CN-122028356-A - Heat energy driven data center waste heat recovery and refrigeration system and method

CN122028356ACN 122028356 ACN122028356 ACN 122028356ACN-122028356-A

Abstract

The invention discloses a heat energy driven data center waste heat recovery and refrigeration system and a heat energy driven data center waste heat recovery and refrigeration method, wherein the heat energy driven data center waste heat recovery and refrigeration system comprises a heat source, a heat user, a data center, an absorption refrigerating unit and a natural cold source module; the data center waste heat recovery and refrigeration system is provided with a double-effect absorption refrigeration mode, a single-effect absorption waste heat recovery mode, a partial single-effect absorption waste heat recovery mode and a natural cooling mode. The invention recovers the waste heat generated by the data center, reduces the dependence on external energy sources, reduces the energy consumption, reduces the emission of greenhouse gases and reduces the influence on the environment. The system can select the most suitable working mode according to different working conditions, and the heat energy utilization efficiency is improved. Through different mode switching, the system can adapt to different environment temperatures and heat source conditions, and the flexibility and adaptability of application are improved. The operation cost is low, the electric energy consumption is low, and the maintenance cost and the operation cost are reduced.

Inventors

LI ZIYONG
ZHU LI
SHI YUQI
LI YATING
QI ZIHAN
Han Kaihong
YANG HAOTIAN
LIU HONG
LUO HAILIANG
WANG RIYING
CHEN LI
WANG TIECHENG
JIANG YUGUANG
LIU HAICHAO
WANG ZEQING

Assignees

中国移动通信集团设计院有限公司
中国移动通信集团有限公司

Dates

Publication Date: 20260512
Application Date: 20251224

Claims (10)

1. A heat energy driven data center waste heat recovery and refrigeration system, comprising: The system comprises a heat source (1), a heat user (2), a data center (3), an absorption refrigerating unit (4) and a natural cold source module (5), wherein the absorption refrigerating unit (4) comprises a high-temperature generator (401), a low-temperature generator (402), a condenser (403), an evaporator (404) and an absorber (405); The data center waste heat recovery and refrigeration system has the following modes: The double-effect absorption refrigeration mode is characterized in that the heat source (1) is connected with the absorption refrigeration unit (4), the high-temperature generator (401) and the low-temperature absorber (405) are operated, the evaporator (404) exchanges heat with the data center (3), and the natural cold source module (5) exchanges heat with the condenser (403) and the absorber (405); A single-effect absorption refrigeration mode, wherein the heat source (1) is connected with the absorption refrigeration unit (4), the high-temperature generator (401) operates, the low-temperature generator (402) stops operating, the evaporator (404) exchanges heat with the data center (3), and the natural cold source module (5) exchanges heat with the condenser (403) and the absorber (405); A single-effect absorption type waste heat recovery mode, wherein the heat source (1) is connected with the absorption type refrigerating unit (4), the high-temperature generator (401) operates, the low-temperature generator (402) stops operating, the evaporator (404) exchanges heat with the data center (3), and the heat user (2) exchanges heat with the condenser (403) and the absorber (405); A partial single-effect absorption type waste heat recovery mode, wherein the heat source (1) is connected with the absorption type refrigerating unit (4), the high-temperature generator (401) operates, the low-temperature generator (402) stops operating, the evaporator (404) and the natural cooling module exchange heat with the data center (3), and the heat user (2) exchanges heat with the condenser (403) and the absorber (405); And in a natural cooling mode, the high-temperature generator (401) and the low-temperature generator (402) are stopped, and the natural cold source module (5) exchanges heat with the data center (3).
2. The heat energy driven data center waste heat recovery and refrigeration system according to claim 1, wherein a heat carrying working medium circulation loop (6) is formed between the heat source (1) and the high temperature generator (401), the absorber (405) is connected with the low temperature generator (402) through a first pipeline (7) to convey a lean absorbent solution into the low temperature generator (402) for heat absorption concentration, a first valve (V1) is arranged on the first pipeline (7), the low temperature generator (402) is connected with the high temperature generator (401) through a second pipeline (8) to convey an absorbent solution into the high temperature generator (401) for heat absorption concentration, a second valve (V2) is arranged on the second pipeline (8), the high temperature generator (401) is connected with the absorber (405) through a third pipeline (9) to convey a rich absorbent solution into the absorber (405) for heat absorption concentration, the absorber (405) is connected with the high temperature generator (401) through a fourth pipeline (8) through a second pipeline (8) to convey the third valve (3) and the second valve (V2) is opened when the absorber solution is conveyed into the high temperature generator (401) through the third pipeline (3) for heat absorption concentration, in the single-effect absorption refrigeration mode, the first valve (V1) and the second valve (V2) are closed and the third valve (V3) is opened.
3. The heat energy driven data center waste heat recovery and refrigeration system according to claim 2, wherein the absorption refrigeration unit (4) further comprises a first heat regenerator (406) and a second heat regenerator (407), the absorbent solution flowing out of the absorber (405) enters the low-temperature generator (402) or the high-temperature generator (401) after being preheated by the first heat regenerator (406), the absorbent solution flowing out of the low-temperature generator (402) enters the high-temperature generator (401) after being preheated by the second heat regenerator (407), and the absorbent solution flowing out of the high-temperature generator (401) enters the absorber (405) after being pre-cooled by the second heat regenerator (407) and the first heat regenerator (406) in sequence.
4. The heat energy driven data center waste heat recovery and refrigeration system according to claim 2, wherein the high temperature generator (401) is communicated with the low temperature generator (402) through a first air pipe (11) to convey the refrigerant steam to the low temperature generator (402), a fourth valve (V4) is arranged on the first air pipe (11), the high temperature generator (401) is communicated with the condenser (403) through a second air pipe (12) to convey the refrigerant steam to the condenser (403), a fifth valve (V5) is arranged on the second air pipe (12), the fourth valve (V4) is opened and the fifth valve (V5) is closed in the double effect absorption refrigeration mode, and the fourth valve (V4) is closed and the fifth valve (V5) is opened in the single effect absorption refrigeration mode.
5. The heat energy driven data center waste heat recovery and refrigeration system of claim 4, wherein the natural heat source module (5) has a first cold water inlet (501) and a first cold water outlet (502), the absorber (405) has a second cold water inlet (4051) and a second cold water outlet (4052), the condenser (403) has a third cold water inlet (4031) and a third cold water outlet (4032), the first cold water outlet (502) is communicated with the second cold water inlet (4051) through a first water pipe (20), the second cold water outlet (4052) is communicated with the third cold water inlet (4031), the third cold water outlet (4032) is communicated with the first cold water inlet (501) through a second water pipe (21), a sixth valve (V6) is provided on the first water pipe (20), and a seventh valve (V7) is provided on the second water pipe (21).
6. The heat energy driven data center waste heat recovery and refrigeration system of claim 5, wherein the heat consumer (2) has a hot water inlet (201) and a hot water outlet (202), the hot water outlet (202) is in communication with the second cold water inlet (4051) through a third water pipe (13), the hot water inlet (201) is in communication with the third cold water outlet (4032) through a fourth water pipe (14), an eighth valve (V8) is provided on the third water pipe (13), a ninth valve (V9) is provided on the fourth water pipe (14), the sixth valve (V6) and the seventh valve (V7) are closed in the single-effect absorption waste heat recovery mode, and the eighth valve (V8) and the ninth valve (V9) are opened.
7. The heat energy driven data center waste heat recovery and refrigeration system according to claim 6, further comprising a heat exchanger (19), wherein a first cooling liquid circulation loop (15) is formed between the natural cooling source module (5) and a primary side channel of the heat exchanger (19), a second cooling liquid circulation loop (16) is formed between the data center (3) and a secondary side channel of the heat exchanger (19), a tenth valve (V10) is arranged on the first cooling liquid circulation loop (15), an eleventh valve (V11) is arranged on the second cooling liquid circulation loop (16), the high temperature generator (401) and the low temperature generator (402) are stopped in the natural cooling mode, the first valve (V1) to the ninth valve (V9) are closed, the tenth valve (V10) and the eleventh valve (V11) are opened, and in the partial single-effect absorption waste heat recovery mode, the first valve (V1), the second valve (V2), the fourth valve (V4) and the eighth valve (V7) are opened, and the seventh valve (V8) are opened.
8. The heat energy driven data center waste heat recovery and refrigeration system of claim 1, wherein a third cooling fluid circulation loop (22) is formed between the data center (3) and the evaporator (404), and a twelfth valve (V12) is arranged on the third cooling fluid circulation loop.
9. The heat powered data center waste heat recovery and refrigeration system of claim 1, further comprising: a first energy storage unit (17), the first energy storage unit (17) being connected to the heat source (1) for storing at least part of the heat energy of the heat source (1), and/or -A second energy storage unit (18), said second energy storage unit (18) being connected to said heat consumer (2) for storing at least part of the heat energy of said heat consumer (2).
10. A heat energy driven data center heat recovery and refrigeration method applied to the heat energy driven data center heat recovery and refrigeration system of any one of claims 1 to 9, comprising: Acquiring the temperature Ts of a heat source (1), the outdoor environment temperature Ta and the cooling demand temperature Tc; Judging whether heat supply is needed or not; if the heat supply is needed, judging whether all waste heat needs to be recovered, if so, adopting a single-effect absorption refrigeration mode, and if not, adopting a partial single-effect absorption refrigeration mode; If the heat supply is not needed, judging whether a natural cooling mode is met, if so, adopting the natural cooling mode, if not, judging whether the absorbent refrigerating unit can operate in a double-effect absorption refrigerating mode, if so, operating in the double-effect absorption refrigerating mode, and if not, operating in a single-effect absorption refrigerating mode.

Description

Heat energy driven data center waste heat recovery and refrigeration system and method Technical Field The invention relates to the technical field of heat dissipation, in particular to a heat energy driven data center waste heat recovery and refrigeration system and method. Background With the rapid development of information technology, as a core infrastructure supporting the operation of modern information society, the problem of energy consumption of data centers is becoming a focus of industry attention. In the process of processing a large amount of data, the data center can generate a large amount of heat, and if the heat cannot be effectively recycled, the heat not only can cause energy waste, but also can aggravate the influence on the environment. In order to solve the problems, the absorption heat pump technology is used as a technology for efficiently utilizing low-grade heat energy, has the advantages of low operation cost, less electric energy consumption, less mechanical moving parts and the like, and provides new possibility for energy conservation and waste heat recovery of a data center. However, the existing absorption heat pump technology still has certain limitation in the aspect of being applied to refrigeration or waste heat utilization of a data center, and has the problems of low waste heat utilization efficiency, single operation mode, insufficient system energy consumption optimization, insufficient application scene suitability, poor heat source configuration and heat supply flexibility Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the invention provides a heat energy driven data center waste heat recovery and refrigeration system. The heat energy driven data center waste heat recovery and refrigeration system comprises a heat source, a heat user, a data center, an absorption refrigeration unit and a natural cold source module, wherein the absorption refrigeration unit comprises a high-temperature generator, a low-temperature generator, a condenser, an evaporator and an absorber; The data center waste heat recovery and refrigeration system has the following modes: The double-effect absorption refrigeration mode is characterized in that the heat source is connected with the absorption refrigeration unit, the high-temperature generator and the low-temperature absorber both operate, the evaporator exchanges heat with the data center, and the natural cold source module exchanges heat with the condenser and the absorber; The heat source is connected with the absorption refrigeration unit, the high-temperature generator operates, the low-temperature generator stops operating, the evaporator exchanges heat with the data center, and the natural cold source module exchanges heat with the condenser and the absorber; The single-effect absorption type waste heat recovery mode is adopted, the heat source is connected with the absorption type refrigerating unit, the high-temperature generator operates, the low-temperature generator stops operating, the evaporator exchanges heat with the data center, and the heat user exchanges heat with the condenser and the absorber; The heat source is connected with the absorption refrigeration unit, the high-temperature generator operates, the low-temperature generator stops operating, the evaporator and the natural cooling module exchange heat with the data center, and the heat user exchanges heat with the condenser and the absorber; and in a natural cooling mode, the high-temperature generator and the low-temperature generator stop running, and the natural cold source module exchanges heat with the data center. In some embodiments, a heat-carrying working medium circulation loop is formed between the heat source and the high-temperature generator, the absorber is connected with the low-temperature generator through a first pipeline to convey the dilute absorbent solution into the low-temperature generator for absorbing heat and concentrating, a first valve is arranged on the first pipeline, the low-temperature generator is connected with the high-temperature generator through a second pipeline to convey the absorbent solution into the high-temperature generator for absorbing heat and concentrating, a second valve is arranged on the second pipeline, the high-temperature generator is connected with the absorber through a third pipeline to convey the concentrated absorbent solution into the absorber for releasing heat and diluting, the absorber is connected with the high-temperature generator through a fourth pipeline to convey the dilute absorbent solution into the high-temperature generator for absorbing heat and concentrating, a third valve is arranged on the fourth pipeline, in the double-effect absorption refrigeration mode, the first valve and the second valve are opened, in the third valve is closed, in the single-effect refrigera