Heat pump type domestic hot water and water cooling refrigeration and cooling tower free cold supply coupling system

Abstract

The utility model provides a heat pump type domestic hot water and water-cooling refrigeration and cooling tower free cold supply coupling system. The heat pump type domestic hot water and water-cooling refrigeration and cooling tower free cold supply coupling system comprises a heat pump type domestic hot water subsystem, a water-cooling refrigeration subsystem and a cooling tower free cold supply subsystem. The heat pump type domestic hot water subsystem is coupled with the water-cooling refrigeration subsystem, and the heat pump type domestic hot water subsystem and the water-cooling refrigeration subsystem supply cold to an air conditioner user together; the heat pump type domestic hot water subsystem is coupled with the cooling tower free cold supply subsystem, and the heat pump type domestic hot water subsystem and the cooling tower free cold supply subsystem supply cold to an air conditioner user together; the cooling tower free cold supply subsystem controls connection with an air conditioner user through a switch valve, and the heat pump type domestic hot water subsystem is coupled with the water-cooling refrigeration subsystem and the cooling tower free cold supply subsystem, so that various operation systems are realized, the use efficiency of equipment is improved, the operation cost is saved, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling and heating, and in particular to an energy-saving system for coupling heat pump type domestic hot water with water-cooled refrigeration and free cooling by a cooling tower. Background Art

[0002] The existing central air conditioning cold source and heat pump domestic hot water system technologies are independent systems, such as central air conditioning refrigeration system; water-to-water plate heat exchanger combined with cooling tower as free refrigeration system in transition season; heat pump system for domestic hot water.

[0003] The existing Chinese patent with publication number CN20131 water-cooled refrigeration unit 8 cooling water circulation pump 7 secondary side circulation pump 6 cooling water circulation pump 7Y discloses a chiller energy consumption control device of a central air-conditioning refrigeration system, including: an equipment characteristic acquisition device, which acquires equipment characteristics of the chiller; a set of regression calculation devices, which communicate with the equipment characteristic acquisition device, and perform regression operations based on the equipment characteristics of the chiller acquired by the equipment characteristic acquisition device to obtain a set of energy consumption regression values; an energy consumption calculation device, which communicates with the equipment characteristic acquisition device and the regression calculation device, and calculates the energy consumption of the chiller based on the energy consumption regression value.

[0004] The existing Chinese patent with publication number CN20220 primary side circulation pump 40 chilled water pump 90U discloses a cooling tower free refrigeration energy-saving device, including a cooling water loop, a chilled water loop, a compressor, a condenser and an evaporator provided with a cooling tower, three-way valves are respectively arranged on the condenser input and output pipelines of the cooling water loop to separate a cooling water branch; three-way valves are also respectively arranged on the evaporator input and output pipelines of the chilled water loop to separate a chilled water branch; a plate heat exchanger is arranged between the cooling water branch and the chilled water branch. The utility model is aimed at the fact that the temperature of the cooling supply is not required to be too low and it is an intermittent demand. A plate heat exchanger is added to the original air conditioning water system, and the cold water provided by the outdoor cooling water tower is used as the primary cold source to exchange heat with the chilled water, so that the open cooling tower 10-1 secondary side circulation pump 6℃ cold water supply system can be produced.

[0005] The existing Chinese patent with publication number CN2031 Refrigerated Water Pump 90 Secondary Side Circulation Pump 621U discloses a new energy-saving water system for household heat pump water heaters, including a heat pump water heater, a pressurized water tank and a domestic hot water port; the heat pump water heater is provided with a heating water inlet and a heating water outlet. The pressurized water tank is provided with a first interface and a second interface, the heating water inlet is connected to the first interface, the heating water outlet is connected to the second interface; the domestic hot water port is connected to the second interface.

[0006] The shortcomings of the existing technology are: they operate independently, without making use of the original equipment, the cold end energy of the heat pump system for domestic hot water is not recycled, resulting in cold capacity loss, insufficient energy saving, and no use of idle plate heat exchangers, cooling towers and other equipment in seasons when air conditioning is not used. A separate heat exchange system needs to be set up, which increases the equipment investment cost. Utility Model Content

[0007] In view of the defects in the prior art, the purpose of the utility model is to provide a system for coupling heat pump type domestic hot water with water-cooled refrigeration and free cooling by a cooling tower.

[0008] According to the utility model, a system for coupling heat pump type domestic hot water with water cooling and refrigeration and cooling tower free cooling is provided, comprising a heat pump type domestic hot water subsystem, a water cooling subsystem and a cooling tower free cooling subsystem;

[0009] The heat pump type domestic hot water subsystem is coupled with the water cooling refrigeration subsystem, and the heat pump type domestic hot water subsystem and the water cooling refrigeration subsystem jointly provide cooling to air-conditioning users;

[0010] The heat pump type domestic hot water subsystem is coupled with the cooling tower free cooling subsystem, and the heat pump type domestic hot water subsystem and the cooling tower free cooling subsystem jointly provide cooling to air-conditioning users;

[0011] The cooling tower free cooling subsystem is connected to the air-conditioning user through a switch valve control.

[0012] Preferably, the heat pump type domestic hot water subsystem comprises a domestic hot water circulation pump, a water-cooled heat pump unit and a domestic hot water storage tank;

[0013] The domestic hot water circulation pump is connected to the water-cooled heat pump unit through a pipeline, the water-cooled heat pump unit is connected to the domestic hot water heat storage tank through a pipeline, and the domestic hot water heat storage tank is connected to the domestic hot water circulation pump through a pipeline.

[0014] Preferably, the water-cooling refrigeration subsystem includes a cooling water circulation pump, a water-cooling refrigeration unit, a chilled water pump, an open cooling tower and an air-conditioning end user;

[0015] The cooling water circulation pump is connected to the water-cooled refrigeration unit through a pipeline, the water-cooled refrigeration unit is connected to the open cooling tower through a pipeline, and the open cooling tower is connected to the cooling water circulation pump through a pipeline;

[0016] The chilled water pump is connected to the water-cooled refrigeration unit through a pipeline, the water-cooled refrigeration unit is connected to the air-conditioning terminal users through a pipeline, and the air-conditioning terminal users are connected to the chilled water pump through a pipeline.

[0017] Preferably, the water-cooling refrigeration subsystem further comprises a constant pressure device, and the constant pressure device is respectively connected to the chilled water pump and the air-conditioning terminal user through pipelines.

[0018] Preferably, the cooling tower free cooling subsystem includes a primary side circulation pump, a water-water plate heat exchanger, a secondary side circulation pump, an open cooling tower and an air conditioning end user;

[0019] The secondary side circulation pump is connected to the water-water plate heat exchanger through a pipeline, the water-water plate heat exchanger is connected to the open cooling tower through a pipeline, and the open cooling tower is connected to the secondary side circulation pump through a pipeline;

[0020] The primary-side circulation pump is connected to the water-water plate heat exchanger through a pipeline, the water-water plate heat exchanger is connected to the air-conditioning terminal user through a pipeline, and the air-conditioning terminal user is connected to the primary-side circulation pump through a pipeline.

[0021] Preferably, the cooling tower free cooling subsystem further comprises a constant pressure device, and the constant pressure device is respectively connected to the primary side circulation pump and the air-conditioning terminal user through pipelines.

[0022] Preferably, the heat pump type domestic hot water subsystem is connected to the circulation path of the water-cooled refrigeration subsystem via a cold water pump;

[0023] The cold water pump is connected to the water-cooled heat pump unit through a pipeline, the water-cooled heat pump unit is connected to the air-conditioning terminal users through a pipeline, and the air-conditioning terminal users are connected to the cold water pump through a pipeline.

[0024] Preferably, the heat pump type domestic hot water subsystem is connected to the circulation path of the cooling tower free cooling subsystem through a cold water pump;

[0025] The switch valve is closed;

[0026] The cold water pump is connected to the water-cooled heat pump unit through a pipeline, the water-cooled heat pump unit is connected to the air-conditioning terminal users through a pipeline, and the air-conditioning terminal users are connected to the cold water pump through a pipeline.

[0027] Preferably, the free cooling subsystem includes a water-water plate heat exchanger, a secondary side circulation pump and an open cooling tower;

[0028] The secondary side circulation pump is connected to the water-water plate heat exchanger through a pipeline, the water-water plate heat exchanger is connected to the open cooling tower through a pipeline, and the open cooling tower is connected to the secondary side circulation pump through a pipeline;

[0029] The heat pump type domestic hot water subsystem is connected to the circulation path of the cooling tower free cooling subsystem through a cold water pump;

[0030] The switch valve is opened;

[0031] The cold water pump is connected to the water-cooled heat pump unit through a pipeline, the water-cooled heat pump unit is connected to the water-water plate heat exchanger through a pipeline, the water-water plate heat exchanger is connected to the switch valve through a pipeline, and the switch valve is connected to the cold water pump through a pipeline.

[0032] Preferably, the water-cooled refrigeration subsystem shares an open cooling tower and a constant pressure device with the cooling tower free cooling subsystem.

[0033] Compared with the prior art, the utility model has the following beneficial effects:

[0034] 1. The utility model realizes multiple operation systems by coupling the heat pump type domestic hot water subsystem with the water-cooled refrigeration subsystem and the cooling tower free cooling subsystem, thereby improving the use efficiency of the equipment, saving operating costs and reducing energy consumption;

[0035] 2. The utility model reduces the cooling capacity of the water-cooling refrigeration subsystem by coupling the heat pump type domestic hot water subsystem with the water-cooling refrigeration subsystem respectively, and at the same time uses the low-temperature medium generated by the heat pump of the domestic hot water for cooling the air-conditioning users, thereby achieving the effect of improving the overall efficiency of the heat pump for domestic hot water and reducing the energy consumption of the air-conditioning system.

[0036] 3. The utility model couples the heat pump type domestic hot water subsystem with the cooling tower free cooling subsystem, utilizes the cooling tower free cooling subsystem for free cooling, and can also utilize the cooling capacity generated by the heat pump type domestic hot water subsystem, thereby solving the indoor comfort problem while saving system operation costs and reducing energy consumption;

[0037] 4. The utility model connects the heat pump type domestic hot water subsystem through the cooling tower free cooling subsystem. When the switch valve is turned on, the heat pump exchanges heat with the outdoor air through the water-water plate heat exchanger and the open cooling tower. At the same time, the water-cooled heat pump unit can produce domestic hot water. The equipment between different systems can be used for each other, which solves the problem of saving equipment investment while producing domestic hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0039] Figure 1 This is a schematic diagram of the coupling structure of the system mainly embodied in the utility model;

[0040] In the figure:

[0041] Domestic hot water circulation pump 1 Water-cooled refrigeration unit 8

[0042] Water-cooled heat pump unit 2 Chilled water pump 9

[0043] Cold water pump 3 Open cooling tower 10

[0044] Primary side circulation pump 4 Constant pressure device 11

[0045] Water-water plate heat exchanger 5 Air conditioning end user 12

[0046] Secondary side circulation pump 6 Switch valve 13

[0047] Cooling water circulation pump 7 Domestic hot water storage tank 14 DETAILED DESCRIPTION

[0048] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0049] like Figure 1 As shown, a system for coupling heat pump type domestic hot water with water-cooled refrigeration and free cooling of cooling tower provided by the utility model includes a heat pump type domestic hot water subsystem, a water-cooled refrigeration subsystem and a cooling tower free cooling subsystem. The heat pump type domestic hot water subsystem is coupled with the water-cooled refrigeration subsystem, and the heat pump type domestic hot water subsystem and the water-cooled refrigeration subsystem jointly supply cooling to air-conditioning users; the heat pump type domestic hot water subsystem is coupled with the cooling tower free cooling subsystem, and the heat pump type domestic hot water subsystem and the cooling tower free cooling subsystem jointly supply cooling to air-conditioning users; the cooling tower free cooling subsystem controls the connection with the air-conditioning users through the switch valve 13.

[0050] in,

[0051] The heat pump type domestic hot water subsystem includes a domestic hot water circulation pump 1, a water-cooled heat pump unit 2, and a domestic hot water storage tank 14. The domestic hot water circulation pump 1 is connected to the water-cooled heat pump unit 2 through a pipeline, the water-cooled heat pump unit 2 is connected to the domestic hot water storage tank 14 through a pipeline, and the domestic hot water storage tank 14 is connected to the domestic hot water circulation pump 1 through a pipeline to enter a circulation operation.

[0052] The water-cooled refrigeration subsystem includes a cooling water circulation pump 7, a water-cooled refrigeration unit 8, a chilled water pump 9, an open cooling tower 10, a constant pressure device 11 and an air-conditioning terminal user 12. The cooling water circulation pump 7 is connected to the water-cooled refrigeration unit 8 through a pipeline, the water-cooled refrigeration unit 8 is connected to the open cooling tower 10 through a pipeline, and the open cooling tower 10 is connected to the cooling water circulation pump 7 through a pipeline to enter a circulation operation; the chilled water pump 9 is connected to the water-cooled refrigeration unit 8 through a pipeline, the water-cooled refrigeration unit 8 is connected to the air-conditioning terminal user 12 through a pipeline, and the air-conditioning terminal user 12 is connected to the chilled water pump 9 through a pipeline to enter a circulation operation; the constant pressure device 11 is used at the same time, and the constant pressure device 11 is respectively connected to the chilled water pump 9 and the air-conditioning terminal user 12 through pipelines.

[0053] The cooling tower free cooling subsystem includes a primary-side circulation pump 4, a water-water plate heat exchanger 5, a secondary-side circulation pump 6, an open cooling tower 10, a constant pressure device 11 and an air-conditioning terminal user 12. The secondary-side circulation pump 6 is connected to the water-water plate heat exchanger 5 through a pipeline, the water-water plate heat exchanger 5 is connected to the open cooling tower 10 through a pipeline, and the open cooling tower 10 is connected to the secondary-side circulation pump 6 through a pipeline to enter a circulation operation; the primary-side circulation pump 4 is connected to the water-water plate heat exchanger 5 through a pipeline, the water-water plate heat exchanger 5 is connected to the air-conditioning terminal user 12 through a pipeline, and the air-conditioning terminal user 12 is connected to the primary-side circulation pump 4 through a pipeline to enter a circulation operation; the constant pressure device 11 is used at the same time, and the constant pressure device 11 is respectively connected to the primary-side circulation pump 4 and the air-conditioning terminal user 12 through pipelines.

[0054] When the air-conditioning terminal user 12 requires direct cooling from the water-cooled refrigeration unit 8 and the air-conditioning terminal user 12 requires domestic hot water: the switch valve 13 is closed, the primary side circulation pump 4, the water-water plate heat exchanger 5, and the secondary side circulation pump 6 are disabled and shut down.

[0055] The operation sequence of the refrigeration system is: the cooling water circulation pump 7 is connected to the water-cooled refrigeration unit 8, the water-cooled refrigeration unit 8 is connected to the open cooling tower 10, the open cooling tower 10 is connected to the cooling water circulation pump 7, and enters a circulation operation, the chilled water pump 9 is connected to the water-cooled refrigeration unit 8, the water-cooled refrigeration unit 8 is connected to the air-conditioning terminal user 12, the air-conditioning terminal user 12 is connected to the chilled water pump 9, and enters a circulation operation, and the constant pressure device 11 is used at the same time.

[0056] The domestic hot water circulation pump 1 is connected to the water-cooled heat pump unit 2 to produce hot water, and the water-cooled heat pump unit 2 is then connected to the domestic hot water heat storage tank 14 to store heat in the domestic hot water heat storage tank 14, and the domestic hot water heat storage tank 14 is then connected to the domestic hot water circulation pump 1 to enter a circulation operation. At the same time, the cold water pump 3 is connected to the water-cooled heat pump unit 2, and the water-cooled heat pump unit 2 is then connected to the air-conditioning terminal user 12, and the air-conditioning terminal user 12 is then connected to the cold water pump 3 to enter a cooling circulation operation.

[0057] During the period when the air-conditioning end-user 12 requires cooling, the water-cooled heat pump unit 2 can provide cooling to the air-conditioning end-user 12 while producing domestic hot water, thereby reducing the cooling capacity of the water-cooled refrigeration unit 8. At the same time, the low-temperature medium produced by the heat pump for domestic hot water can be used for cooling the air-conditioning users, thereby achieving the effect of improving the overall efficiency of the heat pump for domestic hot water and reducing the energy consumption of the air-conditioning system.

[0058] When the air-conditioning end user 12 needs indirect cooling by the water-water plate heat exchanger 5 in the transition season and the air-conditioning end user 12 needs domestic hot water: the switch valve 13 is closed, and the cooling water circulation pump 7, the water-cooled refrigeration unit 8, and the chilled water pump 9 are disabled and shut down.

[0059] The operation sequence of the indirect refrigeration system is: the secondary side circulation pump 6 of the equipment is connected to the water-water plate heat exchanger 5, the water-water plate heat exchanger 5 is connected to the open cooling tower 10, and the open cooling tower 10 is connected to the secondary side circulation pump 6 to enter the circulation operation. The primary side circulation pump 4 is connected to the equipment water-water plate heat exchanger 5, the water-water plate heat exchanger 5 is connected to the air conditioning terminal user 12, and the air conditioning terminal user 12 is connected to the primary side circulation pump 4 to enter the circulation operation, and the constant pressure device 11 is used at the same time.

[0060] The domestic hot water circulation pump 1 is connected to the water-cooled heat pump unit 2 to produce hot water, the water-cooled heat pump unit 2 is then connected to the primary side circulation pump 4 to store heat in the domestic hot water heat storage tank 14, the domestic hot water heat storage tank 14 is then connected to the domestic hot water circulation pump 1, and the circulation operation is started. At the same time, the cold water pump 3 is connected to the water-cooled heat pump unit 2, the water-cooled heat pump unit 2 is then connected to the air-conditioning terminal user 12, and the air-conditioning terminal user 12 is then connected to the cold water pump 3, and the cooling circulation operation is started.

[0061] The water-cooled heat pump unit 2 uses the water-to-water plate heat exchanger 5, the secondary side circulation pump 6, the open cooling tower 10 and the switch valve 13 to produce hot water without the need for additional water source end heat exchange equipment. In this way, the open cooling tower 10 and the water-to-water plate heat exchanger 5 can be used for free cooling, and the cooling capacity generated by the water-cooled heat pump unit 2 can be used to solve the indoor comfort problem while saving system operating costs and reducing energy consumption.

[0062] When the air-conditioning terminal user 12 does not need cooling, but needs domestic hot water: the switch valve 13 is opened, the primary side circulation pump 4, the cooling water circulation pump 7, the water-cooled refrigeration unit 8, the chilled water pump 9, the constant pressure device 11 and the air-conditioning terminal user 12 are disabled and shut down.

[0063] The secondary side circulation pump 6 is connected to the water-water plate heat exchanger 5, the water-water plate heat exchanger 5 is connected to the open cooling tower 10, and the open cooling tower 10 is connected to the secondary side circulation pump 6 to enter a circulation operation. At the same time, the cold water pump 3 is connected to the water-cooled heat pump unit 2, the water-cooled heat pump unit 2 is connected to the water-water plate heat exchanger 5, the water-water plate heat exchanger 5 is connected to the switch valve 13, and the switch valve 13 is connected to the cold water pump 3 to enter a circulation operation. At the same time, the domestic hot water circulation pump 1 is connected to the water-cooled heat pump unit 2 to produce hot water, the water-cooled heat pump unit 2 is connected to the domestic hot water heat storage tank 14 to store heat in the domestic hot water heat storage tank 14, and the domestic hot water heat storage tank 14 is connected to the domestic hot water circulation pump 1 to enter a circulation operation.

[0064] When the water-cooled refrigeration unit 8 is not turned on during the transition season, the water-cooled heat pump unit exchanges heat with the outdoor air through the water-water plate heat exchanger 5 and the open cooling tower 10. At the same time, the water-cooled heat pump unit 2 can produce hot water. The equipment between different systems can be used for each other to solve the problem of producing domestic hot water and save equipment investment.

[0065] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0066] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A system for coupling heat pump type domestic hot water with water cooling and cooling tower free cooling, characterized in that: include: Heat pump type domestic hot water subsystem, water-cooled refrigeration subsystem and cooling tower free cooling subsystem; The heat pump type domestic hot water subsystem is coupled with the water cooling refrigeration subsystem, and the heat pump type domestic hot water subsystem and the water cooling refrigeration subsystem jointly provide cooling to air-conditioning users; The heat pump type domestic hot water subsystem is coupled with the cooling tower free cooling subsystem, and the heat pump type domestic hot water subsystem and the cooling tower free cooling subsystem jointly provide cooling to air-conditioning users; The cooling tower free cooling subsystem controls the connection with the air conditioning user through a switch valve (13).

2. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 1, characterized in that: The heat pump type domestic hot water subsystem comprises a domestic hot water circulation pump (1), a water-cooled heat pump unit (2) and a domestic hot water storage tank (14); The domestic hot water circulation pump (1) is connected to the water-cooled heat pump unit (2) via a pipeline, the water-cooled heat pump unit (2) is connected to the domestic hot water heat storage tank (14) via a pipeline, and the domestic hot water heat storage tank (14) is connected to the domestic hot water circulation pump (1) via a pipeline.

3. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 2, characterized in that: The water-cooling refrigeration subsystem comprises a cooling water circulation pump (7), a water-cooling refrigeration unit (8), a freezing water pump (9), an open cooling tower (10) and an air-conditioning end user (12); The cooling water circulation pump (7) is connected to a water-cooled refrigeration unit (8) via a pipeline, the water-cooled refrigeration unit (8) is connected to an open cooling tower (10) via a pipeline, and the open cooling tower (10) is connected to the cooling water circulation pump (7) via a pipeline; The chilled water pump (9) is connected to the water-cooled refrigeration unit (8) via a pipeline, the water-cooled refrigeration unit (8) is connected to the air-conditioning end user (12) via a pipeline, and the air-conditioning end user (12) is connected to the chilled water pump (9) via a pipeline.

4. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 3, characterized in that: The water-cooling refrigeration subsystem also includes a constant pressure device (11), and the constant pressure device (11) is respectively connected to the freezing water pump (9) and the air-conditioning terminal user (12) through pipelines.

5. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 2, characterized in that: The cooling tower free cooling subsystem comprises a primary side circulation pump (4), a water-water plate heat exchanger (5), a secondary side circulation pump (6), an open cooling tower (10) and an air conditioning end user (12); The secondary side circulation pump (6) is connected to the water-water plate heat exchanger (5) through a pipeline, the water-water plate heat exchanger (5) is connected to the open cooling tower (10) through a pipeline, and the open cooling tower (10) is connected to the secondary side circulation pump (6) through a pipeline; The primary-side circulation pump (4) is connected to the water-water plate heat exchanger (5) via a pipeline, the water-water plate heat exchanger (5) is connected to the air-conditioning end user (12) via a pipeline, and the air-conditioning end user (12) is connected to the primary-side circulation pump (4) via a pipeline.

6. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 5, characterized in that: The cooling tower free cooling subsystem also includes a constant pressure device (11), and the constant pressure device (11) is respectively connected to a primary side circulation pump (4) and an air conditioning terminal user (12) through pipelines.

7. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 3, characterized in that: The heat pump type domestic hot water subsystem is connected to the circulation path of the water-cooling refrigeration subsystem via a cold water pump (3); The cold water pump (3) is connected to the water-cooled heat pump unit (2) via a pipeline, the water-cooled heat pump unit (2) is connected to the air-conditioning end user (12) via a pipeline, and the air-conditioning end user (12) is connected to the cold water pump (3) via a pipeline.

8. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 5, characterized in that: The heat pump type domestic hot water subsystem is connected to the circulation path of the cooling tower free cooling subsystem via a cold water pump (3); The switch valve (13) is closed; The cold water pump (3) is connected to the water-cooled heat pump unit (2) via a pipeline, the water-cooled heat pump unit (2) is connected to the air-conditioning end user (12) via a pipeline, and the air-conditioning end user (12) is connected to the cold water pump (3) via a pipeline.

9. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 2, characterized in that: The free cooling subsystem comprises a water-water plate heat exchanger (5), a secondary side circulation pump (6) and an open cooling tower (10); The secondary side circulation pump (6) is connected to the water-water plate heat exchanger (5) through a pipeline, the water-water plate heat exchanger (5) is connected to the open cooling tower (10) through a pipeline, and the open cooling tower (10) is connected to the secondary side circulation pump (6) through a pipeline; The heat pump type domestic hot water subsystem is connected to the circulation path of the cooling tower free cooling subsystem via a cold water pump (3); The switch valve (13) is opened; The cold water pump (3) is connected to the water-cooled heat pump unit (2) via a pipeline, the water-cooled heat pump unit (2) is connected to the water-water plate heat exchanger (5) via a pipeline, the water-water plate heat exchanger (5) is connected to the switch valve (13) via a pipeline, and the switch valve (13) is connected to the cold water pump (3) via a pipeline.

10. The system of heat pump type domestic hot water coupled with water cooling and cooling tower free cooling as claimed in claim 1, characterized in that: The water-cooled refrigeration subsystem shares an open cooling tower (10) and a constant pressure device (11) with a cooling tower free refrigeration subsystem.

Images