The outlet of the throttle valve (3), the fifth stop valve (9), the evaporator (4), the fourth stop valve (8), and the inlet of the compressor (2) are sequentially connected in series through water pipes.

6. A novel solar heat pump system according to claim 2, wherein The porous flat tube aluminum channel (14) includes: a tube body (24), through holes (20), and microgrooves (19). A number of through holes (20) are arranged side by side inside the tube body (24). The cross-section of the through holes (20) is rectangular. A number of microgrooves (19) are provided on the inner walls of the through holes (20). The shape of the tube body (24) is flat. The two ends of the number of through holes (20) are respectively connected to different connecting pipes.

7. A novel solar heat pump system according to claim 1, wherein The energy storage water tank (6) is further provided with a hot water branch. The hot water branch includes: a sixth stop valve (12) and a seventh stop valve (13). The water inlet of the energy storage water tank (6) is connected to the water outlet of the sixth stop valve (12) through a water pipe. The water inlet of the sixth stop valve (12) is connected to an external water supply source; The water inlet of the seventh stop valve (13) is connected to the water outlet of the energy storage water tank (6) through a water pipe.

8. A novel solar heat pump system according to claim 1, wherein It further includes: a fresh air heat exchange pipe (17). The heat exchange fluid outlet end of the fresh air unit (5) is connected to the inlet of the fresh air heat exchange pipe. The heat exchange fluid inlet end of the fresh air unit (5) is connected to the outlet of the fresh air heat exchange pipe (17). The fresh air heat exchange pipe (17) is arranged inside the energy storage water tank (6).

9. A novel solar heat pump system according to claim 7, wherein The fresh air unit (5), the first stop valve (11), the second stop valve (7), the third stop valve (10), the fourth stop valve (8), the fifth stop valve (9), the sixth stop valve (12), the seventh stop valve (13), the throttle valve (3), the evaporator (4), and the compressor (2) are all electrically connected to the controller.

10. A novel solar heat pump system according to claim 2, wherein The flat water pipe (16) is located below a number of micro heat pipes (15).

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