WO2022062413A1

WO2022062413A1 - Evaporative cooling and seasonal cold storage-based low energy consumption air conditioning cooling system

Info

Publication number: WO2022062413A1
Application number: PCT/CN2021/091826
Authority: WO
Inventors: 孙铁柱; 霍倩; 王冬冬; 罗绒; 王琪; 王鑫
Original assignee: 西安工程大学
Priority date: 2020-09-24
Filing date: 2021-05-06
Publication date: 2022-03-31
Also published as: CN112212429A

Abstract

An evaporative cooling and seasonal cold storage-based low energy consumption air conditioning cooling system, which comprises an evaporative cooling apparatus (17) having a connected exhaust pipe (12), the evaporative cooling apparatus (17) comprises a housing, an indirect evaporative cooler (5), a direct evaporative cooler (6), and a coiled pipe (16) which are all arranged in the housing, and an underground cold storage apparatus (24) which is connected to the coiled pipe (16); the air conditioning cooling system further comprises an ice making unit connected to the underground cold storage apparatus (24) by means of a water outlet pipe (8), and the underground cold storage apparatus (24) is provided with an underground ventilation unit.

Description

A Low Energy Consumption Air Conditioning Cooling System Based on Evaporative Cooling and Seasonal Cooling Storage

technical field

The invention belongs to the technical field of air conditioning and refrigeration, and relates to a low energy consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage.

Background technique

Air conditioning energy consumption accounts for the largest proportion of building energy consumption, and is one of the main directions of energy conservation and emission reduction. How to reduce air conditioning energy consumption and achieve cooling effect has become one of the current hot issues. Evaporative cooling technology is an energy-saving and environmentally friendly cooling method. However, due to the influence of environmental factors, it cannot meet the cooling requirements during certain periods of time during the air-conditioning period. The current treatment method is combined with mechanical refrigeration to meet the requirements. In order to save energy and protect the environment, Instead of using mechanical refrigeration, the cold energy in winter is stored and used when evaporative cooling cannot meet the requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage. In summer, evaporative cooling is used to provide the cooling capacity of the air-conditioning area. When it cannot meet the required cooling capacity, the storage The cold stored in the cold room is combined with evaporative cooling to continue to be supplied to the air conditioning system.

The technical solution adopted by the present invention is that a low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage includes an evaporative cooling device connected with an exhaust pipe, and the evaporative cooling device includes an indirect evaporative cooling device arranged in its shell. Cooler and direct evaporative cooler, the evaporative cooling device is provided with a coil, the coil is connected with an underground cold storage device, the underground cold storage device is connected with an ice making unit through a water outlet pipe, and the underground cold storage device is provided with an underground ventilation unit.

The invention is also characterized in that the air inlet of the indirect evaporative cooler is opposite to the air inlet of the evaporative cooling device, the first air outlet of the indirect evaporative cooler is opposite to the air inlet of the direct evaporative cooler, and the coil is located in the indirect evaporative cooler Between the first air outlet of the direct evaporative cooler and the air inlet of the direct evaporative cooler, the air outlet of the direct evaporative cooler is opposite to the first air outlet of the evaporative cooling device, and the air exhaust pipe is connected to the first air outlet of the evaporative cooling device. , the second air outlet of the indirect evaporative cooler is opposite to the second air outlet of the evaporative cooling device, and the second air outlet of the evaporative cooling device is communicated with the underground cold storage device.

A blower is arranged on the exhaust pipe close to the first exhaust port of the evaporative cooling device.

The ice-making unit includes an ice-making device. The ice-making device is provided with a plurality of ice-making tanks. The ice-making tanks are all connected with water supply pipes, and each water supply pipe is connected to the underground cold storage device through a water outlet pipe.

The underground cold storage device is arranged underground. The underground cold storage device includes a shell. The shell is provided with a cold storage chamber and a nozzle. The nozzle is located directly above the cold storage chamber, and the bottom of the cold storage chamber is connected. and the circulating water pump, the suction pump is connected with the water outlet pipe, the circulating water pump is connected with one end of the coil pipe through the first connecting pipe, and the other end of the coil pipe is connected with the nozzle through the second connecting pipe.

The cold storage compartment includes a plurality of ice storage racks arranged vertically side by side, an ice cube support is arranged under each ice storage rack, and a spray head is corresponding to the top of each ice storage rack.

The ice storage rack is composed of no less than four ice storage units in a row, the ice storage units are used for placing ice cubes, there are gaps between the ice storage units, and the bottom ends of the ice storage units are provided with water flow holes.

The underground ventilation unit includes an air supply pipe with one end located on the ground and the other underground. The top of the housing of the cold storage device is evenly arranged.

A ventilator is arranged near the ground port of the air supply duct.

The outer cover of the underground cold storage device is provided with a thermal insulation layer.

The beneficial effects of the present invention are:

1) The air-conditioning cooling system of the present invention uses the cold storage technology to store the natural cooling capacity in winter in the form of ice, and put it in the cold storage room to wait for the evaporative cooling air-conditioning in summer to meet the thermal comfort requirements of the air-conditioning area. Air conditioning energy consumption.

2) The air-conditioning cooling system of the present invention is provided with a plurality of ice storage racks in the cold storage device, each ice storage rack has a plurality of ice storage units, and each ice storage unit can place four to five ice cubes, so that the The ice cubes are placed according to the required requirements to store as much cold as possible, and there is a gap between each ice storage unit, so that the water can flow down smoothly and increase the heat exchange area between the water and the ice.

3) The air-conditioning cooling system of the present invention is provided with an underground ventilation unit, which can firstly ventilate cold air during cold storage in winter, so that the cold storage room can be lowered to below zero, the purpose is to prevent the heat in the cold storage room from consuming the ice contained in it. Cooling capacity, so as to save more cooling capacity and avoid the loss of cooling capacity on the wall. .

4) An insulating layer is provided outside the underground cold storage device of the air-conditioning cooling system of the present invention, which can increase the thermal insulation effect of the cold storage room and reduce the loss of cooling capacity of the cold storage room.

Description of drawings

1 is a schematic structural diagram of a low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage of the present invention;

FIG. 2 is a partial schematic diagram of an underground cold storage device of a low energy consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage according to the present invention.

In the figure, 1. Ice making tank, 2. Ice making device, 3. Water supply pipe, 4. Air conditioning area, 5. Indirect evaporator, 6. Direct evaporator, 7. Blower, 8. Water outlet, 9. Ventilator , 10. Air supply pipe, 11. Artificial channel, 12. Exhaust pipe, 13. Ice storage rack, 14. Suction water pump, 15. Circulating water pump, 16. Coil pipe, 17. Evaporative cooling device, 18. Air supply port , 19. Nozzle, 20. Ice storage unit, 21. Cold storage room, 22. Ice cube holder, 23. Insulation layer, 24. Underground cold storage device, 25. Shell, 26. First connecting pipe, 27. Section Two connecting pipes.

detailed description

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

The present invention is a low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage. As shown in FIG. 1, the air-conditioning cooling system includes an evaporative cooling device 17 connected with an exhaust pipe 12, and the evaporative cooling device 17 includes a housing. , the indirect evaporative cooler 5 and the direct evaporative cooler 6 arranged in the casing, and the evaporative cooling device 17 also includes a coil 16 arranged in the casing. The air-conditioning cooling system also includes an underground cold storage device 24 and an ice making unit, the coil 16 is connected to the underground cold storage device 24, the underground cold storage device 24 is connected to the ice making unit through the water outlet pipe 8, and the underground cold storage device 24 is installed. There are underground ventilation units.

The evaporative cooling device 17 includes an air inlet provided on its housing, and the air inlet of the indirect evaporative cooler 5 is opposite to the air inlet of the evaporative cooling device 17 .

The indirect evaporative cooler 5 has a first air outlet and a second air outlet. The evaporative cooling device 17 has a first air outlet and a second air outlet provided on its casing. The first air outlet of the indirect evaporative cooler 5 is opposite the air inlet of the direct evaporative cooler 6 , and the coil 16 is located between the first air outlet of the indirect evaporative cooler 5 and the air inlet of the direct evaporative cooler 6 . The air outlet of the direct evaporative cooler 6 is opposite to the first air outlet of the evaporative cooling device 17 . A blower 7 is provided at an air outlet for discharging cooling air into the air-conditioning area 4 . The second air outlet of the indirect evaporative cooler 5 is opposite to the second air outlet of the evaporative cooling device 17 , and the second air outlet of the evaporative cooling device 17 is communicated with the underground cold storage device 24 .

The ice-making unit includes an ice-making device 2. The ice-making device 2 is provided with a plurality of ice-making tanks 1. The ice-making tanks 1 are all connected with water supply pipes 3. Each water supply pipe 3 is connected to the underground cold storage device 24 through a water outlet pipe 8. connect.

As shown in FIG. 2 , the underground cold storage device 24 is arranged underground, and an artificial channel 11 is set between the underground cold storage device 24 and the ground. The artificial channel 11 is used for manual transportation of ice cubes and maintenance, and the underground cold storage device 24 is covered by an outer cover. There is a thermal insulation layer 23, and the underground cold storage device 24 includes a casing 25. The casing 25 is provided with a cold storage chamber 21 and a nozzle 19. The nozzle 19 is located directly above the cold storage chamber 21, and the bottom of the cold storage chamber 21 communicates. The bottom of the casing 25 A suction pump 14 and a circulating water pump 15 are respectively connected and arranged. The suction pump 14 is connected with the water outlet pipe 8 for supplying water to the ice making unit for ice making. The circulating water pump 15 is connected to one end of the coil 16 through the first connecting pipe 26 , the other end of the coil 16 is connected to the nozzle 19 through the second connecting pipe 27, and the water below the cold storage chamber 21 is supplied to the coil 16 through the first connecting pipe 26 to cool the air flowing through the coil 16, and The water absorbed by the coil 16 is supplied to the spray head 19 for spraying through the second connecting pipe 27 .

The cold storage compartment 21 includes a plurality of ice storage racks 13 arranged vertically side by side. An ice cube holder 22 is provided under each ice storage rack 13. The ice cube holder 22 is used to support ice cubes. The upper part corresponds to a nozzle 19 . The ice storage rack is composed of at least four ice storage units 20 in a row. The ice storage units 20 are used for placing ice cubes. There are gaps between the ice storage units 20. The water sprayed by the spray head 19 can smoothly flow down through the gap between the ice storage units 20 to form a water circulation.

The underground ventilation unit includes an air supply pipe 10 with one end located on the ground and the other under the ground. One end of the air supply pipe 10 located underground is a closed port, and one end located on the ground is an open port. The air supply pipe 10 is provided with a ventilator near its ground port. 9. A plurality of air supply ports 18 are provided on the pipe section of the air supply pipe 10 located in the underground ventilation unit. The air supply ports 18 are located above the casing 25 of the underground cold storage device 24 and are evenly arranged.

The working principle of a low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage provided by the present invention is as follows:

1) The working process of the system during cold storage in winter:

Start the fan 9, let the cold air from the outside enter the area of the underground cold storage device 24 from the air supply pipe 10, discharge the heat in the area of the underground cold storage device 24, and turn on the water pump 14 to pump the melted water in the previous summer to the ice making device In the ice making tank 1 of 2, at the same time use the outdoor environment below zero to freeze, and then transport the produced ice to the ice storage unit 20 of the cold storage room 21 through the artificial channel, until all the melted water is made into ice and stored in the ice tank. Ice storage unit 20 .

2) The working process of the system during the transition season and summer cooling:

When only direct evaporative cooling can meet the air supply requirements of the air-conditioning zone 4, the underground cold storage device 24 does not operate, and the outdoor air passes through the indirect evaporative cooler 5 for wet cooling, and then passes through the direct evaporative cooler 6 for isoenthalpy cooling. The blower 7 and the exhaust duct 12 are sent into the room to meet the indoor comfort requirements of the air-conditioned area 4 .

When the outdoor climate is relatively hot and the air supply requirements of the air-conditioning zone 4 cannot be met only by the evaporative cooling technology, the underground cold storage device 24 operates, and the outdoor air passes through the indirect evaporative cooler 5 for humid cooling, and then passes through the coil 16 for dehumidification and cooling. The direct evaporative cooler 6 does not operate, and is then sent into the room through the blower 7 to meet the indoor comfort requirements of the air-conditioned area 4 . During this process, the circulating water pump 15 transports the cold water at the bottom of the shell 25 of the underground cold storage device 24 to the coil 16 through the first pipe 26 to dehumidify and cool the outdoor air, and the cold water that absorbs heat is then transported to the sprinkler head 19 through the second pipe 29 , each ice storage rack 13 is sprayed by the spray head 19 to be cooled, and flows down to the bottom of the cold storage chamber 21 along the gap between the ice storage units 20 to obtain cold water. cycle in turn.

It can be seen from the above methods that the present invention provides a low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage, which combines seasonal cold storage and evaporative cooling, and stores the cold energy in winter to make ice in summer. Enable when indoor requirements cannot be met. It greatly saves energy consumption and has high economic and social value.

Claims

A low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage, characterized by comprising an evaporative cooling device (17) connected with an exhaust pipe (12), the evaporative cooling device (17) comprising a housing, An indirect evaporative cooler (5), a direct evaporative cooler (6), a coil (16), and an underground cold storage device (24) connected to the coil (16), which are arranged in the housing, the The air conditioning cooling system further includes an ice making unit connected to the underground cold storage device (24) through a water outlet pipe (8), and the underground cold storage device (24) is provided with an underground ventilation unit.
A low energy consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 1, characterized in that the air inlet of the indirect evaporative cooler (5) and the air intake of the evaporative cooling device (17) The first air outlet of the indirect evaporative cooler (5) is opposite to the air inlet of the direct evaporative cooler (6), and the coil (16) is located at the first air outlet of the indirect evaporative cooler (5). Between the air inlet of the direct evaporative cooler (6), the air outlet of the direct evaporative cooler (6) is opposite to the first air outlet of the evaporative cooling device (17). The first air outlet of the evaporative cooling device (17) is connected, and the second air outlet of the indirect evaporative cooler (5) is opposite to the second air outlet of the evaporative cooling device (17). The second air outlet is communicated with the underground cold storage device (24).
The low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 2, wherein the air exhaust pipe (12) is close to the first air outlet of the evaporative cooling device (17) A blower (7) is provided.
The low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 1, wherein the ice-making unit comprises an ice-making device (2), wherein the ice-making device (2) is A plurality of ice-making tanks (1) are provided, the ice-making tanks (1) are all connected with water supply pipes (3), and each of the water supply pipes (3) is connected to an underground cold storage device (3) through a water outlet pipe (8). 24) Connect.
The low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 4, wherein the underground cold storage device (24) is arranged underground, and the underground cold storage device (24) It comprises a casing (25), a cold storage chamber (21) and a spray head (19) are arranged in the casing (25), the spray head (19) is located directly above the cold storage chamber (21), and the cold storage chamber (21) communicate with the bottom, the bottom of the casing (25) is respectively connected with a suction pump (14) and a circulating water pump (15), the suction pump (14) is connected with the water outlet pipe (8), and the circulating water pump ( 15) One end of the coiled pipe (16) is connected through the first connecting pipe (26), and the other end of the coiled pipe (16) is connected with the spray head (19) through the first connecting pipe (27).
The low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 5, wherein the cold storage chamber (21) comprises a plurality of ice storage shelves (13) vertically arranged side by side ), each ice storage rack (13) is provided with a plurality of ice cube holders (22), and each ice storage rack (13) corresponds to a spray head (19).
The low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 6, wherein the ice storage rack (13) is formed by at least four ice storage units (20) in a row The ice storage units (20) are used for placing ice cubes, there are gaps between the ice storage units (20), and water holes are provided at the bottom ends of the ice storage units (20).
The low-energy-consumption air-conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 5, wherein the underground ventilation unit comprises an air supply pipe (10) whose one end is located on the ground and the other end is located underground, so One end of the air supply pipe (10) located on the ground is a closed port, and the end located on the ground is an open port. The air supply pipe (10) is provided with a plurality of air supply ports (18), and the air supply ports (18) are located at The upper part of the casing (25) of the underground cold storage device (24) is evenly arranged.
The low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 8, characterized in that, a fan (9) is provided near the ground port of the air supply pipe (10).
The low-energy-consumption air conditioning cooling system based on evaporative cooling and seasonal cold storage according to claim 1, wherein the underground cold storage device (24) is covered with a thermal insulation layer (23).