CN114526559A - High-efficient dehydration of heat source tower maintains system - Google Patents
High-efficient dehydration of heat source tower maintains system Download PDFInfo
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- CN114526559A CN114526559A CN202210177459.3A CN202210177459A CN114526559A CN 114526559 A CN114526559 A CN 114526559A CN 202210177459 A CN202210177459 A CN 202210177459A CN 114526559 A CN114526559 A CN 114526559A
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- secondary refrigerant
- refrigerant
- generator
- circulating system
- circulating
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- 230000018044 dehydration Effects 0.000 title claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 146
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000001704 evaporation Methods 0.000 claims abstract description 21
- 230000005494 condensation Effects 0.000 claims abstract description 19
- 238000009833 condensation Methods 0.000 claims abstract description 19
- 230000008020 evaporation Effects 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 3
- 238000012423 maintenance Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/001—Charging refrigerant to a cycle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to the technical field of heat source towers, and particularly relates to an efficient dehydration maintaining system for a heat source tower, which comprises a secondary refrigerant evaporation circulating system, a refrigerant circulating system and a secondary refrigerant condensation circulating system; the secondary refrigerant evaporation circulating system comprises a secondary refrigerant generator, a combined type injection evacuating device and a secondary refrigerant heat recovery heat exchange circulating device; the secondary refrigerant evaporation circulation system is connected with a secondary refrigerant storage container in the heat source tower water system through a secondary refrigerant heat recovery heat exchange circulation device; the secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and carries out heat exchange on the high-temperature secondary refrigerant discharged from the closed system and the low-concentration secondary refrigerant entering the closed system. The invention has simple structure, small occupied space, high energy efficiency and low cost, maintains the stable concentration of the secondary refrigerant in the heat source tower, ensures that the system safely and stably provides heat for users and ensures that the system safely and stably provides heat for users in a low-temperature environment.
Description
Technical Field
The invention belongs to the technical field of heat source towers, and particularly relates to an efficient dehydration maintaining system for a heat source tower.
Background
As the heat source tower system is widely used in winter heating projects, maintaining the concentration of the coolant in the heat source tower becomes an important technical barrier for the heat source tower project, and is also a key technology for energy efficiency and cost. The first scheme for maintaining the concentration of the secondary refrigerant in the heat source tower in the prior art is as follows: when the concentration of the secondary refrigerant is reduced, the high-concentration secondary refrigerant is increased to maintain the concentration of the secondary refrigerant, and the first scheme has the defects of large occupied space and increased cost; in the second scheme, the refrigerant container is electrically heated to evaporate and dewater at high temperature, and the second scheme has the defects of low energy efficiency and high cost.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a high-efficiency dehydration maintaining system for a heat source tower, which comprises a secondary refrigerant evaporation circulating system, a refrigerant circulating system and a secondary refrigerant condensation circulating system; the secondary refrigerant evaporation circulating system comprises a secondary refrigerant generator, a combined injection evacuating device and a secondary refrigerant heat recovery heat exchange circulating device; the secondary refrigerant evaporation circulation system is connected with a secondary refrigerant storage container in the heat source tower water system through a secondary refrigerant heat recovery heat exchange circulation device; the secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and carries out heat exchange on high-temperature secondary refrigerant discharged from the closed system and low-concentration secondary refrigerant entering the closed system.
The refrigerant circulating system comprises an evaporator, a refrigerant-carrying generator, a compressor and a refrigerant throttling device thereof; the high-temperature refrigerant in the refrigerant circulating system is in the secondary refrigerant generator, the secondary cooler in the shell pass is heated and evaporated by the secondary refrigerant generator, and heat exchange is carried out between the evaporator and the secondary refrigerant condensation circulating system to form a closed refrigerant circulating system; the secondary refrigerant condensation circulating system comprises a condenser tube pass, a water pump and an evaporator, and the secondary cooler condensation circulating system is connected with the heat source tower chilled water system.
The shell pass of the secondary refrigerant generator, the shell pass of the condenser and the combined type injection evacuation system are connected to form a secondary refrigerant closed system, and the combined type injection evacuation system injects and evacuates a secondary refrigerant space in the closed system into negative pressure.
The secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and the secondary refrigerant which is discharged from the closed system and enters the closed system and has low concentration is subjected to heat exchange.
The working process of the invention is as follows:
A. and (3) starting the secondary refrigerant evaporation circulating system to operate:
(1) the combined injection evacuating device operates to connect the shell pass of the generator, the shell pass of the condenser and the combined injection evacuating system to form a secondary refrigerant closed system for evacuating;
(2) the liquid inlet electromagnetic valve is powered on and opened, the secondary refrigerant enters the generator shell side, the liquid inlet electromagnetic valve is powered off and closed after the secondary refrigerant reaches the liquid level height of the generator, the vacuum degree detected by the vacuum detection meter on the generator shell side reaches the set requirement, and the combined type injection evacuator continuously operates.
B. The refrigerant circulating system and the secondary refrigerant condensing circulating system operate:
(1) electrifying a compressor of the refrigerant circulating system, electrifying a bypass electromagnetic valve in the secondary refrigerant condensing circulating system, carrying out heat exchange on a high-temperature refrigerant of a generator tube side and the secondary refrigerant of a generator shell side, and evaporating water in the secondary refrigerant at low temperature under negative pressure to form low-temperature steam;
(2) water evaporation flows from the shell side of the generator to the shell pipe of the condenser under pressure;
(3) the chilled water of the heat source tower flows to the tube pass of the condenser through an electric three-way valve in the refrigerant condensation circulating system, and exchanges heat with the water vapor of the shell pass, and the water vapor is condensed into water and stored at the bottom of the condenser;
(4) after the condenser low-temperature sensor Tld detects that the temperature of the condensed water reaches a set temperature, a bypass electromagnetic valve in the secondary refrigerant condensation circulating system is closed, and an electric three-way valve is electrically opened;
(5) and when the concentration of the generator shell side secondary refrigerant rises, the liquid outlet electromagnetic valve is electrified and opened, the high-concentration secondary refrigerant is discharged, the liquid level drops, the liquid inlet electromagnetic valve is electrified and opened, and the low-concentration secondary refrigerant is replenished.
Has the advantages that:
the invention has simple structure, small occupied space, high energy efficiency and low cost, maintains the stable concentration of the secondary refrigerant in the heat source tower, ensures that the system safely and stably provides heat for users and ensures that the system safely and stably provides heat for users in a low-temperature environment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
as shown in the figure: a secondary refrigerant evaporation circulating system 1, a refrigerant circulating system 2 and a secondary refrigerant condensation circulating system 3.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A heat source tower efficient dehydration maintaining system comprises a secondary refrigerant evaporation circulating system 1, a refrigerant circulating system 2 and a secondary refrigerant condensation circulating system 3; the secondary refrigerant evaporation circulating system 1 comprises a secondary refrigerant generator, a combined type injection evacuating device and a secondary refrigerant heat recovery heat exchange circulating device; the secondary refrigerant evaporation circulating system 1 is connected with a secondary refrigerant storage container in a heat source tower water system through a secondary refrigerant heat recovery heat exchange circulating device; the secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and carries out heat exchange on high-temperature secondary refrigerant discharged from the closed system and low-concentration secondary refrigerant entering the closed system.
The refrigerant circulating system 2 comprises an evaporator, a refrigerant-carrying generator, a compressor and a refrigerant throttling device thereof; the high-temperature refrigerant in the refrigerant circulating system 2 is in the secondary refrigerant generator, the secondary cooler in the shell pass is heated and evaporated through the secondary refrigerant generator, and heat exchange is carried out between the evaporator and the secondary refrigerant condensation circulating system 3 to form a closed refrigerant circulating system; the secondary refrigerant condensation circulating system 3 comprises a condenser tube pass, a water pump and an evaporator, and the secondary cooler condensation circulating system is connected with the heat source tower chilled water system.
The shell pass of the secondary refrigerant generator, the shell pass of the condenser and the combined type injection evacuation system are connected to form a secondary refrigerant closed system, and the combined type injection evacuation system injects and evacuates a secondary refrigerant space in the closed system into negative pressure.
The secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and the secondary refrigerant which is discharged from the closed system and enters the closed system and has low concentration is subjected to heat exchange.
The working process of the invention is as follows:
A. the secondary refrigerant evaporation cycle system 1 starts to operate:
(1) the combined injection evacuating device operates to connect the shell pass of the generator, the shell pass of the condenser and the combined injection evacuating system to form a secondary refrigerant closed system for evacuating;
(2) the liquid inlet electromagnetic valve is powered on and opened, the secondary refrigerant enters the shell pass of the generator, the liquid inlet electromagnetic valve is powered off and closed after the secondary refrigerant reaches the liquid level height of the generator, the vacuum degree detected by a vacuum detection meter on the shell pass of the generator meets the set requirement, and the combined type injection evacuator continuously operates.
B. The refrigerant circulating system 2 and the secondary refrigerant condensing circulating system 3 operate:
(1) a compressor of the refrigerant circulating system 2 is electrified to operate, a bypass electromagnetic valve in the secondary refrigerant condensing circulating system 3 is electrified, a high-temperature refrigerant of a generator tube side exchanges heat with a secondary refrigerant of a generator shell side, and water in the secondary refrigerant is evaporated at low temperature under negative pressure to form low-temperature steam;
(2) water evaporation flows from the shell side of the generator to the shell pipe of the condenser under pressure;
(3) the chilled water of the heat source tower flows to the tube pass of the condenser through an electric three-way valve in the cold-medium condensing and circulating system 3, and exchanges heat with the water vapor of the shell pass, and the water vapor is condensed into water and stored at the bottom of the condenser;
(4) after the condenser low-temperature sensor Tld detects that the temperature of the condensed water reaches the set temperature, a bypass electromagnetic valve in the secondary refrigerant condensation circulating system 3 is closed, and an electric three-way valve is electrically opened;
(5) when the concentration of the generator shell pass secondary refrigerant rises, the liquid outlet electromagnetic valve is electrified and opened, the high-concentration secondary refrigerant is discharged, the liquid level falls, the liquid inlet electromagnetic valve is electrified and opened, and the low-concentration secondary refrigerant is supplemented.
When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on or indirectly connected to the other element, and when an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.
The terms of orientation such as left, right, up, down, etc. in the present embodiment are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A high-efficient dehydration of heat source tower maintains system which characterized in that: the system comprises a secondary refrigerant evaporation circulating system, a refrigerant circulating system and a secondary refrigerant condensation circulating system, wherein the secondary refrigerant evaporation circulating system comprises a secondary refrigerant generator, a combined type injection evacuating device and a secondary refrigerant heat recovery heat exchange circulating device, and the secondary refrigerant evaporation circulating system is connected with a secondary refrigerant storage container in a heat source tower water system through the secondary refrigerant heat recovery heat exchange circulating device; the secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and carries out heat exchange on the high-temperature secondary refrigerant discharged from the closed system and the low-concentration secondary refrigerant entering the closed system.
2. The system of claim 1, wherein the heat source tower is configured to: the refrigerating fluid circulating system comprises an evaporator, a secondary refrigerant generator, a compressor and a refrigerant throttling device which are connected, wherein a high-temperature refrigerating fluid in the refrigerating fluid circulating system is heated and evaporated in a shell pass through the secondary refrigerant generator in the secondary refrigerant generator, heat exchange is carried out between the evaporator and a secondary refrigerant condensation circulating system, the secondary refrigerant condensation circulating system comprises a condenser tube pass, a water pump and an evaporator, and the secondary refrigerant condensation circulating system is connected with a heat source tower chilled water system.
3. A heat source tower efficient dewatering maintenance system as defined in claim 2, wherein: the shell pass of the secondary refrigerant generator, the shell pass of the condenser and the combined type injection and evacuation system are connected to form a secondary refrigerant closed system, and the combined type injection and evacuation system injects and evacuates the secondary refrigerant in the closed system into negative pressure.
4. The system of claim 1, wherein: the secondary refrigerant heat recovery heat exchange circulating device comprises an anti-corrosion heat exchanger, a liquid inlet and outlet electromagnetic valve and a concentrated solution water pump, and high-temperature secondary refrigerant discharged from the closed system and low-concentration secondary refrigerant entering the closed system are subjected to heat exchange.
5. The system of claim 1, wherein: the working process of the efficient dehydration maintaining system of the heat source tower comprises the following steps:
A. and (3) starting the secondary refrigerant evaporation circulating system to operate:
(1) the combined injection evacuating device operates to connect the shell pass of the generator, the shell pass of the condenser and the combined injection evacuating system to form a secondary refrigerant closed system for evacuating;
(2) the liquid inlet electromagnetic valve is powered on and opened, the secondary refrigerant enters the shell pass of the generator, the liquid inlet electromagnetic valve is powered off and closed after the secondary refrigerant reaches the liquid level height of the generator, the vacuum degree detected by a vacuum detection meter on the shell pass of the generator meets the set requirement, and the combined type injection evacuator continuously operates.
B. The refrigerant circulating system and the secondary refrigerant condensing circulating system operate:
(1) electrifying a compressor of the refrigerant circulating system, electrifying a bypass electromagnetic valve in the secondary refrigerant condensing circulating system, carrying out heat exchange on a high-temperature refrigerant of a generator tube side and the secondary refrigerant of a generator shell side, and evaporating water in the secondary refrigerant at low temperature under negative pressure to form low-temperature steam;
(2) water evaporation flows from the shell side of the generator to the shell pipe of the condenser under pressure;
(3) the chilled water of the heat source tower flows to the tube pass of the condenser through an electric three-way valve in the refrigerant condensation circulating system, and exchanges heat with the water vapor of the shell pass, and the water vapor is condensed into water and stored at the bottom of the condenser;
(4) after the condenser low-temperature sensor Tld detects that the temperature of the condensed water reaches a set temperature, a bypass electromagnetic valve in the secondary refrigerant condensation circulating system is closed, and an electric three-way valve is electrically opened;
(5) and when the concentration of the generator shell side secondary refrigerant rises, the liquid outlet electromagnetic valve is electrified and opened, the high-concentration secondary refrigerant is discharged, the liquid level drops, the liquid inlet electromagnetic valve is electrified and opened, and the low-concentration secondary refrigerant is replenished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177459.3A CN114526559B (en) | 2022-02-25 | 2022-02-25 | High-efficient dehydration of heat source tower maintains system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177459.3A CN114526559B (en) | 2022-02-25 | 2022-02-25 | High-efficient dehydration of heat source tower maintains system |
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| Publication Number | Publication Date |
|---|---|
| CN114526559A true CN114526559A (en) | 2022-05-24 |
| CN114526559B CN114526559B (en) | 2024-01-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438614A (en) * | 2013-09-02 | 2013-12-11 | 东南大学 | Solution regenerating device achieving controllable condensation based on vacuum boiling |
| CN103807946A (en) * | 2014-01-26 | 2014-05-21 | 浙江理工大学 | Distillation regeneration device of heat source tower antifreeze solution |
| US20200278135A1 (en) * | 2019-02-28 | 2020-09-03 | Jong-woo Park | Intelligent heat pump system having dual heat exchanger structure |
| CN111870975A (en) * | 2020-06-11 | 2020-11-03 | 岳玉亮 | Solution concentration device for heat source tower system |
| US20210254864A1 (en) * | 2020-02-14 | 2021-08-19 | Epta S.P.A. | Vapor compression refrigeration system and method of operating such a system |
-
2022
- 2022-02-25 CN CN202210177459.3A patent/CN114526559B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438614A (en) * | 2013-09-02 | 2013-12-11 | 东南大学 | Solution regenerating device achieving controllable condensation based on vacuum boiling |
| CN103807946A (en) * | 2014-01-26 | 2014-05-21 | 浙江理工大学 | Distillation regeneration device of heat source tower antifreeze solution |
| US20200278135A1 (en) * | 2019-02-28 | 2020-09-03 | Jong-woo Park | Intelligent heat pump system having dual heat exchanger structure |
| US20210254864A1 (en) * | 2020-02-14 | 2021-08-19 | Epta S.P.A. | Vapor compression refrigeration system and method of operating such a system |
| CN111870975A (en) * | 2020-06-11 | 2020-11-03 | 岳玉亮 | Solution concentration device for heat source tower system |
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| CN114526559B (en) | 2024-01-30 |
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