CN107990454B - An energy-saving air conditioning system utilizing natural cold source - Google Patents

Abstract

An energy-saving air conditioning system using a natural cold source comprises a heat exchanger and a cold using terminal, wherein refrigerant water in the heat exchanger flows out from a refrigerant water outlet and then is connected with the cold using terminal through a refrigerant water outflow pipe, the temperature of the refrigerant water is increased after the refrigerant water absorbs heat of a cold using room, the refrigerant water flows out from the cold using terminal and then is connected with a refrigerant water inlet of the heat exchanger through a refrigerant water inflow pipe, and therefore a refrigerant water circulation loop is formed between the cold using terminal and the heat exchanger; and a cooling water inlet of the heat exchanger and a cooling water outlet of the heat exchanger are connected with a cooling water circulating pipeline for providing cooling water for the heat exchanger, and the cooling water circulating pipeline is connected with a cooling tower cooling system, a fire water cooling system, a production and living water cooling system and/or an underground water cooling system. The invention fully utilizes the natural cold source in the factory, further shortens the starting time of the refrigerator, and saves a large amount of electric energy, thereby realizing the purposes of utilizing the natural cold source to cool the production area, reducing the power consumption and reducing the pollution.

Description

An energy-saving air conditioning system utilizing natural cold source

technical field

The invention belongs to the field of industrial refrigeration equipment, and in particular relates to an energy-saving air conditioning system utilizing a natural cold source.

Background technique

In the production area and office area of the factory, sometimes the indoor temperature is still high during the daytime in excessive seasons such as spring and autumn, but if the central air-conditioning system turns on the refrigerator to cool down, because the power of the refrigerator is very large, turning on the refrigerator will consume a lot of electricity. The high indoor temperature of the refrigerator affects the comfort of the staff. How to provide a stable cold source for the factory area under the condition of reducing power consumption, so as to ensure the cooling temperature of the production area and office area, is a problem to be solved at present. Generally, cooling towers are built in the factory area, and the Fire-fighting pools and production and living pools have a large capacity. These are natural cold sources, and there is no use case for these cold sources in the existing technology. Therefore, how to use natural cold sources to cool the production area and office area in the factory? At the same time, it can reduce power consumption and reduce pollution, which has become a problem to be solved at present.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention proposes an energy-saving air-conditioning system that utilizes a natural cold source. The present invention uses a cooling tower to cool down the cooling water in excessive seasons, and then transfers the cold energy to the refrigerant water through the heat exchanger and delivers it to the cooling water. As the outdoor temperature rises, if the cooling tower can no longer meet the cooling demand, due to the large capacity of the fire pool and the production and living pools in the factory, the underground fire pool built in the factory and the tap water in the production and living pools are used to supply the refrigerant. Water cooling, that is, transferring the coldness of the tap water to the refrigerant water to reduce the temperature of the workshop or production area. If there are sufficient groundwater resources in some cities, because the groundwater temperature is relatively low, the cooling capacity of the groundwater can also be used to reduce the temperature of the refrigerant water to cool the room. In this way, the natural cold source in the factory can be fully utilized, the start-up time of the chiller can be further shortened, and a large amount of electric energy can be saved, thereby realizing the purpose of using the natural cold source to cool the production area, reducing power consumption and reducing pollution.

To achieve the above object, the technical scheme adopted in the present invention is:

An energy-saving air-conditioning system utilizing a natural cold source, including a heat exchanger and a cooling terminal, the refrigerant water in the heat exchanger flows out from the refrigerant water outlet and is connected to the cooling terminal through the refrigerant water outflow pipe, and the cooling room is used for absorbing the refrigerant water. The temperature rises after the heat is generated, and the refrigerant water flows out from the cooling terminal and is connected to the refrigerant water inlet of the heat exchanger through the refrigerant water inflow pipe, thereby forming a refrigerant water circulation loop between the cooling terminal and the heat exchanger; The cooling water inlet and the cooling water outlet of the heat exchanger are connected with a cooling water circulation pipeline that provides cooling water for the heat exchanger, and the cooling water circulation pipeline is connected with a cooling tower cooling system, a fire water cooling system, a production and living water cooling system and / or groundwater cooling system.

Preferably, the cooling tower cooling system includes a first cooling tower, the cooling water outlet of the heat exchanger is connected to the cooling tower water inlet of the first cooling tower through the cooling water outlet pipe, and the first cooling tower outlet of the first cooling tower The water outlet is connected with the cooling water inlet of the heat exchanger through the cooling water inlet pipe, the cooling water outlet pipe is equipped with a valve, and the cooling water inlet pipe is equipped with a valve and a water pump.

Preferably, the cooling tower cooling system further includes a second cooling tower, the second cooling tower water outlet of the first cooling tower is connected to the cooling tower water inlet of the second cooling tower through a first cooling pipe, and the first cooling tower The pipe is equipped with a valve and a water pump, and the cooling tower water outlet of the second cooling tower is connected with the cooling water inlet pipe of the heat exchanger through the second cooling pipe to realize the connection with the cooling water inlet of the heat exchanger.

Preferably, the fire-fighting water cooling system includes a fire-fighting water tank, a fire-fighting water inlet pipe and a fire-fighting water outlet pipe. One end of the fire-fighting water inlet pipe is connected to the cooling water outlet of the heat exchanger, and the other end is connected to the water inlet of the fire-fighting water tank. The fire inlet pipe is equipped with a valve; one end of the fire outlet pipe is connected with the water outlet of the fire pool, and the other end is connected with the cooling water inlet of the heat exchanger. The fire outlet pipe is equipped with a valve and a water pump.

Preferably, the production and domestic water cooling system includes a production and domestic water pool, a production water inlet pipe, and a production water outlet pipe, one end of the production water inlet pipe is connected to the cooling water outlet of the heat exchanger, and the other end is connected to the production and domestic water pool inlet. The water outlet is connected, and the production water inlet pipe is equipped with a valve; one end of the production water outlet pipe is connected with the cooling water inlet of the heat exchanger, and the other end is connected with the water outlet of the production and living pool, and the production water outlet pipe is equipped with a valve. Valves and pumps.

Preferably, both the fire fighting pool and the production and living pools are provided with water supply pipes connected to the municipal water source.

Preferably, the groundwater cooling system includes a water outlet well, a water well outlet pipe, a water inlet well and a water well inlet pipe. The water well is connected with the cooling water outlet of the heat exchanger through the water well inlet pipe, and the water well inlet pipe is provided with a valve.

Preferably, the cooling terminal is also connected with a refrigerator cooling system, the refrigerator cooling system includes a refrigerator, and the refrigerant water in the refrigerator flows out from the refrigerant water outlet of the refrigerator and passes through the refrigerant water outflow pipe of the refrigerator and the refrigerator. The terminal is connected, and the temperature of the refrigerant water increases after absorbing the heat of the cooling room. The refrigerant water flows out from the cooling terminal and passes through the refrigerant water inflow pipe of the refrigerator to connect with the refrigerator refrigerant water inlet of the refrigerator, so that the cooling terminal and the refrigerator are connected. A refrigerant water circulation loop is formed between them, and valves are provided on both the refrigerant water inflow pipe of the refrigerator and the refrigerant water outflow pipe of the refrigerator.

Preferably, there is a cooling circuit between the refrigerator and the first cooling tower for radiating and cooling the refrigerator, and the cooling circuit includes cooling water for the refrigerator connecting the cooling water outlet of the refrigerator and the water inlet of the cooling tower of the first cooling tower A water outlet pipe, and a refrigerator cooling water inlet pipe connecting the cooling water inlet of the refrigerator and the cooling tower water outlet of the first cooling tower, the cooling water outlet pipe of the refrigerator and the cooling water inlet pipe of the refrigerator are equipped with valves.

Beneficial effects of the present invention: the present invention adopts the first cooling tower to cool down the cooling water in excessive seasons, and then transfers the cooling capacity to the cooling medium water through the heat exchanger and transports it to the cooling room. Due to the water saturation of the air, the first cooling tower single In the case of limited cooling, two cooling towers can be connected in series, that is, the second cooling tower is connected in series at the back of the first cooling tower to further reduce the temperature of the refrigerant water; as the outdoor temperature increases, if the cooling tower When the cooling can no longer meet the cooling demand, cool the refrigerant water through the underground fire pool built by the factory and the tap water in the production and living pools, that is, transfer the coldness of the tap water to the refrigerant water to reduce the temperature of the cooling room; finally, due to the sufficient groundwater resources , and the groundwater temperature is relatively low in summer, the cooling capacity of the groundwater is used to reduce the temperature of the refrigerant water to send cooling to the room; in this way, the natural cold source in the factory can be fully utilized. When the purpose of cooling the factory area, turn on the refrigerator, further shorten the start-up time of the refrigerator, save a lot of electric energy, so as to achieve the purpose of using natural cold source to cool the production area, reducing power consumption and reducing pollution.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

See Figure 1. The direction of the arrow in Figure 1 is the running direction of the fluid in the pipeline. It should be noted that the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the implementation of the present invention. Restricted conditions, it does not have technical substantive significance, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should fall within the scope of the present invention. The scope of the disclosed technical content can be covered. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this specification. The implementable scope of the invention, and the change or adjustment of the relative relationship thereof, shall also be regarded as the implementable scope of the present invention without substantially changing the technical content.

An energy-saving air-conditioning system utilizing a natural cold source includes a heat exchanger 42 and a cooling terminal 24, and the refrigerant water in the heat exchanger 42 flows out from the refrigerant water outlet 421 and is connected to the cooling terminal 24 through the refrigerant water outflow pipe 43, After the refrigerant water absorbs the heat of the cooling terminal 24, the temperature rises, and the refrigerant water flows out from the cooling terminal 24 and is connected to the refrigerant water inlet 422 of the heat exchanger 42 through the refrigerant water inflow pipe 44, thereby connecting the cooling terminal 24 and the heat exchange. A refrigerant water circulation loop is formed between the heat exchangers 42; the cooling water inlet 423 of the heat exchanger 42 and the cooling water outlet 424 of the heat exchanger 42 are connected with a cooling water circulation pipeline that provides cooling water to the heat exchanger 42, and the cooling water circulation pipeline is connected with Cooling tower cooling systems, fire water cooling systems, production and domestic water cooling systems and/or groundwater cooling systems.

The cooling tower cooling system includes the first cooling tower 16. The cooling water outlet 424 of the heat exchanger 42 is connected to the cooling tower water inlet of the first cooling tower 16 through the cooling water outlet pipe 38. The first cooling tower of the first cooling tower 16 The water outlet 161 is connected to the cooling water inlet 423 of the heat exchanger 42 through the cooling water inlet pipe 39 . The cooling water outlet pipe 38 is equipped with a valve, and the cooling water inlet pipe 39 is equipped with a valve and a water pump. In this embodiment, the cooling water outlet pipe 38 is sequentially equipped with a stop valve 41 and a stop valve 7 along the direction of the water flow. The cooling water inlet pipe 38 is sequentially equipped with a stop valve 80 , a stop valve 13 , a water pump 12 , a check valve 11 , a stop valve 10 , a stop valve 6 and a stop valve 40 along the water flow direction.

The cooling tower cooling system also includes a second cooling tower 22, the second cooling tower water outlet 162 of the first cooling tower 21 is connected to the cooling tower water inlet of the second cooling tower 22 through the first cooling pipe 21, and the first cooling pipe 21 A valve and a water pump are arranged on it. In this embodiment, the first cooling pipe 21 is provided with a stop valve 17, a water pump 18, a check valve 19 and a stop valve 20 in order along the direction of the water flow. The cooling tower of the second cooling tower 22 The water outlet is connected with the cooling water inlet pipe 39 of the heat exchanger 42 through the second cooling pipe 23 to realize the connection with the cooling water inlet 423 of the heat exchanger 42 .

The fire-fighting water cooling system includes a fire-fighting pool 79, a fire-fighting water inlet pipe 32 and a fire-fighting water outlet pipe 33. One end of the fire-fighting water inlet pipe 32 is connected to the cooling water outlet 424 of the heat exchanger 42. In this embodiment, one end of the fire-fighting water inlet pipe 32 is connected to The cooling water outlet pipe 38 is connected to realize the connection with the cooling water outlet 424, and the other end is connected with the water inlet of the fire fighting pool. The fire fighting water inlet pipe 32 is equipped with a valve. One end of the water outlet pipe 33 is connected to the water outlet of the fire fighting pool, and the other end is connected to the cooling water inlet 423 of the heat exchanger 42. In this embodiment, the fire water outlet pipe 33 is connected to the cooling water inlet pipe 39 to achieve cooling with the heat exchanger 42. The water inlet 423 is connected, and the fire outlet pipe 33 is equipped with a valve and a water pump. In this embodiment, the fire outlet pipe 33 is equipped with a stop valve 47, a water pump 48, a check valve 49 and a stop valve 50 along the direction of the water flow. .

The production and living water cooling system includes a production and living water pool 60, a production water inlet pipe 76, and a production water outlet pipe 59. One end of the production water inlet pipe 76 is connected to the cooling water outlet 424 of the heat exchanger 42. In this embodiment, the production water inlet One end of the water pipe 76 is connected to the fire-fighting water inlet pipe 32 to be connected to the cooling water outlet 424 of the heat exchanger 42, and the other end is connected to the water inlet of the production and living pool. The production water inlet pipe 76 is equipped with a valve. The production water inlet pipe 76 is provided with a stop valve 73; one end of the production water outlet pipe 59 is connected to the cooling water inlet 423 of the heat exchanger 42, and one end of the production water outlet pipe 59 is connected to the fire outlet pipe 33 in this embodiment. It is realized that it is connected with the cooling water inlet 423 of the heat exchanger 42, and the other end is connected with the water outlet of the production and living pool. The production water outlet pipe 59 is equipped with a valve and a water pump. In this embodiment, the production water outlet pipe 59 follows the A stop valve 81 , a stop valve 54 , a water pump 53 , a check valve 52 and a stop valve 51 are arranged in sequence in the direction of the water flow. In this embodiment, the production and living water pool 60 is also connected to the water point 66 in the factory through a water pipe 65, and the water pipe 65 is sequentially equipped with a stop valve 61, a water pump 62, a check valve 63 and a stop valve along the water flow direction. valve 64.

The fire fighting pool 79 and the production and living pool 60 are both provided with a water supply pipe connected to the municipal water source 70, and the water supply pipe is provided with a valve. And the second water supply pipe 72 is provided with a stop valve 71 and a stop valve 74 in turn along the direction of the water flow. The fire fighting pool 79 is connected to the second water supply pipe 72 through the first water supply pipe 75 and then connected to the municipal water source 70. A stop valve 77 is provided on the water supply pipe 75 .

The groundwater cooling system includes a water outlet well 58, a water well outlet pipe 56, a water inlet well 67 and a water well inlet pipe 69. The water outlet well 58 is connected to the cooling water inlet 423 of the heat exchanger 42 through the water well outlet pipe 56, and the water well outlet pipe 56 is equipped with There are valves. In this embodiment, the water well outlet pipe 56 is connected to the production water outlet pipe 59 and then connected to the cooling water inlet 423 of the heat exchanger 42. The water well outlet pipe 56 is provided with a stop valve 57; the water inlet well 67 passes through The water well inlet pipe 69 is connected to the cooling water outlet 424 of the heat exchanger 42, and the water well inlet pipe 69 is provided with a valve. In this embodiment, the water well inlet pipe 69 is connected to the production water inlet pipe 76 to achieve cooling with the heat exchanger 42. The water outlet 424 is connected, and a shut-off valve 68 is provided on the water inlet pipe 69 of the well.

The cooling terminal is also connected with a refrigerator cooling system. The cooling system of the refrigerator includes a refrigerator 1. The refrigerant water in the refrigerator 1 flows out from the refrigerant water outlet 101 of the refrigerator and is connected to the cooling terminal 24 through the refrigerant water outflow pipe 30 of the refrigerator. The temperature of the refrigerant water rises after absorbing the heat of the cooling room 24, and the refrigerant water flows out from the cooling terminal 24 through the refrigerator refrigerant water inflow pipe 31 and is connected to the refrigerator refrigerant water inlet 102 of the refrigerator, so that the cooling medium water flows out from the cooling terminal 24. A refrigerant water circulation loop is formed between the refrigerator 1 and the refrigerator refrigerant water inflow pipe 31 and the refrigerator refrigerant water outflow pipe 30 are equipped with valves. In this embodiment, the refrigerator refrigerant water outflow pipe 30 is connected to the heat exchanger 42. The refrigerant water outflow pipe 43 is connected with the cooling terminal 24, the refrigerant water outflow pipe 30 of the refrigerator is provided with a stop valve 34, and the refrigerant water inflow pipe 31 of the refrigerator is connected to the refrigerant water inflow pipe 44 of the heat exchanger 42 to realize the connection with the refrigerant water inflow pipe 44 of the heat exchanger 42. The rooms are connected, and a shut-off valve 35 is arranged on the refrigerant water inflow pipe 31 of the refrigerator.

There is a cooling circuit between the refrigerator 1 and the first cooling tower 16 for radiating and cooling the refrigerator 1. The cooling circuit includes the cooling water of the refrigerator connecting the cooling water outlet 103 of the refrigerator and the cooling tower water inlet of the first cooling tower 16 The water outlet pipe 5, and the refrigerator cooling water inlet pipe 4 connecting the cooling water inlet 104 of the refrigerator and the cooling tower water outlet of the first cooling tower 16, the cooling water outlet pipe 5 of the refrigerator and the cooling water inlet pipe 4 of the refrigerator are equipped with A valve is provided. In this embodiment, the cooling water outlet pipe 5 of the refrigerator is connected to the cooling water outlet pipe 38 of the heat exchanger 42 to realize connection with the cooling tower water inlet of the first cooling tower 16, and the cooling water outlet pipe 5 of the refrigerator is provided. A cut-off valve 3 is provided on the top; the cooling water inlet pipe 4 of the refrigerator is connected to the cooling water inlet pipe 39 of the heat exchanger 42 to realize the connection with the cooling tower water outlet of the first cooling tower 16 .

During the specific work, in the excessive season, when the temperature is high but not as high as summer, in order to ensure indoor comfort, after the cooling water cools the refrigerant water through the heat exchanger 42, the temperature of the cooling water rises and flows out from the cooling water outlet 424 After that, it enters the first cooling tower 16 for cooling through the cut-off valve 41, the cooling water outlet pipe 38 and the cut-off valve 7, and the cooled cooling water flows out from the first cooling tower water outlet 161 of the first cooling tower 16 and enters the cooling water inlet pipe 39, After passing through the cut-off valve 80, the cut-off valve 13, the water pump 12, the check valve 11, the cut-off valve 10, the cut-off valve 6 and the cut-off valve 40, it enters the heat exchanger 42 from the cooling water inlet 423 of the heat exchanger 42 and absorbs the heat of the refrigerant water again. After the cooling medium water is cooled, the cooling water flows back from the cooling water outlet 424 of the heat exchanger 42 into the first cooling tower 16 for cooling, and so on. The refrigerant water absorbs the cooling water from the heat exchanger 42 and flows out from the refrigerant water outlet 421 of the heat exchanger 42 into the refrigerant water outflow pipe 43, and enters the cooling terminal 24 after passing through the stop valve 46, the stop valve 36 and the stop valve 25. The heat in the air is absorbed in the cooling terminal 24, and after cooling the room, the refrigerant water enters the refrigerant water inflow pipe 44, and passes through the stop valve 26, the water pump 27, the check valve 28, the stop valve 29, the stop valve 37, and the stop valve 45. The refrigerant water inlet 422 of the heat exchanger 42 flows back into the heat exchanger 42 to absorb the cooling capacity of the cooling water, and then flows into the cooling terminal 24 to reduce the room temperature, and the refrigerant water circulates in this way. Due to the saturation of the air moisture content and the capacity of the first cooling tower 16, as the air temperature increases, if only the first cooling tower 16 cannot meet the cooling water cooling demand, the second cooling tower 22 is started and the shut-off valve 80 is closed. , the first cooling tower 16 and the second cooling tower 22 are connected in series, the cooling water flows out from the heat exchanger 42 and then enters the cooling water outlet pipe 38, enters the first cooling tower 16 to cool down through the cut-off valve 41 and the cut-off valve 7, and passes through the first cooling The cooling water cooled by the tower 16 flows out from the water outlet 162 of the second cooling tower and then enters the first cooling pipe 21, and enters the second cooling tower 22 through the stop valve 17, the water pump 18, the check valve 19, and the stop valve 20 to cool down again. The cooling water cooled again by the second cooling tower 22 enters the cooling water inlet pipe 39 through the second cooling pipe 23, and enters the cooling water inlet pipe 39 through the stop valve 13, the water pump 12, the check valve 11, the stop valve 10, the stop valve 6, and the stop valve 40. After the heat exchanger 42 reabsorbs the heat of the refrigerant water to cool the refrigerant water, the cooling water flows back from the heat exchanger 42 into the two-stage cooling tower for cooling, and the cycle is repeated.

When the temperature rises again, only the cooling of the first cooling tower 16 and the second cooling tower 22 cannot meet the cooling demand of the cooling terminal 24, because the factories, especially the large factories, have large underground fire pools and production facilities. Living pools, where the tap water temperature is relatively low. Therefore, after the water in the fire fighting pool 79 enters the fire outlet pipe 33, it can enter the cooling water inlet pipe 39 through the cut-off valve 47, the water pump 48, the check valve 49 and the cut-off valve 50, and then enter the heat exchanger 42 through the cut-off valve 40, In the heat exchanger 42, the cold energy is transferred to the refrigerant water, and the fire fighting water cools the refrigerant water and flows out from the heat exchanger 42, enters the cooling water outlet pipe 38, and then enters the fire water inlet pipe 32 through the cut-off valve 41, and the cut-off valve 78 returns Into the fire fighting pool 79, this reciprocating cycle, although the municipal water source 70 can supply water to the fire fighting pool 79 through the cut-off valve 71, the first water supply pipe 75, and the cut-off valve 77, because the fire fighting pool 79 The water volume is basically stable and seldom consumed. After a certain period of circulation, the temperature of the fire-fighting pool 79 rises, and when the cooling demand cannot be met, the water from the production and living pools 60 is used to cool down.

The tap water of the production and living water pool 60 is connected to the fire outlet pipe 33 after passing through the stop valve 81, the production water outlet pipe 59, the stop valve 54, the water pump 53, the check valve 52 and the stop valve 51, and then is connected with the cooling water inlet pipe 39, and passes through the water outlet pipe 33. The cut-off valve 40 enters the heat exchanger 42, and the tap water transfers the cold energy to the refrigerant water in the heat exchanger 42 and flows out from the heat exchanger 42, then enters the cooling water outlet pipe 38, and enters the production water inlet pipe 76 through the cut-off valve 41, The shut-off valve 73 flows back into the production and living water tank 60, and so on and so forth. Since the production and living water pool 60 supplies the production and domestic water of the whole plant, the municipal water source 70 continuously supplies water to the production and living water pool 60 through the cut-off valve 71, the second water supply pipe 72 and the cut-off valve 74, and the tap water in the production and living water pool 60 is continuously Through the stop valve 61, the water pump 62, the check valve 63, the stop valve 64, and the water pipe 65, tap water is supplied to the water point 66, and the water point 66 represents all the tap water points in the whole plant, so the tap water in the production and living pool 60 is constantly updated, It also continuously brings cold energy to the heat exchanger 42 .

When the temperature further rises and the rate of renewed tap water in the production and living pools 60 cannot meet the cooling demand of the whole plant, since the groundwater temperature is lower than the tap water temperature, in some cities with high groundwater levels and sufficient water resources, With the approval of relevant departments, groundwater can be used to continue to provide cold source for the cooling terminal 24 of the whole plant. A water well 58 is drilled at a suitable position in the factory area, and a water well 67 is drilled at another suitable position. The groundwater of the water outlet well 58 enters the production water outlet pipe 59 through the stop valve 57 and the water well outlet pipe 56, and then passes through the stop valve 54 and the water pump 53. The check valve 52 and the stop valve 51 enter the fire outlet pipe 33 and then enter the cooling water inlet pipe 39, and then enter the heat exchanger 42 through the stop valve 40 to bring cooling to the refrigerant water, and the heated groundwater flows out from the heat exchanger 42 Enter the cooling water outlet pipe 38, the cut-off valve 41, the fire-fighting water inlet pipe 32, the production water inlet pipe 76, the well water inlet pipe 69, and the shut-off valve 68 back into the water inlet well 67 and re-enter the ground, so that the reciprocating cycle uses a continuous supply of groundwater Cooling capacity, since the groundwater flows back into the ground, the groundwater level will not drop due to this.

In summer, the temperature is particularly high, and cooling through the first cooling tower 16, the second cooling tower 22, the fire fighting pool 79, the production and living pool 60 or even the cooling of the groundwater through the outlet well 58 and the inlet well 67 can no longer satisfy the cooling demand. The refrigerator 1 is turned on. After the refrigerator 1 is turned on and running, the refrigerant water flows out from the refrigerator refrigerant water outlet 101 of the refrigerator 1, and then passes through the refrigerator refrigerant water outflow pipe 30, the stop valve 3, the refrigerant water outflow pipe 43, and the stop valve 25. It is delivered to the cold terminal 24, which represents all workshops and office areas. After the refrigerant water lowers the temperature of the cooling terminal 24, the temperature of the refrigerant water rises and flows back through the shut-off valve 26, the water pump 27, the check valve 28, the shut-off valve 29, the refrigerant water inlet pipe 39, the refrigerator refrigerant water inlet pipe 31, and the shut-off valve 35. Into the refrigerator 1, the temperature is lowered by the refrigerator, and the refrigerant water absorbs the cold energy and recycles the cooling. After the cooling water absorbs the heat of the refrigerator and the temperature rises, it flows out from the refrigerator cooling water outlet 103 of the refrigerator 1 and enters the cooling water outlet pipe 5 of the refrigerator through the stop valve 3 and the cooling water outlet pipe 38 into the first cooling tower 16 through the first cooling tower 16. After the cooling tower 16 is cooled, it flows back into the refrigerator through the cooling water inlet pipe 39, the cut-off valve 80, the cut-off valve 13, the water pump 12, the check valve 11, the cut-off valve 10, the cooling water inlet pipe 4 of the refrigerator, and the cut-off valve 2. After reabsorbing the heat of the refrigerator, it enters the cooling tower to cool down, and so on.

In the present invention, the first cooling tower 16 and the second cooling tower 22 are used to cool the cooling water in excessive seasons, and then the cooling energy is transferred to the refrigerant water through the heat exchanger 42 and transported to the cooling terminal 24. As the outdoor temperature increases, If the cooling tower cooling can no longer meet the cooling demand, due to the large capacity of the fire-fighting pool 79 and the production and living pools 60 in the factory, the refrigerant water is cooled by the tap water in the underground fire-fighting pools 79 and the production and living pools 60 built by the factory, that is, to cool the refrigerant water. The cold water from the tap water is transferred to the refrigerant water to lower the temperature of the workshop or production area. If there are sufficient groundwater resources in some cities, because the groundwater temperature is relatively low, with the approval of the relevant departments, the cooling capacity of the groundwater can also be used to reduce the temperature of the refrigerant water to cool the room. In this way, the natural cold source in the factory can be fully utilized, the startup time of the refrigerator 1 can be further shortened, and a large amount of electric energy can be saved, thereby realizing the purpose of using the natural cold source to cool the production area, reducing power consumption and reducing pollution at the same time.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims (4)

1. an energy-saving air-conditioning system utilizing a natural cold source, is characterized in that: comprising a heat exchanger and a cooling terminal, the refrigerant water in the heat exchanger is connected with the cooling terminal through a refrigerant water outflow pipe after the refrigerant water outlet flows out, After the refrigerant water absorbs the heat of the cooling room, the temperature rises, and the refrigerant water flows out from the cooling terminal and is connected to the refrigerant water inlet of the heat exchanger through the refrigerant water inflow pipe, thereby forming a refrigerant water cycle between the cooling terminal and the heat exchanger. circuit; the cooling water inlet of the heat exchanger and the cooling water outlet of the heat exchanger are connected with a cooling water circulation pipeline that provides cooling water for the heat exchanger, and the cooling water circulation pipeline is connected with a cooling tower cooling system, a fire water cooling system, Production and domestic water cooling systems and/or groundwater cooling systems; The cooling tower cooling system includes a first cooling tower, the cooling water outlet of the heat exchanger is connected with the cooling tower water inlet of the first cooling tower through the cooling water outlet pipe, and the first cooling tower water outlet of the first cooling tower is cooled The water inlet pipe is connected with the cooling water inlet of the heat exchanger, the cooling water outlet pipe is provided with a valve, and the cooling water inlet pipe is provided with a valve and a water pump; The cooling tower cooling system also includes a second cooling tower, the second cooling tower water outlet of the first cooling tower is connected to the cooling tower water inlet of the second cooling tower through the first cooling pipe, and the first cooling pipe is equipped with a water inlet. A valve and a water pump are provided, and the cooling tower water outlet of the second cooling tower is connected to the cooling water inlet of the heat exchanger through the connection of the second cooling pipe with the cooling water inlet of the heat exchanger; The fire-fighting water cooling system includes a fire-fighting water pool, a fire-fighting water inlet pipe and a fire-fighting water outlet pipe. One end of the fire-fighting water inlet pipe is connected to the cooling water outlet of the heat exchanger, and the other end is connected to the fire-fighting water inlet. There is a valve on it; one end of the fire outlet pipe is connected with the outlet of the fire pool, and the other end is connected with the cooling water inlet of the heat exchanger, and the fire outlet pipe is equipped with a valve and a water pump; The production and living water cooling system includes a production and domestic water pool, a production water inlet pipe, and a production water outlet pipe. One end of the production water inlet pipe is connected to the cooling water outlet of the heat exchanger, and the other end is connected to the water inlet of the production and domestic water pool. , The production water inlet pipe is equipped with a valve; one end of the production water outlet pipe is connected with the cooling water inlet of the heat exchanger, and the other end is connected with the water outlet of the production and living pool, and the production water outlet pipe is equipped with a valve and a water pump ; The groundwater cooling system includes a water outlet well, a water well outlet pipe, a water inlet well and a water well inlet pipe, the water outlet well is connected with the cooling water inlet of the heat exchanger through the water well outlet pipe, the water well outlet pipe is equipped with a valve, and the water inlet well passes through the water well. The water inlet pipe is connected with the cooling water outlet of the heat exchanger, and the water inlet pipe of the well is equipped with a valve. 2 . The energy-saving air conditioning system utilizing natural cooling sources according to claim 1 , wherein the fire fighting pool and the production and living pools are provided with water supply pipes connected to municipal water sources. 3 . 3. An energy-saving air-conditioning system utilizing a natural cooling source according to claim 1 or 2, wherein the cooling terminal is further connected with a refrigerator cooling system, and the refrigerator cooling system comprises a refrigerator, and the cooling The refrigerant water in the machine flows out from the refrigerant water outlet of the refrigerator and is connected to the cooling terminal through the refrigerant water outflow pipe of the refrigerator. The refrigerant water absorbs the heat of the cooling room and then the temperature rises. The refrigerant water inflow pipe is connected with the refrigerator refrigerant water inlet of the refrigerator, thereby forming a refrigerant water circulation loop between the cooling terminal and the refrigerator. The refrigerator refrigerant water inflow pipe and the refrigerator refrigerant water outflow pipe are equipped with valves. . 4. The energy-saving air-conditioning system utilizing a natural cooling source according to claim 3, wherein a heat dissipation circuit for radiating and cooling the refrigerator is provided between the refrigerator and the first cooling tower, and the heat dissipation circuit includes The chiller cooling water outlet pipe connecting the chiller cooling water outlet and the cooling tower water inlet of the first cooling tower, and the chiller cooling water inlet pipe connecting the chiller cooling water inlet and the cooling tower water outlet of the first cooling tower, so Valves are provided on both the cooling water outlet pipe of the refrigerator and the cooling water inlet pipe of the refrigerator.

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