Waste heat recovery heating device for data center

Abstract

The utility model discloses a data center waste heat recovery heating device which comprises an absorption heat pump heating unit and a heating loop unit, and the absorption heat pump heating unit comprises an evaporator, a first water pump, a gas furnace, a first solution pump, a second solution pump, a heat regenerator and a generator; data center cooling water serves as a cold source side heat source of an absorption heat pump heating unit to flow into an evaporator heat exchanger, and a cooling medium is heated under the action of a first water pump to become a dilute solution after water absorption; a dilute solution is fed into a generator through a first solution pump and a heat regenerator and exchanges heat with a heating loop through a generator heat exchanger, and the dilute solution is heated, evaporated to dryness and converted into a concentrated solution through a gas furnace located at the bottom of the generator. And the concentrated solution enters the evaporator to absorb water vapor to become a dilute solution again, and is sent back to the generator for circulation through the heat regenerator and the second solution pump. The utility model aims to improve the energy utilization efficiency of data center waste heat recovery.

Description

TECHNICAL FIELD

[0001] The utility model relates to data center energy consumption recycling technical field, concretely relates to a data center waste heat recovery heating device. BACKGROUND

[0002] Data center waste heat presents the characteristics of low grade and large volume. With the improvement of energy efficiency requirements of data centers, the construction of a large number of data centers tends to be in regions with lower air temperature, such as the western part of China, which has abundant energy and lower air temperature all year round, and low refrigeration energy consumption, but the simultaneous office area heating time is long, and generally uses gas heating, and the energy consumption of heating is large. If the waste heat of the data center can be used to realize heating, the gas consumption of heating can be greatly improved. However, the waste heat of the data center is generally low in temperature, and the traditional absorption heat pump mainly absorbs heat from the air, taking the air as the cold source side, which is greatly affected by the environment temperature, and thus the recycling efficiency is low, and it is difficult to meet the requirements of heating, so it is necessary to seek some new technologies to realize the recycling of low-grade heat energy of the data center, and how to efficiently recycle the heat energy is an important problem faced by the industry. SUMMARY

[0003] The technical problem to be solved by the utility model: in view of the above problems of prior art, provide a data center waste heat recovery heating device, the utility model aims at improving the energy utilization efficiency of data center waste heat recovery.

[0004] In order to solve the above technical problem, the utility model adopts the technical scheme that:

[0005] A data center waste heat recovery heating device, comprising an absorption heat pump heating unit and a heating loop unit, the absorption heat pump heating unit comprises an absorption heat pump evaporator, a first water pump, a gas stove, a first solution pump, a second solution pump, a regenerator and an absorption heat pump generator, the cooling water of the data center flows into the heat exchanger in the absorption heat pump evaporator as the cold source side heat source of the absorption heat pump heating unit, and under the action of the first water pump, the cooling medium in the absorption heat pump evaporator is heated to become the dilute solution after absorbing water, the dilute solution passes through the first solution pump, the regenerator and enters the absorption heat pump generator to exchange heat with the heating loop unit through the heat exchanger in the absorption heat pump generator, the gas stove is located at the bottom of the absorption heat pump generator for heating the dilute solution in the absorption heat pump generator to dry and convert into concentrated solution, the concentrated solution enters the absorption heat pump evaporator, and after absorbing water vapor in the absorption heat pump evaporator, it becomes dilute solution and is sent into the absorption heat pump generator through the regenerator and the second solution pump to participate in the circulation, and continues to become concentrated solution under the action of the gas stove to participate in the circulation.

[0006] Optionally, the cooling water of the data center adopts the outlet liquid of the data center water chiller or the data center server.

[0007] Optionally, the cooling water of the data center is from a data center piping unit and a data center refrigeration unit, the data center piping unit has a first cooling water circulation loop for transferring heat of the data center servers using liquid cooling to the data center refrigeration unit through a piping water pump and a heat exchanger, the data center refrigeration unit has a second cooling water circulation loop for cooling the cooling water flowing in the first cooling water circulation loop through heat exchange in the heat exchanger, and the cooling water of the data center is a cooling medium in the second cooling water circulation loop.

[0008] Optionally, the heating loop unit includes a heating water pump and a radiator, and the heating water pump, the radiator and the heat exchanger in the absorption heat pump generator are connected by pipes to form an independent heating water circulation loop.

[0009] Optionally, the data center piping unit includes a plurality of data center servers, and the liquid cooling pipes of the plurality of data center servers are connected in parallel and connected by pipes with the piping water pump and the heat exchanger to form the first cooling water circulation loop.

[0010] Optionally, the data center refrigeration unit includes a refrigeration throttler, a refrigeration evaporator, a refrigeration compressor, a refrigeration condenser, a first water valve, a second water valve, a third water valve, a cooling tower, a second water pump and a third water pump, the cooling water flowing out of the heat exchanger in the second cooling water circulation loop flows back to the heat exchanger through the first channel of the refrigeration evaporator, the refrigeration compressor, the first channel of the refrigeration condenser, the second water valve, the cooling tower, the second water pump, the second channel of the refrigeration condenser, the refrigeration throttler and the second channel of the refrigeration evaporator in sequence, the second water valve is provided with a first three-way joint on the side of the refrigeration condenser for providing cooling water for the absorption heat pump heating unit and a second three-way joint on the side of the cooling tower for returning cooling water from the absorption heat pump heating unit, a first water valve is arranged on the pipe between the first three-way joint and the absorption heat pump heating unit, and a third water valve is arranged on the pipe between the second three-way joint and the absorption heat pump heating unit.

[0011] Compared with the prior art, the utility model mainly can play following beneficial effect: the utility model discloses a heat pump heating unit utilizes the cold source side heat source of data center cooling water, and the characteristics of low grade and large volume of data center waste heat are matched, full reuse of energy is realized, energy comprehensive utilization is improved, and waste is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of data center waste heat recovery heating device in the utility model embodiment.

[0013] Legend: 1, refrigeration throttling device;2, refrigeration evaporator;3, refrigeration compressor;4, refrigeration condenser;5, first water valve;6, second water valve;7, third water valve;8, cooling tower;9, second water pump;10, third water pump;11, heat exchanger;12, pipeline water pump;13, server;14, absorption heat pump evaporator;15, first water pump;16, gas stove;17, first solution pump;18, second solution pump;19, regenerator;20, absorption heat pump generator;21, heating water pump;22, radiator;23, office room. DETAILED DESCRIPTION

[0014] In order to make the personnel in the technical field better understand the technical scheme of the utility model, the technical scheme of the utility model will be further explained in detail in combination with the drawings in the utility model embodiment.

[0015] As Figure 1As shown, the data center waste heat recovery heating device of the embodiment includes an absorption heat pump heating unit and a heating circuit unit, the absorption heat pump heating unit includes an absorption heat pump evaporator 14, a first water pump 15, a gas furnace 16, a first solution pump 17, a second solution pump 18, a regenerator 19 and an absorption heat pump generator 20, the cooling water of the data center flows into the heat exchanger in the absorption heat pump evaporator 14 as the cold source side heat source of the absorption heat pump heating unit, and under the action of the first water pump 15, the cooling medium in the absorption heat pump evaporator 14 is heated to become a dilute solution after absorbing water, the dilute solution is sent into the absorption heat pump generator 20 through the first solution pump 17 and the regenerator 19 to exchange heat with the heating circuit unit through the heat exchanger in the absorption heat pump generator 20, the gas furnace 16 is located at the bottom of the absorption heat pump generator 20 to heat and dry the dilute solution in the absorption heat pump generator 20 to convert it into a concentrated solution, and the concentrated solution enters the absorption heat pump evaporator 14, becomes a dilute solution after absorbing water vapor in the absorption heat pump evaporator 14, and is sent into the absorption heat pump generator 20 through the regenerator 19 and the second solution pump 18 to participate in the circulation, and continues to become a concentrated solution under the action of the gas furnace 16 to participate in the circulation.

[0016] In the embodiment, the cooling water of the data center is the outflow of the data center water chiller or the data center server 13.

[0017] In the embodiment, the cooling water of the data center comes from a data center pipeline unit and a data center refrigeration unit, the data center pipeline unit has a first cooling water circulation loop for transferring the heat of the data center server 13 using liquid cooling to the data center refrigeration unit through the pipeline water pump 12 and the heat exchanger 11, the data center refrigeration unit has a second cooling water circulation loop for cooling the cooling water in the first cooling water circulation loop flowing into the heat exchanger 11 through heat exchange, and the cooling water of the data center is the cooling medium in the second cooling water circulation loop.

[0018] Specifically, the heat generated by the data center server 13 is transported to the plate heat exchanger 11 through the pipeline water pump 12, and is transported to the evaporator 2 through the refrigeration system water pump 10 to achieve cooling.

[0019] In the embodiment, the heating circuit unit includes a heating water pump 21 and a radiator 22, the heating water pump 21, the radiator 22 and the heat exchanger in the absorption heat pump generator 20 are connected by pipelines to form an independent heating water circulation loop.

[0020] In the embodiment, the data center pipeline unit includes a plurality of data center servers 13, the liquid cooling pipelines of the plurality of data center servers 13 are connected in parallel, and are connected by pipelines with the pipeline water pump 12 and the heat exchanger 11 to form the first cooling water circulation loop.

[0021] In the embodiment, the data center refrigeration unit comprises a refrigeration throttler 1, a refrigeration evaporator 2, a refrigeration compressor 3, a refrigeration condenser 4, a first water valve 5, a second water valve 6, a third water valve 7, a cooling tower 8, a second water pump 9 and a third water pump 10, the cooling water flowing out of the heat exchanger 11 in the second cooling water circulation loop passes through the first channel of the refrigeration evaporator 2, the refrigeration compressor 3, the first channel of the refrigeration condenser 4, the second water valve 6, the cooling tower 8, the second water pump 9, the second channel of the refrigeration condenser 4, the refrigeration throttler 1 and the second channel of the refrigeration evaporator 2 in sequence and then flows back to the heat exchanger 11, and the second water valve 6 is provided with a first three-way joint on the side of the refrigeration condenser 4 for providing cooling water for the absorption heat pump heating unit and a second three-way joint on the side of the cooling tower 8 for flowing back cooling water from the absorption heat pump heating unit, and the first water valve 5 is arranged on the pipeline between the first three-way joint and the absorption heat pump heating unit, and the third water valve 7 is arranged on the pipeline between the second three-way joint and the absorption heat pump heating unit.

[0022] The working process of the data center waste heat recovery heating device in the embodiment is as follows: when the region enters the heating season, the second water valve 6 is closed, and the first water valve 5 and the third water valve 7 are opened, and the cooling water directly enters the absorption heat pump evaporator 14 to provide heat for the circulating water under the action of the first water pump 15, accelerate water evaporation and improve the circulation efficiency. The medium in the absorption heat pump evaporator 14 can be selected as ammonia water solution or lithium bromide solution, and the dilute solution after absorbing water in the absorption heat pump evaporator 14 enters the absorption heat pump generator 20 through the first solution pump 17 and exchanges heat with the heat exchanger in the heating circuit, and then the heat is transmitted to the heating radiators 22 in the office room 23 through the heating water pump 21, and the heating process is completed. The dilute solution in the absorption heat pump continues to be dried in the absorption heat pump generator 20 under the heating of the gas furnace 16, is converted into a concentrated solution from a dilute solution, and is transmitted to the absorption heat pump evaporator 14 to continue to absorb water vapor, and the next cycle is started.

[0023] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A data center waste heat recovery heating device, characterized in that, The application relates to an absorption heat pump heating unit and a heating loop unit, wherein the absorption heat pump heating unit comprises an absorption heat pump evaporator (14), a first water pump (15), a gas furnace (16), a first solution pump (17), a second solution pump (18), a regenerator (19) and an absorption heat pump generator (20), cooling water of a data center flows into a heat exchanger in the absorption heat pump evaporator (14) as a cold source side heat source of the absorption heat pump heating unit, and the cooling water is heated to become a dilute solution after absorbing water under the action of the first water pump (15), the dilute solution is sent into the absorption heat pump generator (20) through the first solution pump (17) and the regenerator (19) to exchange heat with the heating loop unit through a heat exchanger in the absorption heat pump generator (20), the gas furnace (16) is located at the bottom of the absorption heat pump generator (20) and is used for heating and evaporating the dilute solution in the absorption heat pump generator (20) to convert the dilute solution into a concentrated solution, the concentrated solution enters the absorption heat pump evaporator (14), becomes a dilute solution after absorbing water vapor in the absorption heat pump evaporator (14), and is sent into the absorption heat pump generator (20) through the regenerator (19) and the second solution pump (18) to participate in the circulation and continue to become a concentrated solution under the action of the gas furnace (16) to participate in the circulation.

2. The data center waste heat recovery heating apparatus of claim 1, wherein, The cooling water of the data center is discharged from a data center water chiller or a data center server (13).

3. The data center waste heat recovery heating device of claim 1, wherein, The cooling water of the data center is from a data center pipeline unit and a data center refrigeration unit, the data center pipeline unit has a first cooling water circulation loop for transferring heat of the data center server (13) adopting liquid cooling to the data center refrigeration unit through a pipeline water pump (12) and a heat exchanger (11), the data center refrigeration unit has a second cooling water circulation loop for cooling the cooling water in the first cooling water circulation loop flowing into the heat exchanger (11) through heat exchange, and the cooling water of the data center is a cooling medium in the second cooling water circulation loop.

4. The data center waste heat recovery heating device of claim 1, wherein, The heating loop unit comprises a heating water pump (21) and a radiator (22), the heating water pump (21), the radiator (22) and the heat exchanger in the absorption heat pump generator (20) are connected through pipelines to form an independent heating water circulation loop.

5. The data center waste heat recovery heating device of claim 3, wherein, The data center pipeline unit comprises a plurality of data center servers (13), liquid cooling pipelines of the plurality of data center servers (13) are connected in parallel and connected through pipelines with the pipeline water pump (12) and the heat exchanger (11) to form the first cooling water circulation loop.

6. The data center waste heat recovery heating device of claim 5, wherein, The data center refrigeration unit comprises a refrigeration throttler (1), a refrigeration evaporator (2), a refrigeration compressor (3), a refrigeration condenser (4), a first water valve (5), a second water valve (6), a third water valve (7), a cooling tower (8), a second water pump (9) and a third water pump (10), cooling water flowing out of the heat exchanger (11) in the second cooling water circulation loop passes through the first channel of the refrigeration evaporator (2), the refrigeration compressor (3), the first channel of the refrigeration condenser (4), the second water valve (6), the cooling tower (8), the second water pump (9), the second channel of the refrigeration condenser (4), the refrigeration throttler (1), the second channel of the refrigeration evaporator (2) in sequence and then flows back to the heat exchanger (11), the second water valve (6) is provided with a first three-way joint on the side of the refrigeration condenser (4) for providing cooling water for the absorption heat pump heating unit and a second three-way joint on the side of the cooling tower (8) for flowing back cooling water from the absorption heat pump heating unit, a first water valve (5) is arranged on the pipeline between the first three-way joint and the absorption heat pump heating unit, and a third water valve (7) is arranged on the pipeline between the second three-way joint and the absorption heat pump heating unit.

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