CN111296297A - Passive multi-stage evaporative cooling air conditioning system with cobblestone cold accumulation and dual purposes in winter and summer - Google Patents

Abstract

The invention discloses a passive multi-stage evaporative cooling air-conditioning system for winter and summer that uses cobblestones to store cold. The evaporative cooling unit is also connected to the lower part of the breeding workshop through the air supply pipe. An exhaust fan is connected to the side wall of the breeding workshop away from the air supply pipe. The roof of the breeding workshop is provided with a cobblestone heat storage unit. The solar power generation unit is electrically connected to the multi-stage evaporative cooling unit through a cable, and the multi-stage evaporative cooling unit is also connected to the cobblestone heat storage unit through a fourth water supply pipe. The passive multi-stage evaporative cooling air-conditioning system for winter and summer using pebbles for cold storage of the present invention solves the problems in the prior art that the cooling effect of fans or simple watering is poor and the energy consumption of mechanical refrigeration is large.

Description

Passive multi-stage evaporative cooling air conditioning system with cobblestone cold storage for both winter and summer

technical field

The invention belongs to the technical field of air-conditioning equipment, and relates to a passive multi-stage evaporative cooling air-conditioning system that uses pebbles to store cold in winter and summer.

Background technique

At present, people have not paid enough attention to the issue of agricultural breeding environment. Agricultural breeding sites have large space, uneven air distribution, indoor comfort, ambient temperature and fresh air volume requirements are becoming more and more strict. At present, my country's energy There are still major problems in the utilization of low utilization efficiency, poor economic benefits, and great pressure on the ecological environment. Energy conservation and emission reduction, and improving energy utilization are important elements in our energy development strategic plan.

In the summer of agricultural farms, the heat emitted by livestock and poultry, if only fans or simple watering methods are used to cool down, will have little effect. health, thus triggering the current epidemic, bird flu and so on. If the traditional mechanical refrigeration and air conditioning is used, the initial investment is large, the operating cost is high, and the energy is wasted.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a passive multi-stage evaporative cooling air-conditioning system for winter and summer with cobblestone cold storage, which solves the problems in the prior art that the cooling effect of fans or simple watering is poor and the energy consumption of mechanical refrigeration is large.

The technical scheme adopted in the present invention is that the passive multi-stage evaporative cooling air-conditioning system for winter and summer with cobblestone cold storage includes a multi-stage evaporative cooling unit, and the multi-stage evaporative cooling unit is connected to the roof of the breeding workshop through a secondary air supply pipe The multi-stage evaporative cooling unit is also connected to the lower part of the breeding plant through the air supply pipe. The side wall of the breeding plant away from the air supply pipe is connected with an exhaust fan. The roof of the breeding plant is provided with a cobblestone heat storage unit, and the roof of the breeding plant is A solar power generation unit is arranged on the solar power generation unit, and the solar power generation unit is electrically connected to the multi-stage evaporative cooling unit through a cable, and the multi-stage evaporative cooling unit is also connected to the cobblestone heat storage unit through a fourth water supply pipe.

The present invention is also characterized in that,

The multi-stage evaporative cooling unit includes a unit casing. The two side walls corresponding to the unit casing are respectively provided with an air inlet and an air outlet. According to the flow direction of the air inlet, the unit casing is provided with a primary filter and a horizontal tube indirect evaporation. Cooler, direct evaporative cooler, water baffle, fan b and medium-efficiency filter, the air outlet is connected to the lower part of the breeding plant through the air supply pipe, and the horizontal tube indirect evaporative cooler is connected to the breeding plant through the secondary air supply pipe In the roof of 1, the horizontal tube indirect evaporative cooler, the direct evaporative cooler and the fan b are respectively electrically connected to the solar power generation unit through cables, and the direct evaporative cooler is connected to the cobblestone heat storage unit through the fourth water supply pipe.

The horizontal tube type indirect evaporative cooler includes a horizontal tube type heat exchange tube bundle, a first water distributor is arranged above the horizontal tube type heat exchange tube bundle, and a circulating water tank a, a circulating water tank a and a first cloth are arranged below the horizontal tube type heat exchange tube bundle. The water device is communicated through the first water supply pipe, and also includes a secondary air supply port arranged on the top of the unit shell corresponding to the top of the first water distributor, a secondary air supply port, and the secondary air supply port is connected with a secondary air exhaust air The secondary air exhaust pipe is connected to the roof of the breeding workshop through the secondary air supply pipe.

The first water supply pipe is also provided with a water pump a and a gate valve V, and a fan a is provided in the secondary air supply port, and the fan a and the water pump a are respectively electrically connected to the solar power generation unit through cables.

The direct evaporative cooler includes a filler, a circulating water tank b is arranged below the filler, a second water distributor and a fourth water distributor are respectively arranged above the filler and on the side close to the horizontal tube indirect evaporative cooler, the second water distributor and The fourth water distributors are all provided with nozzles that spray toward the filler, the circulating water tank b communicates with the second water distributor and the fourth water distributor through the second water supply pipe and the third water supply pipe respectively, and the circulating water tank b passes through the fourth water distributor. The water supply pipe is connected to the cobblestone heat storage unit, and a gate valve V is arranged on the fourth water supply pipe.

The second water supply pipe and the third water supply pipe are also provided with a water pump b and a water pump c, respectively, and a gate valve V and a gate valve V are respectively provided on the second water supply pipe and the third water supply pipe. Connect the solar power unit.

The roof of the breeding plant is provided with a suspended top layer, and the cobblestone heat storage unit includes at least one layer of cobblestones evenly laid on the suspended top layer of the roof of the breeding plant. There is a third water distributor with a vertical part, the upper end of the third water distributor protrudes from the cobblestone, and the upper end of the protruding cobblestone is evenly provided with a plurality of nozzles for spraying toward the cobblestone, and the upper end of the third water distributor is also connected with a third water distributor. Five water supply pipes, the suspended top layer is located below the cobblestone and a direct evaporative cooler is connected through the fourth water supply pipe.

The secondary air supply pipe is connected with the hanging top layer above the cobblestone, and the side of the secondary air supply pipe close to the breeding workshop is provided with a filter screen.

The solar power generation unit includes a solar power generation panel arranged on the roof of the breeding workshop, the solar power generation panel is connected with a controller through wires, and the controller is respectively connected with a battery, a horizontal tube indirect evaporative cooler, a direct evaporative cooler, and a fan b through the wires. and consumer electrical equipment.

The two side walls corresponding to the aquaculture plant are respectively provided with an air supply duct and an air exhaust duct extending along the height direction of the side walls. The air outlet a and the air outlet b are respectively opened at the lower part and the upper part and the lower part of the side of the exhaust duct close to the aquaculture plant are respectively provided with an air outlet a and an air outlet b, and the exhaust fan is arranged on the upper end of the exhaust duct.

The beneficial effects of the present invention are

(1) The present invention uses photovoltaic power generation panels to supply power to tall and large space aquaculture plants and their equipment through automatic control devices, and in the case of excess power storage, it can be stored in batteries through automatic control devices, which can improve the utilization of clean and green energy. rate, and greatly reduce the electricity cost of high-space aquaculture workshops.

(2) the present invention will strengthen the exhaust air through the unpowered fan, according to the characteristics of dry air energy in winter and summer, the ventilation mode with displacement ventilation as the core is mainly adopted in summer, so as to improve the heat exchange capacity of the high-space farm, and In this way, the air quality in the factory can be improved. Moreover, the low-e glass is used as the glass curtain wall in the breeding plant. In summer, the indoor temperature is lower than that of the outdoor, and the glass is required to be insulated, that is, the outdoor heat is transferred to the indoor as little as possible, and the low-e glass can meet the requirements of winter and summer. It can not only keep heat and heat insulation, but also has the effect of environmental protection and low carbon.

(3) In the present invention, the direct evaporative cooler adopts the combined three-dimensional water distribution above and the front, and the front adopts nozzle spraying, and the sprayed water has a long contact time with the precooled primary air and sufficient heat exchange, so as to achieve better Low wet bulb temperature, humidity regulation standard.

(4) In the air-conditioning unit that combines indirect evaporative cooling and direct evaporative cooling, the water supply part of the direct evaporative cooler can not only use conventional circulating water to humidify the air with isoenthalpy, but due to the particularity of the region, the temperature difference between day and night in the northwest region is large. , especially in summer, the secondary air channel of the indirect evaporative cooler in the unit can use the cooling capacity at night to store the cooling capacity of the cobblestone heat storage unit on the roof of the factory building. The water supply pipe transfers energy in time and space. Thereby a "low loss" of energy is achieved.

Description of drawings

Fig. 1 is the structural representation of the dual-use multi-stage evaporative cooling air-conditioning system for winter and summer of the present invention;

FIG. 2 is a schematic structural diagram of a solar power generation unit in a multi-stage evaporative cooling air conditioning system for both winter and summer according to the present invention.

In the figure, 1. Air inlet, 2. Air inlet pipe, 3. Primary filter, 4. Horizontal tube indirect evaporative cooler, 5. Fan a, 5-1. Secondary air supply port, 6. Secondary Air supply pipe, 7. Horizontal tube heat exchange tube bundle, 8. Circulating water tank a, 9. First water distributor, 10. First water supply pipe, 11. Water pump a, 12. Fourth water distributor, 13. Direct evaporative cooler, 14. Second water distributor, 15. Second water supply pipe, 16. Third water supply pipe, 17. Packing, 18. Circulating water tank b, 19. Water pump b, 20. Water baffle, 21. Fan b, 22. Medium-efficiency filter, 23. Air outlet, 24. Air supply pipe, 25. Fourth water supply pipe, 26. Air supply port a, 27. Air supply port b, 28. Air exhaust port a, 29. Exhaust Air outlet b, 30. Exhaust fan, 31. Filter screen, 32. Cobblestone heat storage unit, 33. Third water distributor, 34. Fifth water supply pipe, 35. Solar power panel, 36. Low-e glass, 37 .Water pump c, 38. Multi-stage evaporative cooling unit, 39. Secondary air exhaust duct, 40. Air supply duct, 41. Air exhaust duct, 42. Battery, 43. Controller, 44. User electrical equipment, 45 . Hanging top layer, 46. Valve.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The multi-stage evaporative cooling air-conditioning system for passive cooling in winter and summer with pebbles of the present invention, its structure is shown in FIG. 1 , and includes a multi-stage evaporative cooling unit 38. In the roof of the workshop, the multi-stage evaporative cooling unit 38 is also connected to the lower part of the breeding workshop through the air supply pipe 24. The side wall of the breeding workshop away from the air supply pipe 24 is connected with an exhaust fan 30. The roof of the breeding workshop is provided with cobblestones. The heat storage unit 32 is provided with a solar power generation unit on the roof of the breeding plant. The solar power generation unit is electrically connected to the multi-stage evaporative cooling unit 38 through cables. The multi-stage evaporative cooling unit 38 is also connected to the cobblestone heat storage unit 32 through the fourth water supply pipe 25. .

The multi-stage evaporative cooling unit 38 includes a unit casing. The two side walls corresponding to the unit casing are respectively provided with an air inlet 1 and an air outlet 23. The unit casing is sequentially provided with a primary filter 3, a horizontal filter 3, a horizontal filter, The tubular indirect evaporative cooler 4, the direct evaporative cooler 13, the water baffle 20, the fan b21 and the medium-efficiency filter 22, the air outlet 23 is connected to the lower part of the breeding workshop through the air supply pipe 24, and the horizontal tubular indirect evaporative cooler 4. Connected to the roof of the breeding plant through the secondary air supply pipe 6, the horizontal tube indirect evaporative cooler 4, the direct evaporative cooler 13 and the fan b21 are respectively electrically connected to the solar power generation unit through cables, and the direct evaporative cooler 13 The four water supply pipes 25 are connected to the cobblestone heat storage unit 32 .

The horizontal tube type indirect evaporative cooler 4 includes a horizontal tube type heat exchange tube bundle 7, a first water distributor 9 is arranged above the horizontal tube type heat exchange tube bundle 7, a circulating water tank a8 is arranged below the horizontal tube type heat exchange tube bundle 7, and the circulating water tank The a8 is communicated with the first water distributor 9 through the first water supply pipe 10, and further includes a secondary air supply port 5-1 arranged on the top of the unit casing corresponding to the upper part of the first water distributor 9. The secondary air supply port 5- 1. The secondary air supply port 5-1 is connected with a secondary air exhaust pipe 39. The secondary air exhaust pipe 39 is connected to the roof of the breeding plant through the secondary air supply pipe 6. The top of the secondary air exhaust pipe 39 Set to valve 46.

The first water supply pipe 10 is also provided with a water pump a11 and a gate valve V1, and a fan a5 is provided in the secondary air supply port 5-1. The fan a5 and the water pump a11 are respectively electrically connected to the solar power generation unit through cables.

The direct evaporative cooler 13 includes a filler 17, a circulating water tank b18 is arranged below the filler 17, and a second water distributor 14 and a fourth water distributor 12 are arranged above the filler 17 and on the side close to the horizontal tube indirect evaporative cooler 4, respectively. , the second water distributor 14 and the fourth water distributor 12 are both provided with nozzles that spray toward the filler 17, and the circulating water tank b18 is connected to the second water distributor 14 and the second water distributor 14 and The fourth water distributor 12 is connected, and the circulating water tank b18 is connected to the cobblestone heat storage unit 32 through the fourth water supplement pipe 25 , and the fourth water supplement pipe 25 is provided with a gate valve V4 .

The second water supply pipe 15 and the third water supply pipe 16 are also provided with a water pump b19 and a water pump c37, respectively. The second water supply pipe 15 and the third water supply pipe 16 are also provided with a gate valve V3 and a gate valve V2, respectively. The solar power generation units are electrically connected through cables.

The roof of the breeding workshop is provided with a suspended top layer 45. The cobblestone heat storage unit 32 includes at least one layer of cobblestones evenly laid on the suspended top layer 45 in the roof of the breeding workshop. The roof of the breeding workshop is set to low-e glass 36. The third water distributor 35 of the vertical part is arranged at the middle position of the suspended top layer 45, the upper end of the third water distributor 35 protrudes from the pebbles and the upper end of the protruding pebbles is evenly provided with a plurality of nozzles for spraying towards the pebbles. The upper end of the three water distributors 35 is also connected with a fifth water supply pipe 34 , and the suspended top layer 45 is located below the cobblestone and is also connected with a direct evaporative cooler 13 through a fourth water supply pipe 25 .

The secondary air supply pipe 6 communicates with the suspended top layer 45 above the cobblestone, and a filter screen 31 is provided on the side of the secondary air supply pipe 6 close to the breeding workshop.

As shown in FIG. 2 , the solar power generation unit includes a solar power generation panel 35 arranged on the roof of the breeding workshop. The solar power generation panel 35 is connected to a controller 43 through wires, and the controller 43 is respectively connected to a battery 42 and a horizontal tube indirect Evaporative cooler 4 , direct evaporative cooler 13 , fan b21 and consumer electrical equipment 44 .

The two side walls corresponding to the breeding workshop are respectively provided with an air supply duct 40 and an air exhaust duct 41 extending along the height direction of the side walls, the air supply duct 24 is communicated with the lower part of the air supply duct 40, and the air supply duct 40 is close to the inside of the breeding workshop. The upper and lower parts of one side are respectively provided with air outlet a26 and air outlet b27, the upper and lower parts of the air exhaust duct 41 close to one side in the breeding workshop are respectively provided with air outlet a28 and air outlet b29, and the exhaust fan 30 is provided with at the upper end of the exhaust duct 41 .

The air inlet 1 of the present invention is connected to the side wall of the unit casing through the air inlet pipe 2 .

The present invention adopts pebbles to store heat by absorbing inexhaustible solar energy, and can conduct heat transfer and heating indoors through radiation heat transfer at night.

The exhaust fan 30 of the present invention is an unpowered exhaust fan.

The working principle of the multi-stage evaporative cooling air conditioning system for both winter and summer of the present invention is as follows:

(1) Summer processing process:

The fresh air entering from the air inlet 1 is filtered by the primary filter 3, the primary air and the secondary air are exchanged through the horizontal tube heat exchange tube bundle 7 of the horizontal tube indirect evaporative cooler 4, and the air outside the horizontal tube heat exchange pipeline The flow channel is a wet channel. A uniform water film is formed on the outer surface of the heat exchange tube in the spray water and the wet channel. The water film evaporates by absorbing heat, and the temperature is close to the wet bulb temperature of the secondary air. The secondary air enters from the bottom. The wet channel outside the horizontal tube heat exchange tube bundle 7 is in direct contact with water to generate an isoenthalpy humidification process. If it is in the daytime, the secondary air supply pipe 6 is closed, and the secondary air supply pipe 6 is passed through the fan a5 and then through the secondary air exhaust port 39. Row outside. If at night, due to the large temperature difference between day and night in the northwest region, dry air can be easily obtained, then close the valve 46 at the top of the secondary air exhaust duct 39, and through the action of the fan a5, the secondary air can pass through the secondary air supply duct 6 and the filter screen 31 enable the lower temperature secondary air to perform convection heat exchange with the cobblestone heat storage unit 32, so that it stores the cold energy at night and releases it during the day. The temperature of the water film outside the horizontal tube heat exchange tube bundle 7 decreases, and the primary air passes through the inner side of the horizontal tube heat exchange tube bundle 7 to transfer heat to the water film, and the water film transfers the heat to the secondary air. The dry channel that flows through the horizontal tube heat exchange tube bundle 7 is pre-cooled and cooled by isohumidity cooling, and then the heat is exchanged by the direct evaporative cooler 13. The cold energy stored in the cobblestone heat storage unit 32 at night passes through the third heat exchanger during the day. The water distributor 33 sprays water, and the water exchanges heat with the cobblestone heat storage unit 32 by means of heat conduction and convective heat transfer. The water takes away the cold energy stored by the cobblestones, and the valve V4 is opened, and the fourth water supply pipe 25 is passed to the water. The water with a lower temperature is mixed with the circulating water of the circulating water tank b18 by the water pump b19, and the water sprayed by the nozzles of the second water supply pipe 15, the second water distributor 14 and the fourth water distributor 12 is sprayed onto the filler 17. , the primary air is in direct contact with the spray water through the filler 17, and the air loses sensible heat and obtains latent heat. The treatment process is isoenthalpy cooling and humidification, so that the primary air obtained by it gets a lower temperature, and the primary air passes through the water baffle 20, the fan b21, filter through the medium-efficiency filter 22, and then send it into the air supply duct 40 through the air supply pipe 24, and send it into the room through the air supply port a26. In summer, the indoor ambient temperature is often high, so the air supply method of displacement ventilation in tall spaces is adopted. The characteristics of displacement ventilation are based on the principle of low induction ratio, and fresh cold air is sent into the lower part of the room at a low speed. It spreads along the ground and forms an "air lake" at the bottom of the workshop. The heat generated by the breeding staff and poultry in the breeding workshop will be discharged outdoors through the density difference between the upper and lower air in the tall workshop. The hot air will be discharged from the air supply port b through the air supply port b. Due to the difference in air density, the hot air will be discharged through the air exhaust port a28 and the unpowered exhaust fan 30, so as to achieve the effect of cooling.

(2) Transition season processing process:

In the process of transitional seasons, indirect evaporative coolers and direct evaporative coolers are not used, and a comprehensive flow of ventilation is adopted. Air inlet 1 is opened, and all the fresh air required in the room enters through air inlet 1. The primary air passes through fan b21 and will be sent through The air duct 40 and the air supply port a26 are sent into the room, and the indoor turbid air is taken away from the air outlet b29 and sent to the outside through the air exhaust duct 41 and the unpowered fan 30. If the air in the breeding plant is dry, turn on the high pressure. The nozzles 12 of the spray device humidify the primary air to meet the comfort requirements of the poultry.

Winter treatment process:

When the unit is not turned on, during the day, the solar radiation emitted by the sun passes through the low-e glass 36, and the low-e glass has the function of thermal insulation. The heat energy emitted by the sun makes its heat stored in the cobblestone heat storage unit 32, and at night, the aquaculture plant is heated by radiant heat transfer.

Claims (10)

1. the multi-stage evaporative cooling air-conditioning system for both winter and summer with passive cold storage with cobblestone, is characterized in that, comprises multi-stage evaporative cooling unit (38), and described multi-stage evaporative cooling unit (38) passes through secondary air supply pipe (6 ) is communicated with in the roof of the breeding workshop, the multi-stage evaporative cooling unit (38) is also communicated with the lower part in the breeding workshop through the air supply pipe (24), and the breeding workshop is far from the side of the air supply pipe (24) An exhaust fan (30) is connected on the wall, a cobblestone heat storage unit (32) is arranged on the roof of the breeding workshop, and a solar power generation unit is arranged on the roof of the breeding workshop, and the solar power generation unit is electrically connected by a cable The multi-stage evaporative cooling unit (38) is further connected to the cobblestone heat storage unit (32) through a fourth water supply pipe (25). 2. The multi-stage evaporative cooling air-conditioning system according to claim 1, wherein the multi-stage evaporative cooling unit (38) comprises a unit casing, and two side walls corresponding to the unit casing are respectively provided with inlets. The air outlet (1) and the air outlet (23) are provided with a primary filter (3), a horizontal-pipe indirect evaporative cooler (4), and a direct evaporative cooler (13) in sequence according to the flow direction of the incoming air in the casing of the unit. ), a water baffle (20), a fan b (21) and a medium-efficiency filter (22), the air outlet (23) communicates with the lower part in the aquaculture plant through an air supply pipe (24), and the horizontal pipe The indirect evaporative cooler (4) is connected to the roof of the aquaculture plant through the secondary air supply pipe (6). ) are respectively electrically connected to the solar power generation units through cables, and the direct evaporative cooler (13) is connected to the cobblestone thermal storage unit (32) through a fourth water supply pipe (25). 3. The multi-stage evaporative cooling air conditioning system according to claim 2, wherein the horizontal tube type indirect evaporative cooler (4) comprises a horizontal tube type heat exchange tube bundle (7), and the horizontal tube type heat exchange tube bundle (7) A first water distributor (9) is arranged above the tube bundle (7), and a circulating water tank a (8) is arranged below the horizontal tube heat exchange tube bundle (7), the circulating water tank a (8) and the first water distribution The water distributor (9) is communicated through the first water supply pipe (10), and further comprises a secondary air supply port (5-1) arranged on the top of the unit casing corresponding to the top of the first water distributor (9). The air supply port (5-1), the secondary air supply port (5-1) is connected with a secondary air exhaust pipe (39), and the secondary air exhaust pipe (39) passes through the secondary air supply pipe (6). ) is connected to the roof of the breeding workshop, and the top of the secondary air exhaust pipe (39) is provided with a valve (46). 4. The multi-stage evaporative cooling air-conditioning system according to claim 3, wherein the first water supply pipe (10) is further provided with a water pump a (11) and a gate valve V1, and the secondary air supply port ( 5-1) A fan a (5) is provided inside, and the fan a (5) and the water pump a (11) are respectively electrically connected to the solar power generation unit through cables. 5. The multi-stage evaporative cooling air-conditioning system according to claim 2 or 3, wherein the direct evaporative cooler (13) comprises a filler (17), and a circulating water tank b ( 18), a second water distributor (14) and a fourth water distributor (12) are respectively provided above the filler (17) and on the side close to the horizontal tube indirect evaporative cooler (4). The water distributor (14) and the fourth water distributor (12) are both provided with nozzles that spray toward the filler (17), and the circulating water tank b (18) passes through the second water supply pipe (15) and the second water supply pipe (15), respectively. The three water supply pipes (16) are communicated with the second water distributor (14) and the fourth water distributor (12), and the circulating water tank b (18) is connected to the cobblestone thermal storage through the fourth water supply pipe (25) In the unit (32), a gate valve V4 is provided on the fourth water supply pipe (25). 6 . The multi-stage evaporative cooling air conditioning system according to claim 5 , wherein the second water supply pipe ( 15 ) and the third water supply pipe ( 16 ) are respectively provided with a water pump b ( 19 ) and a water pump c 6 . (37), the second water supply pipe (15) and the third water supply pipe (16) are also provided with a gate valve V3 and a gate valve V2, respectively, and the water pump b (19) and the water pump c (37) are electrically connected through cables. Connect the solar power unit. 7. The multi-stage evaporative cooling air-conditioning system according to claim 1 or 2, wherein the roof of the breeding workshop is provided with a suspended top layer (45), and the cobblestone heat storage unit (32) is included in the breeding workshop. At least one layer of cobblestones is evenly laid on the suspended top layer (45) in the roof, the roof of the breeding workshop is set to low-e glass (36), and the middle position in the suspended top layer (45) of the breeding workshop is provided with The third water distributor (35) of the vertical part, the upper end of the third water distributor (35) protrudes from the cobblestone, and the upper end of the third water distributor (35) is evenly provided with a plurality of nozzles for spraying toward the cobblestone, so The upper end of the third water distributor (35) is also connected with a fifth water supply pipe (34), and the suspended top layer (45) is located below the cobblestone and is also connected with a direct evaporative cooler (13) through a fourth water supply pipe (25). 8 . The multi-stage evaporative cooling air conditioning system according to claim 7 , wherein the secondary air supply pipe ( 6 ) is in communication with the suspended top layer ( 45 ) located above the cobblestone, and the secondary air supply pipe ( 6 ) A filter screen (31) is provided on the side of the air supply pipe (6) close to the breeding workshop. 9. The multi-stage evaporative cooling air conditioning system according to claim 1 or 2, wherein the solar power generation unit comprises a solar power generation panel (35) arranged on the roof of a cultivation workshop, and the solar power generation panel (35) ) is connected with a controller (43) through a wire, and the controller (43) is respectively connected with a battery (42), a horizontal tube indirect evaporative cooler (4), a direct evaporative cooler (13), a fan b ( 21) and user electrical equipment (44). 10. The multi-stage evaporative cooling air-conditioning system according to claim 1 and 2, wherein the corresponding two side walls of the cultivating plant are respectively provided with air supply ducts (40) extending along the height direction of the side walls. ) and an air exhaust duct (41), the air supply duct (24) is communicated with the lower part of the air supply duct (40), and the upper and lower parts of the air supply duct (40) close to one side in the breeding workshop are respectively provided with Air supply port a (26) and air supply port b (27), the upper and lower parts of the air exhaust duct (41) close to one side in the aquaculture plant are respectively provided with an air exhaust port a (28) and an air exhaust port b. (29), the exhaust fan (30) is arranged at the upper end of the exhaust duct (41).

Images