CN201096429Y - Compact highly effective dual-operation cooling tower heat reclamation energy-saving device - Google Patents

Compact highly effective dual-operation cooling tower heat reclamation energy-saving device Download PDF

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Publication number
CN201096429Y
CN201096429Y CNU200720128266XU CN200720128266U CN201096429Y CN 201096429 Y CN201096429 Y CN 201096429Y CN U200720128266X U CNU200720128266X U CN U200720128266XU CN 200720128266 U CN200720128266 U CN 200720128266U CN 201096429 Y CN201096429 Y CN 201096429Y
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China
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heat
cooling tower
valve
pipeline
water
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Expired - Fee Related
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CNU200720128266XU
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张宪金
王军成
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张宪金
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • Y02A40/963Off-grid food refrigeration
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18Domestic hot-water supply systems using recuperated or waste heat
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

The utility model relates to an industrial (chemical, pharmacy) or civil (food processing, modern construction) medium and low temperature (20-50 DEG C) cooling tower waste heat recovery device. The heat recovery device utilizes the low grade heat source discharged by a cooling tower to acquire the high grade energy source, meanwhile meeting different water temperature requirements on an energy-saving device by different heat users. The device mainly comprises two portions of a double-duty heat recovery unit portion and a cooling tower and heat user connecting water system portion. The heat recovery unit mainly comprises five members of a screw high temperature compressor, a cooling tower anticorrosion total heat exchanger, a primary and assistant condenser, an electronic expansion valve as well as an accessory vapor liquid separator, a liquid accumulator and a filter. The water system portion mainly includes a circulation pump, a pipeline and a valve. The alternate operation double-duty operational mechanism of the primary and assistant condenser and the whole condenser heat exchanger is adopted when supplying the hot water. Therefore, the device has rather high efficiency and energy efficiency ratio.

Description

Compact efficient duplex condition cooling tower heat recovery energy-saving device
Affiliated technical field
The utility model technology relates in a kind of industrial (chemical industry, pharmacy industry) or civilian (food processing industry, modern architecture), low temperature (20~50 ℃) cooling tower waste-heat recovery device.
Background technology
, usually need to get rid of industrial waste heat in order to satisfy the technological requirement of industrial products at some chemical industry, pharmacy corporation by cooling tower.Simultaneously at some civil areas, such as, used for cooling tower also is set usually to get rid of central air-conditioning condensing heat and food processing is freezing, the condensation heat of refrigerating equipment operation in some modern architectures and food processing enterprises.On the one hand, a large amount of low grade heat energies without any processing directly is discharged into and causes environmental thermal pollution in the atmosphere, also causes the significant wastage of the energy simultaneously.On the other hand, in some enterprises, because the product technological requirement needs the heat energy than high-grade again.Equally, people also need the stable domestic hot-water and the heat supply in winter hot water (more than 65 ℃) of a large amount of 40-50 ℃ safety in daily life.At present, just simple some heat exchange equipments of installing in some heat recovery technologies, this recuperation of heat mode is not only bulky, and heat recovery efficiency is low, and is subjected to the influence of surrounding environment and cooling tower operating condition, poor stability.
Summary of the invention
In order to overcome the recuperation of heat poor stability of prior art, applying working condition is narrow, especially in the inefficient characteristics of obtaining the hot water of higher temperature (more than 65 ℃) recuperation of heat.This practical technology provides a kind of under the situation that middle low temperature (20-50 ℃) water cooling tower is arranged, and can obtain stable 55-60 ℃ middle warm water and 70-75 ℃ high-temperature water.And simultaneously when summer, can partly provide building dry cooling condition (15-20 ℃ low temperature cold source) cooling.The utility model technology is to utilize the energy saver of low-grade heat source that cooling tower discharges.The utility model technology is characterised in that: the alternate run that has adopted major and minor condenser and whole condenser heat exchanger in cooling tower recuperation of heat unit.Thereby form the duplexing condition operating mechanism of recuperation of heat unit.So when hot-water supply, can guarantee the operation normally and efficiently of unit.In hot user's design of pipe networks, by switching valve, promptly can realize the process of being rapidly heated, can satisfy in same system different user again to the requirement of different water temperatures.Therefore, whole energy saver has higher usefulness efficient and Energy Efficiency Ratio.Especially, in the air-condition cooling tower system applies, also can improve simultaneously the refrigerating efficiency of refrigeration host computer.
The technical scheme that its technical problem that solves the utility model adopts is:
Utilize the Carnot cycle principle to choose the hot machine of suitable working medium.Thereby realize by consuming less electric energy: high temperature (55-80 ℃) thermal source is flowed to user's use side.During part or all is transferred to low temperature (15-20 ℃) thermal source, low temperature (20-50 ℃) cooling tower, part or all is in order to building dry cooling condition cooling in addition.By such one independently compact efficient duplex condition cooling tower heat recovery energy-saving device realize transfer of heat work.
For realizing the purpose of this utility model, described compact efficient duplex condition cooling tower heat recovery energy-saving device mainly comprises two parts: duplexing condition recuperation of heat unit part is connected the water system part with cooling tower, hot user.Duplex condition recuperation of heat unit mainly contains five big members and forms: the high temperature compressed machine of screw, the corrosion-resistant full heat-heat exchanger of cooling tower, major and minor condenser, electric expansion valve and annex vapour liquid separator, reservoir and filter.Cooling tower, hot user connect the water system part and mainly comprise water circulating pump, pipeline, by-pass valve control and magnetic valve (motor-driven valve), heat supply water tank or expansion tank.
Duplex condition recuperation of heat unit is partly for all being called for short ' unit ' below the summary conveniently.On the pipeline between the inlet of the sender property outlet pipeline of the vapour liquid separator of unit and major and minor condenser, be connected to the high temperature compressed machine of screw.Between the sender property outlet pipeline of the electric expansion valve of the working medium entrance pipe of unit vapour liquid separator and unit, the full heat-heat exchanger of corrosion-resistant cooling tower is housed.On the export pipeline of the inlet duct of the working medium of unit electric expansion valve and working medium reservoir, be connected with the working medium filter.The working medium reservoir is connected between the entrance pipe and the major and minor condenser sender property outlet of unit pipeline of working medium of machine set filter.The major and minor condenser of the full heat-heat exchanger of cooling tower, unit and cooling tower heat exchanger all have the heat exchanger of two pairs of turnover pipelines.The full heat-heat exchanger of the corrosion-resistant cooling tower of unit is connected in series to water inlet (or backwater) pipeline of the cooling circulating water of the cooling tower that has the cool cycles water pump, and is provided with the bypass pipe that has electric control valve simultaneously.Locate to be connected before the pipeline valve before the full heat-heat exchanger sys node of bypass pipe and cooling tower, be equipped with on the pipeline of two tee pipe fitting one ends that the dry cooling condition cooling that has electric control valve advances, water return pipeline with tee pipe fitting.The thermal cycling pipe part: the end at the unit main condenser links to each other with the circulation water for heating pump, and the backwater of circulation water for heating pump is connected with the hot user of parallel connection and the water return pipeline of heat supply water tank or expansion tank.One end of secondary condenser is connected with heat supply water tank or expansion tank inlet pipeline.Between main condenser and secondary condenser import and export and connecting pipe, be provided with four electric control valves (magnetic valve), by changing and controlling these four electric control valves (magnetic valve) and can realize that complete hot condensing heat-exchange and master or secondary condenser replace the conversion of heat exchange.Reached the requirement of different hot users to different water temperatures.For the temperature difference high in improving, the warm water, do not worsen the operating mode of recuperation of heat unit, at main condenser hot water backwater mouth shunting electric control valve (magnetic valve) has been installed.Realize using the cooling tower heat exchanger by a motorized adjustment method (magnetic valve) and a temperature control valve (TCV) again and stablize the unit safety operation operating mode.On different hot users' water return pipeline, also be provided with temperature control valve (TCV) simultaneously, when arriving design temperature, close or turn down hot user's circulating water flow, to save system's energy.
Useful result of the present utility model is, it just low temperature (15-20 ℃) thermal source part or all transfer in, reduced environmental thermal pollution in low temperature (20 ~ 50 ℃) cooling tower.And stable 55-65 ℃ middle warm water and 75-80 ℃ high-temperature-hot-water have been obtained simultaneously.And, building dry cooling condition (15 ~ 20 ℃ low temperature cold sources) cooling can partly be provided when summer.Because, adopt duplexing condition recuperation of heat unit when hot-water supply, can either guarantee the operation normally and efficiently of unit, can satisfy the requirement of different hot users again simultaneously to the hot-water supply temperature.So whole energy saver has higher usefulness efficient and Energy Efficiency Ratio.Especially, in using, central air conditioner system also improved the refrigerating efficiency of refrigeration host computer.
Description of drawings
Below in conjunction with drawings and Examples the utility model technology is further specified.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the structural representation of duplexing condition recuperation of heat unit
Fig. 3 is different hot users and duplexing condition recuperation of heat unit connection layout
Among the figure: the high temperature compressed machine of 1 screw; 2 secondary condensers; 3 main condensers; 4 reservoirs; 5 machine set filters, 6 electric expansion valves; The corrosion-resistant full heat-heat exchanger of 7 cooling towers; 8 vapour-liquid height separators; 9,12,13,14 hot user's heat supply running change working motor-driven valves (magnetic valve); 10 fens manifold solenoid valves; 11 cooling tower heat exchangers; 15 circulation water for heating pumps; 16 cooling-tower circulating water pumps; 17 cooling tower circulation check-valves; The corrosion-resistant full heat-heat exchanger bypass electric control valve of 18 cooling towers; 19, cooling tower water flow electric control valve; 20, stop valve; 21,22 dry cooling condition cooling discharge electric control valves, backwater stop valve.23,26 hot users or pipe network temperature control valve (TCV); 25,28 hot user's water supply shut-off valves; Warm user's pipe network in 24; 27 high temperature user pipe networks; 29 water make-up check valves; 30 heat supply water tank or expansion tanks; 31,32 cooling tower heat exchange temperature control valve (TCV)s, motor-driven valve (magnetic valve);
Specific embodiment
Embodiment as Fig. 1 with shown in, the utility model technical characterictic is: with reference to Fig. 2, the recuperation of heat unit adopts high temperature refrigerant working medium, the working medium of gaseous state becomes the gaseous working medium of HTHP after through the high temperature compressed machine 1 compression work done of screw in vapour liquid separator 8.The high-pressure liquid working medium with certain degree of supercooling of the gaseous working medium of HTHP through becoming after the major and minor condenser heat exchange 3,2, unnecessary a part of liquid refrigerant is stored in the reservoir 4.HTHP working medium enters electric expansion valve 6 through behind the filter 5, and liquid refrigerant becomes saturated cryogenic gaseous working medium after throttling expansion.Cryogenic gaseous working medium is carried out exchange heat in the corrosion-resistant full heat-heat exchanger 7 of cooling tower, absorb heat to cooling tower.For preventing that liquid cryogenic fluid from sucking the high temperature compressed machine 1 of screw, working medium is flowed through and is entered the high temperature compressed machine 1 of screw behind the vapour liquid separator 8, finishes a cycle period.
Major and minor condenser 2,3 and hot user's heat transfer process are referring to Fig. 3.Under the original state condition: open branch manifold solenoid valve 10, hot user's heat supply running change working motor-driven valve (magnetic valve) 12,13, hot user's water supply shut-off valve 25,28, hot user or pipe network temperature control valve (TCV) 23,26.Close other each valves.At this moment warm user's pipe network 24 and high temperature user pipe network 27 absorb major and minor condenser 2,3 condenser heats that discharged simultaneously in.In the middle of warm user's pipe network 24 and high temperature user pipe network 27 in reaching jointly during warm user's pipe network temperature requirement normal operation of the middle temperature user's pipe network temperature≤unit main condenser 3 (time mean temperature), close hot user's heat supply running change working motor-driven valve (magnetic valve) 12,13.Open hot user's heat supply running change working motor-driven valve (magnetic valve) 9,14.At this moment there is the higher secondary condenser of temperature (most of for the condensation sensible heat, as to be latent heat on a small quantity) to supply with heat to high temperature user pipe network 27; The secondary condenser that temperature is lower (latent heat) is to middle temperature user's pipe network 24 heat supplies and insulation.The common return water temperature of central warm user's pipe network 24 and high temperature user pipe network 27 reaches the operating condition that design maybe will worsen the recuperation of heat unit, and when not reaching the temperature requirement of high temperature user pipe network 27 of design: close branch manifold solenoid valve 10, the hot user motor-driven valve (magnetic valve) 25 that supplies water.Open cooling tower heat exchange temperature control valve (TCV), motor-driven valve (magnetic valve) 31,32 carries out the normal operation that exchange heat has satisfied the recuperation of heat unit to cooling tower heat exchanger 11.
The full heat-heat exchanger 7 of the corrosion-resistant cooling tower of unit is connected in series to water inlet (or backwater) pipeline of the cooling circulating water of the cooling tower that has cool cycles water pump 16, and is provided with the bypass pipe that has electric control valve 18 simultaneously.
During the operation of cooling Tata heat recovery machine group, in summer, if building needs cooling.As long as open dry cooling condition cooling discharge electric control valve, backwater stop valve 21,22.
As mentioned above, if source pump adopts R22 working medium, middle temperature user's pipe network 24 can obtain 45-50 ℃ in warm source, when high temperature user pipe network 27 obtained 55-60 ℃ high temperature heat source, unit operation efficient was higher.If source pump adopts high temperature refrigerant, middle temperature user's pipe network 24 can obtain 55-60 ℃ in warm source, when high temperature user pipe network 27 obtained 70-75 ℃ high temperature heat source, unit operation efficient was also very high.Adopt major and minor condenser alternate run recuperation of heat (heat shifts) can satisfy the requirement of different hot users to the hot-water supply temperature.
In sum, this energy saver compact conformation, operation is efficient, energy-saving effect is obvious.And the operating condition wide ranges, the stable performance of recuperation of heat.Owing to low-temperature receiver is transferred to cooling tower, so reduced environmental thermal pollution.

Claims (4)

1. a compact efficient duplex condition cooling tower heat recovery energy-saving device is characterized in that: comprise two parts, duplexing condition recuperation of heat unit part is connected the water system part with cooling tower, hot user.
2. it is characterized in that according to right 1 described compact efficient duplex condition cooling tower heat recovery energy-saving device: in duplexing condition recuperation of heat unit part, the sender property outlet pipeline and the master of vapour liquid separator (8), secondary condenser (3,2) be connected to the high temperature compressed machine of screw (1) on the pipeline between the inlet, main, secondary condenser (3,2) be connected in series, between the sender property outlet pipeline of the working medium entrance pipe of vapour liquid separator (8) and electric expansion valve (6), the full heat-heat exchanger of corrosion-resistant cooling tower (7) is housed, on the export pipeline of the inlet duct of the working medium of electric expansion valve (6) and working medium reservoir (4), be connected with working medium filter (5), working medium reservoir (4) is connected in the entrance pipe and the unit master of the working medium of filter (5), secondary condenser (3,2) between the sender property outlet pipeline, the full heat-heat exchanger of cooling tower (7), the master of unit, secondary condenser (3,2) all have two pairs of heat exchangers that pass in and out pipelines.
3. it is characterized in that according to right 1 described compact efficient duplex condition cooling tower heat recovery energy-saving device: connect the water system part at cooling tower, the full heat-heat exchanger of corrosion-resistant cooling tower (7) serial connection is to water inlet (or backwater) pipeline of the cooling circulating water of the cooling tower that has cool cycles water pump (16), and be provided with the bypass pipe that has electric control valve (18) simultaneously, the preceding place of pipeline valve (18) before the full heat-heat exchanger of bypass pipe and cooling tower (7) sys node is connected with tee pipe fitting, is equipped with to have electric control valve (21 on the pipeline of two tee pipe fitting one ends, 22) dry cooling condition cooling advances, water return pipeline.
4. it is characterized in that according to right 1 described compact efficient duplex condition cooling tower heat recovery energy-saving device: be connected the water system part with hot user in duplexing condition recuperation of heat unit part, end at unit main condenser (3) links to each other with the outlet pipeline of circulation water for heating pump (15) by an electric control valve (10), on the pipeline between this electric control valve (10) and the main condenser (3), be connected with cooling tower heat exchanger (11) by motor-driven valve (32), the cooling tower heat exchanger has the heat exchanger of two pairs of turnover pipelines, the backwater of circulation water for heating pump (15) and hot user (24 in parallel, 27) backwater is connected with the water return pipeline of heat supply water tank or expansion tank (30), the bottom of heat supply water tank or expansion tank (30) is connected with hot user (27) by stop valve (28), one end of secondary condenser (2) is connected with heat supply water tank or expansion tank (30) inlet pipeline, between main condenser (3) and secondary condenser (2) import and export pipeline, motor-driven valve (or magnetic valve) (12) is set, motor-driven valve or magnetic valve (14) one ends are connected between the pipeline of motor-driven valve (or magnetic valve) (12) and secondary condenser (2), the other end is connected between the pipeline of motor-driven valve (or magnetic valve) (10) and circulation water for heating pump (15), motor-driven valve or magnetic valve (9) one ends are connected between the pipeline of motor-driven valve (or magnetic valve) (12) and main condenser (3), the other end and three motor-driven valves or magnetic valve (13,25,31) a end is connected, the other end of motor-driven valve or magnetic valve (13) links to each other with secondary condenser (2), the other end of motor-driven valve or magnetic valve (25) links to each other with hot user (24), the other end of motor-driven valve or magnetic valve (31) is connected with cooling tower heat exchanger (11), be provided with temperature control valve (TCV) (23) on hot user (24) water return pipeline, be provided with temperature control valve (TCV) (26) on hot user's (27) the water return pipeline.
CNU200720128266XU 2007-07-26 2007-07-26 Compact highly effective dual-operation cooling tower heat reclamation energy-saving device Expired - Fee Related CN201096429Y (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566716A (en) * 2014-12-26 2015-04-29 灵宝金源朝辉铜业有限公司 Novel circulating water pump station system
CN104833135A (en) * 2015-06-03 2015-08-12 铜陵新梦想农牧科技有限公司 Energy-saving type refrigerating system for refrigeration storage
CN106152228A (en) * 2015-03-10 2016-11-23 中能世华(北京)节能科技有限公司 A kind of hair power plant heat utilization system
WO2016192293A1 (en) * 2015-06-04 2016-12-08 特灵空调系统(中国)有限公司 Water cooling machine capable of simultaneously outputting water at different temperatures
CN106288486A (en) * 2016-08-25 2017-01-04 东南大学 Collecting and distributing type heat pump based on heat source tower
CN108050737A (en) * 2017-12-13 2018-05-18 阳谷祥光铜业有限公司 A kind of recirculated water heat-energy recovering apparatus and method
CN110173912A (en) * 2019-04-29 2019-08-27 同济大学 A kind of the mixed working fluid compression circulatory system and working method of the recuperation of heat of band machinery

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566716A (en) * 2014-12-26 2015-04-29 灵宝金源朝辉铜业有限公司 Novel circulating water pump station system
CN104566716B (en) * 2014-12-26 2017-04-26 灵宝金源朝辉铜业有限公司 Novel circulating water pump station system
CN106152228A (en) * 2015-03-10 2016-11-23 中能世华(北京)节能科技有限公司 A kind of hair power plant heat utilization system
CN104833135A (en) * 2015-06-03 2015-08-12 铜陵新梦想农牧科技有限公司 Energy-saving type refrigerating system for refrigeration storage
WO2016192293A1 (en) * 2015-06-04 2016-12-08 特灵空调系统(中国)有限公司 Water cooling machine capable of simultaneously outputting water at different temperatures
CN106288486A (en) * 2016-08-25 2017-01-04 东南大学 Collecting and distributing type heat pump based on heat source tower
CN106288486B (en) * 2016-08-25 2018-12-14 东南大学 Collecting and distributing type heat pump system based on heat source tower
CN108050737A (en) * 2017-12-13 2018-05-18 阳谷祥光铜业有限公司 A kind of recirculated water heat-energy recovering apparatus and method
CN110173912A (en) * 2019-04-29 2019-08-27 同济大学 A kind of the mixed working fluid compression circulatory system and working method of the recuperation of heat of band machinery
CN110173912B (en) * 2019-04-29 2020-10-02 同济大学 Mixed working medium compression circulation system with mechanical heat recovery function and working method

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