CN104006468B - The cold storage air conditioning apparatus combined with water curtain outer wall based on evaporation cooling - Google Patents

Abstract

The cold storage air conditioner based on the combination of evaporative cooling and water curtain outer wall disclosed by the present invention includes an evaporative cooling air conditioner unit connected through a pipe network, a room terminal device, a countercurrent heat exchanger, a cold storage water tank, and a water curtain outer wall module. The present invention is based on the cold storage air-conditioning device combined with evaporative cooling and the outer wall of the water curtain. During the day, the water circulation in the outer wall of the water curtain can take away the solar radiation heat on the surface of the building and reduce the cooling load formed by the heat transfer of the outer enclosure structure; , the system can make full use of the favorable weather conditions at night for cold storage, and store the water with a lower temperature in the underground cold storage tank for use during the day; use the cold air produced to ventilate the room to cool down and store cold, which can delay the next day The cooling time for the room has the characteristics of energy saving, environmental protection and economy.

Description

Cold Storage Air Conditioning Device Based on Combination of Evaporative Cooling and Water Curtain Exterior Wall

technical field

The invention belongs to the technical field of air-conditioning and refrigeration equipment, and relates to a cold-storage air-conditioning device combining evaporative cooling and a water-curtain-type outer wall.

Background technique

Many high-end buildings use glass curtain wall as the outer protective structure. In summer, when the sun shines on the curtain wall, part of the solar radiation is reflected, part of it directly enters the room through the glass curtain wall, and part of it is absorbed, and the absorbed part is converted into heat waves. The way of radiation to the indoor and outdoor respectively, which makes the cooling load in the building due to solar heat gain is very large, which in turn causes a large increase in air conditioning energy consumption.

In addition, due to the high pressure on the urban power grid during the day, and the high electricity price during the day, the operating cost of the air-conditioning system is high; while the electricity is at a low point at night, the electricity price is relatively low. In response to this phenomenon, if the unit is turned on when the power is low at night, the cold energy produced is stored for use during the day, which will help relieve the pressure on the power grid and save operating costs.

Moreover, in hot weather in summer, after the air-conditioning system has finished operating for a day, the outdoor temperature is still high, and the heat is transmitted into the room through the enclosure structure, resulting in a large amount of residual heat in the room. When the air-conditioning system runs again the next day, it is necessary to increase the cooling capacity. To eliminate this part of waste heat, energy consumption increases.

Contents of the invention

The object of the present invention is to provide a cold storage air-conditioning device based on the combination of evaporative cooling and water curtain outer wall. During the day, the water circulation in the water curtain outer wall can take away the solar radiation heat on the building surface and reduce the heat transfer of the outer enclosure structure. The cooling load formed; cold storage is carried out at night, and the prepared low-temperature water is stored in the cold storage tank for use during the day.

The technical solution adopted in the present invention is based on the combination of evaporative cooling and water curtain outer wall cold storage air conditioning device, including evaporative cooling air conditioning unit connected through the pipe network, room end device, countercurrent heat exchanger, cold storage water tank, water curtain Facade modules.

The present invention is also characterized in that:

The evaporative cooling air-conditioning unit includes an organic unit shell, fresh air inlets are arranged symmetrically on the opposite side walls of the unit shell, and an air-water directly contacting counterflow packing tower is arranged in the center of the unit shell, and the air-water directly contacts counterflow The left and right sides of the packed tower are respectively symmetrically provided with surface coolers, and a filter is arranged between the surface cooler 3 and the fresh air inlet on the same side;

The air-water directly contacts the counter-flow packed tower, including packing, and the top of the packing is provided with a water distributor and a blower in sequence, and an air supply port is set on the top wall of the unit shell corresponding to the upper part of the blower; a circulating water tank is set under the packing, and the packing An air duct is formed between the circulating water tank;

Two surface coolers, water distributors, and circulating water tanks are connected to room end devices, countercurrent heat exchangers, cold storage tanks, and water curtain exterior wall modules through pipe networks.

The air-water direct contact countercurrent packed tower is a detachable air-water direct contact countercurrent packed tower.

The pipe network structure connected between the evaporative cooling air-conditioning unit, the room terminal device, the countercurrent heat exchanger, the cold storage tank, and the water curtain outer wall module is:

The circulating water tank is connected with a water pipe G1, and the water pipe G1 is connected with the room end device and the cold storage tank through the water pipe G2 and the water pipe G4 respectively, and the room end device is connected with the water distributor through the water pipe G6 and the water pipe G3, and the water pipe G2 is provided with a valve V1, and the water pipe G6 is provided with a circulating water pump c;

The cold storage water tank is connected to the water pipe G6 through the water pipe G5, and the cold storage water tank is also connected to the water pipe Y7 through the water pipe G8;

The water outlets of the two surface coolers are respectively connected to the water pipe Y7 through the water pipe Y6, the water pipe Y5, and the multiple branch pipes on the water pipe Y7 are respectively connected to the multiple water inlets 13 in the water curtain outer wall module; the inlets of the two surface coolers The water outlets are respectively connected to the water pipe Y3 through the water pipe Y1, the water pipe Y2, the water pipe Y3 is connected to the countercurrent heat exchanger, the water pipe Y3 is connected to the water pipe Y4, and the multiple branch pipes on the water pipe Y4 are respectively connected to multiple water outlets in the outer wall module of the water curtain , the water pipe Y4 is connected to the water pipe G6 through the water pipe G7, and both ends of the water pipe Y8 are connected to the water pipe Y3.

The room terminal devices are various indoor terminals, fresh air units or combined air conditioning units; the counterflow heat exchangers are respectively connected with outlet pipes and water inlet pipes.

The cold storage water tank adopts natural layered cold storage water tank or diaphragm type cold storage tank; the cold storage water tank is buried underground; the outside of the cold storage water tank is provided with an insulation layer.

The water curtain exterior wall module is composed of multiple water curtain exterior walls;

The outer wall of the water curtain includes a glass wall, the top of the glass wall is provided with a water inlet, and the bottom of the glass wall is provided with a water outlet;

The glass wall is composed of an outer glass layer, an inner glass layer and an enclosure glass layer, the outer glass layer and the inner glass layer are arranged in parallel, and a water sandwich layer is formed between the outer glass layer and the inner glass layer.

A plurality of deflectors are arranged in the interlayer, and the plurality of deflectors are connected sequentially from top to bottom and arranged in a reciprocating folding manner. The end of each deflector is provided with a leaking hole.

The water pipe G1 is provided with a valve V6; the water pipe G4 is provided with a valve V7; the water pipe G5 is provided with a valve V2; the water pipe G6 is provided with a valve V9; the water pipe G7 is provided with a valve V5; Water pump b11 and valve V4.

The water pipe Y3 is provided with a valve V3; the water pipe Y4 is provided with multiple branch pipes; the water pipe Y7 is provided with a circulating water pump a10; the water pipe Y8 is provided with a valve V8.

The beneficial effects of the present invention are:

1) In the cold storage air-conditioning device of the present invention, the outer wall of the water curtain is made modular, which not only can play the aesthetic effect of the traditional glass curtain wall, but also can improve the heat preservation and heat insulation performance of the building.

2) In the cold storage air-conditioning device of the present invention, the water in the outer wall of the water curtain flows down slowly along the deflector, which can reduce the cooling load formed by heat transfer on the outer wall of the building; The solar energy absorbed by the wall provides domestic hot water to users.

3) The wet bulb temperature is low at night, and the temperature difference between dry and wet bulbs is large. Turning on the evaporative cooling air-conditioning unit in the cold storage air-conditioning device of the present invention at night can improve the cooling efficiency; and the deflector can make the water and the surrounding environment fully Radiation heat exchange, the lower temperature water enters the evaporative cooling air conditioning unit for refrigeration, so that the outlet water temperature of the evaporative cooling air conditioning unit is very low, and the cold storage capacity is large.

4) In the cold storage air-conditioning device of the present invention, the evaporative cooling air-conditioning unit has a simple structure, and the air-water counterflow packing can be disassembled, which facilitates ventilation of the room in transitional seasons.

5) In the cold storage air-conditioning device of the present invention, the outer wall of the water curtain is combined with the evaporative cooling air-conditioning unit, and the cold energy stored at night is used for cooling during the day, which can alleviate the shortage of power consumption during the day, and has the characteristics of energy saving and economy.

6) Adopting the cold storage air-conditioning device of the present invention to ventilate and cool the air-conditioning area at night to store cold, which helps to delay the cooling time of the next day and reduce the energy consumption of the air conditioner.

Description of drawings

Fig. 1 is a schematic structural view of the cold storage air conditioner of the present invention.

Fig. 2 is a schematic structural view of the outer wall of the water curtain in the cold storage air-conditioning device of the present invention.

In the figure, 1. Fresh air inlet, 2. Filter, 3. Surface cooler, 4. Circulating water tank, 5. Filler, 6. Water distributor, 7. Blower fan, 8. Leakage hole, 9. Deflector, 10 .Circulating water pump a, 11. Circulating water pump b, 12. Circulating water pump c, 13. Water inlet, 14. Water outlet, 15. Outer glass layer, 16. Water sandwich layer, 17. Inner glass layer, A. Evaporative cooling air conditioner Unit, B. Room end device, C. Counterflow heat exchanger, D. Cold storage tank, E. Water curtain exterior wall module.

detailed description

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

The present invention is based on a cold storage air conditioner combined with evaporative cooling and water curtain outer wall. Its structure is shown in Fig. Water tank D and water curtain wall module E.

The evaporative cooling air conditioner unit A includes an organic unit shell, fresh air inlets 1 are symmetrically arranged on the opposite side walls of the unit shell, and an air-water directly contacting counterflow packing tower is arranged in the center of the unit shell, and the air-water directly A surface cooler 3 is arranged symmetrically on the left and right sides of the contact counterflow packed tower, and a filter 2 is arranged between the surface cooler 3 and the fresh air inlet 1 on the same side; the air-water directly contacts the counterflow packed tower, including There is a packing 5, and above the packing 5, a water distributor 6 and a blower 7 are arranged in turn, and an air supply port is arranged on the top wall of the unit casing corresponding to the upper part of the blower 7; a circulating water tank 4 is set under the packing 5, and the packing 5 and the circulating water tank 4 form air duct between.

The two surface coolers 3, the water distributor 6, and the circulating water tank 4 are connected to the room end device B, the countercurrent heat exchanger C, the cold storage tank D, and the water curtain outer wall module E through the pipe network.

The air-water direct contact countercurrent packed tower is a detachable air-water direct contact countercurrent packed tower.

The pipe network structure between the evaporative cooling air-conditioning unit A, the room terminal device B, the countercurrent heat exchanger C, the cold storage tank D, and the water curtain outer wall module E is as follows:

The circulating water tank 4 in the evaporative cooling air-conditioning unit A is connected to the water pipe G1, and the water pipe G1 is respectively connected to the water pipe G2 and the water pipe G4. The water pipe G2 is connected to the valve V1, the room terminal device B and the circulating water pump c12 in sequence according to the water flow direction, and the water pipe G2 is in turn The water pipe G6 and the water pipe G3 are connected to the water distributor 6 in the evaporative cooling air-conditioning unit A, and the water pipe G4 is connected to the cold storage tank D;

The cold storage water tank D is connected to the water pipe G6 through the water pipe G5, and the cold storage water tank D is also connected to the water pipe Y7 through the water pipe G8;

The water outlets of the two surface coolers 3 are respectively connected to the water pipe Y7 through the water pipe Y6, the water pipe Y5, and the multiple branch pipes on the water pipe Y7 are respectively connected to the multiple water inlets 13 in the water curtain outer wall module E. The two surface coolers The water inlet of 3 is connected to the water pipe Y3 through the water pipe Y1, the water pipe Y2, the water pipe Y3 is connected to the countercurrent heat exchanger C, the water pipe Y3 is connected to the water pipe Y4, and the multiple branch pipes on the water pipe Y4 are respectively connected to the water curtain outer wall module E. The multiple water outlets 14 are connected; the water pipe Y4 is connected to the water pipe G6 through the water pipe G7, and both ends of the water pipe Y8 are connected to the water pipe Y3.

The terminal device B of the air-conditioned room can be various indoor terminals, fresh air units or combined air-conditioning units.

The countercurrent heat exchanger C is respectively connected with an outlet pipe and an inlet pipe.

The cold storage water tank D can be buried underground, and there are insulation measures on the outside; the cold storage water tank D can adopt a natural layered cold storage water tank or a diaphragm type cold storage tank.

Water curtain exterior wall module E is made up of many water curtain exterior walls; As shown in Figure 2, water curtain exterior wall comprises glass wall, and the top of glass wall is provided with water inlet 13, and the bottom of glass wall is provided with Water outlet 14; The glass wall is made up of outer glass layer 15, inner glass layer 17 and enclosing glass layer, and outer glass layer 15 and inner glass layer 17 are arranged in parallel, and a sandwich is formed between outer glass layer 15 and inner glass layer 17. Water layer 16; multiple deflectors 9 are arranged in the water layer 16, and multiple deflectors 9 are connected sequentially from top to bottom and arranged in a reciprocating folding manner. The end of each deflector 9 is provided with a leaking hole 8 . The water curtain exterior wall module E can not only play the aesthetic role of the traditional glass curtain wall, but also improve the thermal insulation and heat insulation performance of the building.

The water pipe G1 is provided with a valve V6, the water pipe G4 is provided with a valve V7; the water pipe G5 is provided with a valve V2; the water pipe G6 is provided with a valve V9; the water pipe G7 is provided with a valve V5; Water pump b11 and valve V4.

The water pipe Y3 is provided with a valve V3; the water pipe Y4 is provided with multiple branch pipes; the water pipe Y7 is provided with a circulating water pump a10; the water pipe Y8 is provided with a valve V8.

The working process of the cold storage air conditioner of the present invention includes a cold storage process and a cold release process:

1) Cold storage process:

When storing cold at night, as shown in Figure 1, open valve V4, valve V5, valve V6, valve V7, valve V8, valve V9, close valve V1, valve V2, valve V3, open circulating water pump a10, circulating water pump b11, and close the circulation Water pump c12; the water in the multiple water curtain walls in the water curtain wall module E slowly flows down along the deflector 9, and conducts sufficient radiation heat exchange with the surrounding environment. After being cooled, part of the water flows along the water pipe Y4, water pipe Y8, water pipe Y1, and water pipe Y2 enter the surface cooler 3 on both sides of the unit shell to pre-cool fresh air, and then return to the water curtain outer wall module E along the water pipe Y5, water pipe Y6, and water pipe Y7; the other part of the water flows along the water pipe Y4 and water pipe G7 The water pipe G3 enters the evaporative cooling air-conditioning unit A and is sent to the water distributor 6 for spraying; the pre-cooled fresh air exchanges heat and moisture with the water film on the packing 5 in the air-water direct contact counterflow packing tower, and finally Reduce the circulating water temperature to close to the dew point temperature of the outdoor air, and store the cold energy in the cold storage tank D through the water pipes G1 and G4; at the same time, the outdoor fresh air with reduced temperature is sent into the air-conditioned room by the blower 7, and the air-conditioned room is ventilated to cool down and store cold .

2) Cooling process:

a. During the transitional season, remove the air-water direct contact countercurrent packing tower from the evaporative cooling air conditioning unit A;

Open valve V1, valve V2, valve V3, valve V7, close valve V4, valve V5, valve V6, valve V8, valve V9, open circulating water pump a10, circulating water pump c12, close circulating water pump b11;

During the daytime, the water circulation in the water curtain exterior wall module E can take away the solar radiation heat on the building surface, and the water with higher temperature enters the countercurrent heat exchanger C along the water pipe Y4, and after the heat exchange temperature is lowered, it flows along the water pipe Y3 and water pipe Y1. , the water pipe Y2 leads into the two surface coolers 3 for precooling fresh air; the outdoor fresh air is purified by the filter 2 and the surface cooler 3, and then sent to the room by the blower 7 to cool down the air-conditioned room; at the same time, the cold storage tank D Under the action of the circulating water pump c12, the cold water is sent to the end device B of the room along the water pipe G4 and the water pipe G2, such as the fan coil unit, to take away the residual heat and humidity of the room, and then returns to the cold storage tank D along the water pipe G5.

b. When the summer is hot and high temperature, when the cooling capacity stored in the cold storage tank D cannot meet the cooling demand, turn on the circulating water pump a10, circulating water pump c12, turn off the circulating water pump b11; open valve V1, valve V2, valve V3, valve V6, Valve V7, valve V9, close valve V4, valve V5, valve V8. During the daytime, the water circulation in the water curtain exterior wall module E can take away the solar radiation heat on the building surface, and the water with higher temperature enters the countercurrent heat exchanger C along the water pipe Y4, and after the heat exchange temperature is lowered, it flows along the water pipe Y3 and water pipe Y1. , the water pipe Y2 leads to the precooling fresh air in the surface cooler 3; the outdoor fresh air is purified by the filter 2 and the surface cooler 3, and after precooling treatment, it exchanges heat and moisture with the water film on the air-water direct contact countercurrent packed tower to make the evaporation The outlet water temperature of the cooling air-conditioning unit A is close to the dew point temperature of the outdoor air; adjust valves V6 and V7 so that the cold water produced by the evaporative cooling air-conditioning unit A and the water in the cold storage tank D are mixed in a certain proportion, and then circulated by the circulating water pump along the water pipe G2 c12 sends air-conditioning room terminal device B to take away the residual heat and humidity in the room; adjust valves V2 and V9 so that part of the return water returns to the cold storage tank D along the water pipe G5, and the other part reaches the water distributor 6 along the water pipe G6 and G3 for spraying , the return water temperature is lower, which can make the evaporative cooling air-conditioning unit A have a better cooling effect; the cold air produced by the evaporative cooling air-conditioning unit A is sent to the air-conditioned room by the blower 7 to take away the waste heat in the room.

The present invention is based on a cold storage air conditioner combined with evaporative cooling and water curtain outer wall. During the day, the water circulation in the water curtain outer wall can take away the solar radiation heat on the building surface and reduce the cooling load caused by the heat transfer of the outer enclosure structure. At night, the system can make full use of the favorable weather conditions at night for cold storage, and store the water with a lower temperature in the underground cold storage tank for use during the day. Using the cold air produced to ventilate the room to cool down and store cold can delay the time for cooling the room the next day, which has the characteristics of energy saving, environmental protection and economy.

Claims (4)

1. The cold storage air-conditioning device based on the combination of evaporative cooling and water curtain outer wall, which is characterized in that it includes an evaporative cooling air-conditioning unit (A), a room terminal device (B), and a counterflow heat exchanger (C) connected through a pipe network , cold storage tank (D), water curtain exterior wall module (E); The evaporative cooling air conditioner unit (A) includes an organic unit casing, fresh air inlets (1) are arranged symmetrically on the opposite side walls of the unit casing, and an air-water direct air inlet (1) is arranged in the center of the unit casing. In contact with the counter-flow packed tower, the air-water directly contacts the left and right sides of the counter-flow packed tower with surface coolers (3) symmetrically arranged respectively. ) is provided with a filter (2); The air-water directly contacts the counterflow packed tower, including packing (5), and the top of the packing (5) is sequentially provided with a water distributor (6) and a blower (7), and the upper part of the blower (7) corresponds to An air outlet is provided on the top wall of the casing of the unit; a circulating water tank (4) is provided under the packing (5), and an air duct is formed between the packing (5) and the circulating water tank (4); The two surface coolers (3), the water distributor (6), and the circulating water tank (4) communicate with the room end device (B), the countercurrent heat exchanger (C), the cold storage tank (D), and the water curtain through the pipe network. External wall module (E) connection; The air-water direct contact countercurrent packed tower is a detachable air-water direct contact countercurrent packed tower; The pipe network structure connected among the evaporative cooling air-conditioning unit (A), the room terminal device (B), the countercurrent heat exchanger (C), the cold storage tank (D), and the water curtain outer wall module (E) is: The circulating water tank (4) is connected with a water pipe G1, and the water pipe G1 is connected with the room end device (B) and the cold storage tank (D) through the water pipe G2 and the water pipe G4 respectively, and the room end device (B) is connected through the water pipe G6, the water pipe G3 is connected to the water distributor (6), the water pipe G2 is provided with a valve V1, and the water pipe G6 is provided with a circulating water pump c (12); The cold storage water tank (D) is connected to the water pipe G6 through the water pipe G5, and the cold storage water tank (D) is also connected to the water pipe Y7 through the water pipe G8; The water outlets of the two surface coolers (3) are respectively connected to the water pipe Y7 through the water pipe Y6, the water pipe Y5, and the multiple branch pipes on the water pipe Y7 are respectively connected to the multiple water inlets in the water curtain outer wall module (E) (13) connection; the water inlets of the two surface coolers (3) are connected to the water pipe Y3 through the water pipe Y1 and the water pipe Y2 respectively, the water pipe Y3 is connected to the countercurrent heat exchanger (C), and the water pipe Y3 is connected to the water pipe Y4 is connected, and a plurality of branch pipes on the water pipe Y4 are respectively connected with a plurality of water outlets (14) in the water curtain outer wall module (E), and the water pipe Y4 is connected with the water pipe G6 through the water pipe G7, and the two ends of the water pipe Y8 Both are connected with the water pipe Y3; The room terminal device (B) is a variety of indoor terminals, fresh air units or combined air-conditioning units; the counterflow heat exchanger (C) is respectively connected with an outlet pipe and an inlet pipe; The cold storage tank (D) adopts a natural layered cold storage tank or a diaphragm type cold storage tank; the cold storage tank (D) is buried underground; an insulation layer is provided outside the cold storage tank (D); The water curtain exterior wall module (E) is made up of a plurality of water curtain exterior walls; The outer wall of the water curtain includes a glass wall, the top of the glass wall is provided with a water inlet (13), and the bottom of the glass wall is provided with a water outlet (14); The glass wall is composed of an outer glass layer (15), an inner glass layer (17) and an enclosure glass layer, the outer glass layer (15) and the inner glass layer (17) are arranged in parallel, and the outer glass layer A water trap (16) is formed between the layer (15) and the inner glass layer (17). 2. The cold storage air-conditioning device according to claim 1, characterized in that a plurality of deflectors (9) are arranged in the water interlayer (16), and the plurality of deflectors (9) are sequentially arranged from top to bottom connected and arranged in a reciprocating and folding manner, and the end of each deflector (9) is provided with a water leakage hole (8). 3. The cold storage air conditioner according to claim 1, characterized in that, the water pipe G1 is provided with a valve V6; the water pipe G4 is provided with a valve V7; the water pipe G5 is provided with a valve V2; the water pipe G5 is provided with a valve V2; G6 is provided with a valve V9; the water pipe G7 is provided with a valve V5; and the water pipe G8 is provided with a circulating water pump b (11) and a valve V4 in sequence according to the direction of water flow. 4. The cold storage air conditioner according to claim 1, characterized in that, the water pipe Y3 is provided with a valve V3; the water pipe Y4 is provided with a plurality of branch pipes; the water pipe Y7 is provided with a circulating water pump a (10 ); said water pipe Y8 is provided with a valve V8.