WO2017004987A1 - 一种全工况运行的预凝式热源塔装置 - Google Patents
一种全工况运行的预凝式热源塔装置 Download PDFInfo
- Publication number
- WO2017004987A1 WO2017004987A1 PCT/CN2016/073262 CN2016073262W WO2017004987A1 WO 2017004987 A1 WO2017004987 A1 WO 2017004987A1 CN 2016073262 W CN2016073262 W CN 2016073262W WO 2017004987 A1 WO2017004987 A1 WO 2017004987A1
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- WIPO (PCT)
- Prior art keywords
- solution
- heat source
- source tower
- electric
- sump
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
Definitions
- the partial pressure of water vapor in the air is much greater than the partial pressure of water vapor on the surface of the solution. Since the inlet of the heat source tower is under negative pressure, the water droplets in the air around the heat source tower will be easily sucked into the tower with the incoming air, resulting in The drop in solution concentration is more serious and the solution regeneration load increases sharply.
- the function of the heat source tower is equivalent to the cooling tower.
- the condensing heat of the chiller is mainly evaporated by the partial cooling water in the tower to dissipate the condensed heat into the environment, thereby generating a large amount of cooling water consumption. Not a very rich area, it is a constraint.
- the present invention provides a solution regeneration load that can reduce the heat source tower heat pump unit under various working conditions in winter heating operation, reduce solution regeneration energy consumption, reduce cooling water consumption during summer cooling operation, and improve heat source tower heat pump.
- the pre-condensation heat source tower device operated under full operating conditions of the system in winter and summer.
- the heat exchanger solution inlet, the finned tube heat exchanger solution outlet is connected to the first input end of the liquid collecting tank, the second electric three-way valve second outlet is connected to the inlet of the spraying device, and the spraying device is located in the fin tube exchange Directly above the heat exchanger, the liquid collecting tank is located directly below the finned tube heat exchanger, and the outlet of the liquid collecting tank is divided into two paths, one passage through the first electromagnetic valve to the second input end of the liquid collecting tank, and the other passing through the first
- the second electromagnetic valve is connected to the water outlet of the heat source tower; the finned tube heat exchanger is also an integral part of the air circuit;
- the air circuit includes a baffle, a finned tube heat exchanger, a packing, a liquid trap, a fan, and a connecting passage thereof.
- the baffle is located at a lower side of the heat source tower and outside the finned tube heat exchanger, the filler is located in the middle of the heat source tower, the liquid trap is located above the liquid trap, and the fan is located at the liquid trap Above.
- the main solution circuit and the pre-condensation and spray frost suppression circuit are connected in parallel, and the solution or the cooling water enters from the solution inlet end of the heat source tower, and is connected in parallel after passing through the first electric three-way valve.
- the form is divided into two strands, which respectively enter the main solution loop and the pre-condensation and spray frost suppression loops, and are collected in the sump.
- the fin-and-tube heat exchanger pre-condenses moisture in the air entering the heat source tower, and prevents raindrops caused by negative pressure of the air inlet of the heat source tower in rainy or foggy weather. Or mist inhalation Inside the heat source tower.
- the spray device can spray the solution of the low freezing point on the fin-tube heat exchanger directly below the spray tube, and collect the spray in the liquid collection tank directly below the fin-tube heat exchanger.
- the solution when the first electromagnetic valve is opened and the second electromagnetic valve is closed, the collected solution is merged into the liquid collecting tank to ensure stable operation of the finned tube heat exchanger and fully utilize the heat exchange area.
- the figure includes: fan 1, liquid receiver 2, liquid distributor 3, packing 4, finned tube heat exchanger 5, finned tube heat exchanger solution inlet 5a, finned tube heat exchanger solution outlet 5b, first Electric three-way valve 6, first electric three-way valve inlet 6a, first electric three-way valve first outlet 6b, first electric three-way valve second outlet 6c, second electric three-way valve 7, and second electric three-way Valve inlet 7a, second electric three-way valve first outlet 7b, second electric three-way valve second outlet 7c, first solenoid valve 8, second solenoid valve 9, shower device 10, deflector 11, collecting liquid The tank 12, the sump 13, the sump output end 13a, the sump first input end 13b, and the sump second input end 13c.
- the main solution circuit includes a liquid distributor 3, a packing 4, a liquid collecting tank 13, a first electric three-way valve 6 and a connecting pipe thereof arranged in order from the top to the bottom; in the main solution circuit, the solution inlet end of the heat source tower is connected first.
- An electric three-way valve inlet 6a, a first electric three-way valve first outlet 6b is connected to the inlet of the liquid distributor 3, the packing 4 is located directly below the liquid distributor 3, and the liquid collecting tank 13 is located directly below the packing 4.
- the sump output end 13a is connected to the solution outlet end of the heat source tower; the first electric three-way valve 6 and the sump 13 are simultaneously a group of pre-condensation and spray frost suppression circuits.
- the filler 4 is simultaneously an integral part of the air circuit;
- the air circuit comprises a baffle 11, a finned tube heat exchanger 5, a packing 4, a liquid trap 2, a fan 1 and a connecting passage thereof, the deflector 11 being located at a lower side of the heat source tower and at the finned tube heat exchanger On the outside of the 5, the packing 4 is located in the middle of the heat source tower, the liquid trap 2 is located above the liquid trap 3, and the blower 1 is located above the liquid trap 2.
- the specific method of the present invention is that the heat source tower winter heating operation is divided into two modes, a winter heating non-frosting mode and a winter heating frosting mode.
- the end flows out and enters the evaporator of the heat pump unit.
- the solution in the fin-tube heat exchanger 5 is The air is heat exchanged, the fin surface temperature of the finned tube heat exchanger 5 is lower than the air dew point temperature, and the moisture in the air is condensed on the fin surface of the finned tube heat exchanger 5, and the condensed water is transferred from the finned tube heat exchanger 5 Fin surface dripping backward flow
- the first solenoid valve 8 is closed, the second solenoid valve 9 is opened, and the condensed water flows out of the sump 12 and then flows out from the drain port of the heat source tower through the second solenoid valve 9.
- the solution is divided into two paths in the second electric three-way valve 7, and one solution flows out from the first outlet 7b of the second electric three-way valve, enters the fin-tube heat exchanger 5, and the solution exchanges heat in the finned tube
- the second outlet 7c of the valve flows out, and the solution enters the spraying device 10 to dissolve
- the liquid is sprayed onto the fin surface of the fin-and-tube heat exchanger 5, and the fin surface temperature of the fin-and-tube heat exchanger 5 is lower than the air dew point due to heat exchange between the solution in the fin-and-tube heat exchanger 5 and the air.
- the first electromagnetic valve 8 flows into the liquid collecting tank 13, and the solution whose temperature rises in the liquid collecting tank 13 flows out from the liquid collecting tank output end 13a through the solution outlet end of the heat source tower, and enters the evaporator of the heat pump unit.
- the air in the environment enters the finned tube heat exchanger 5 via the deflector 11 under the suction of the fan 1, and exchanges heat with the solution therein, at which time the moisture in the air will be in the finned tube heat exchanger 5.
- the surface of the fin is frosted, the air temperature is lowered, the air flows out of the fin-and-tube heat exchanger 5, and then enters the packing 4.
- the heat and mass transfer is carried out with the solution in the packing 4, and the air releases heat, and the temperature thereof is further lowered, and the air is simultaneously
- the water still partially enters the solution, and the air flows out from the upper portion of the filler 4 and enters the liquid trap 2, and the liquid droplets carried in the air are removed by the liquid trap 2.
- the heat source tower heat pump works as a water-cooled chiller. That is, the heat source tower function is equivalent to the cooling tower. At this time, the working medium in the heat source tower is cooling water instead of solution.
- the high-temperature cooling water from the condenser of the heat pump unit enters from the inlet end of the solution of the heat source tower, and is divided into two paths when passing through the first electric three-way valve 6, and one cooling water flows out from the first outlet 6b of the first electric three-way valve to enter the cloth.
- the outlet 6c flows out and enters the second electric three-way valve 7, at which time all the cooling water flows out from the first outlet 7b of the second electric three-way valve, enters the fin-tube heat exchanger 5, and the cooling water is in the fin-tube heat exchanger 5
- the medium exchanges heat with the air, and after the temperature of the cooling water is lowered, it flows out from the fin-tube heat exchanger solution outlet 5b, flows into the sump 13 from the first input end 13b of the sump, and cools after the temperature in the sump 13 is lowered.
- the air in the environment enters the finned tube heat exchanger 5 via the deflector 11 under the suction of the fan 1, where it exchanges heat with the cooling water, and the air temperature rises, and the air is supplied from the finned tube heat exchanger 5 After flowing out, it enters the packing 4, and the cooling water in the packing 4 carries out heat and mass transfer, the air temperature further rises, and the water vapor which is evaporated by the partial cooling water enters the air, and the air flows out from the upper part of the packing 4 and enters the liquid collection.
- the droplets carried in the air will be removed by the liquid trap 2, and the air will flow out of the liquid trap 2 and be sucked and pressurized by the fan 1 to be discharged from the heat source tower.
- the air entering the heat source tower first exchanges heat with the cooling water in the finned tube heat exchanger 5, and after the temperature of the cooling water is lowered, it directly enters the liquid collecting tank 13 and bears the heat source.
- the partial heat load of the tower heat dissipation is equivalent to reducing the amount of heat that the cooling water emits in the filler 4 by the form of water evaporation (ie, The heat load of the filler 4 is lowered, thereby reducing the evaporation water evaporation loss of the heat source tower, thereby realizing water saving while improving system efficiency.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims (5)
- 一种全工况运行的预凝式热源塔装置,其特征在于:该装置包括热源塔塔体和设置在塔体中的主溶液回路、预凝与喷淋抑霜回路和空气回路;所述主溶液回路包括从上至下依次设置的布液器(3)、填料(4)、集液池(13)、第一电动三通阀(6)及其连接管道;所述热源塔的溶液入口端连接第一电动三通阀入口(6a),第一电动三通阀第一出口(6b)连接布液器(3)的入口,所述填料(4)位于布液器(3)的正下方,所述集液池(13)位于填料(4)的正下方且在塔身最底部,集液池输出端(13a)接热源塔的溶液出口端;所述第一电动三通阀(6)和集液池(13)同时是预凝与喷淋抑霜回路的组成部分,所述填料(4)同时是空气回路的组成部分;所述预凝与喷淋抑霜回路包括第一电动三通阀(6)、第二电动三通阀(7)、喷淋装置(10)、翅片管换热器(5)、集液槽(12)、第一电磁阀(8)、第二电磁阀(9)、集液池(13)及其连接管道;第一电动三通阀第二出口(6c)连接第二电动三通阀入口(7a),第二电动三通阀第一出口(7b)连接位于热源塔下部侧面进风位置的翅片管换热器溶液入口(5a),翅片管换热器溶液出口(5b)与集液池第一输入端(13b)相连,第二电动三通阀第二出口(7c)连接喷淋装置(10)的入口,所述喷淋装置(10)位于翅片管换热器(5)的正上方,所述集液槽(12)位于翅片管换热器(5)的正下方,集液槽(12)的出口分成两路,一路通过第一电磁阀(8)接集液池第二输入端(13c),另外一路通过第二电磁阀(9)接热源塔的排水口;所述翅片管换热器(5)同时是空气回路的组成部分;所述空气回路包括导流板(11)、翅片管换热器(5)、填料(4)、收液器(2)、风机(1)及其连接通道,所述导流板(11)位于热源塔下部侧面且在翅片管换热器(5)的外侧,所述填料(4)位于热源塔的中部,所述收液器(2)位于布液器(3)的上方,所述风机(1)位于收液器(2)的上方。
- 根据权利要求1所述的一种全工况运行的预凝式热源塔装置,其特征在于:所述主溶液回路与预凝与喷淋抑霜回路为并列连接,溶液或冷却水从热源塔的溶液入口端进入后,经第一电动三通阀(6)后以并联形式分为两股,分别进入主溶液回路与预凝与喷淋抑霜回路,并在集液池(13)汇集。
- 根据权利要求1所述的一种全工况运行的预凝式热源塔装置,其特征在于,所述翅片管换热器(5)对进入热源塔的空气中的水分进行预凝,并在雨天或大雾天气 时,防止热源塔进风口负压导致的雨滴或雾滴吸入热源塔内部。
- 根据权利要求1所述的一种全工况运行的预凝式热源塔装置,其特征在于,所述喷淋装置(10)能将低冰点的溶液喷淋于其正下方的翅片管换热器(5),位于翅片管换热器(5)正下方的集液槽(12)收集所喷淋溶液,当第一电磁阀(8)开启,第二电磁阀(9)关闭时上述收集的溶液汇入集液池(13),保证翅片管换热器(5)稳定运行,充分利用其换热面积。
- 根据权利要求1所述的一种全工况运行的预凝式热源塔装置,其特征在于,所述热源塔为逆流热源塔或横流热源塔。
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CN201510401944.4A CN104990305B (zh) | 2015-07-09 | 2015-07-09 | 一种全工况运行的预凝式热源塔装置 |
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Cited By (11)
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ES2608912A1 (es) * | 2017-01-23 | 2017-04-17 | Universidad Politécnica De Cartagena | Torre de refrigeración invertida de tiro mecánico |
CN107270740A (zh) * | 2017-07-07 | 2017-10-20 | 河北爱节水泵科技有限公司 | 一种冷却水综合处理系统 |
CN107966043A (zh) * | 2018-01-17 | 2018-04-27 | 酷仑冷却技术(上海)有限公司 | 一种用于焊接管生产线乳化液冷却的绝热闭式冷却系统 |
CN108266832A (zh) * | 2018-02-06 | 2018-07-10 | 贵州电网有限责任公司 | 一种溶液型防结霜复式室外换热装置 |
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ES2608912A1 (es) * | 2017-01-23 | 2017-04-17 | Universidad Politécnica De Cartagena | Torre de refrigeración invertida de tiro mecánico |
CN107270740A (zh) * | 2017-07-07 | 2017-10-20 | 河北爱节水泵科技有限公司 | 一种冷却水综合处理系统 |
CN107270740B (zh) * | 2017-07-07 | 2023-08-11 | 河北爱节能源科技有限公司 | 一种冷却水综合处理系统 |
CN107966043B (zh) * | 2018-01-17 | 2023-11-07 | 酷仑冷却技术(上海)有限公司 | 一种用于焊接管生产线乳化液冷却的绝热闭式冷却系统 |
CN107966043A (zh) * | 2018-01-17 | 2018-04-27 | 酷仑冷却技术(上海)有限公司 | 一种用于焊接管生产线乳化液冷却的绝热闭式冷却系统 |
CN108266832A (zh) * | 2018-02-06 | 2018-07-10 | 贵州电网有限责任公司 | 一种溶液型防结霜复式室外换热装置 |
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