CN102216702B - Heat pump cycle system and combined supplying method of cold and heat - Google Patents

Heat pump cycle system and combined supplying method of cold and heat Download PDF

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Publication number
CN102216702B
CN102216702B CN2009801412720A CN200980141272A CN102216702B CN 102216702 B CN102216702 B CN 102216702B CN 2009801412720 A CN2009801412720 A CN 2009801412720A CN 200980141272 A CN200980141272 A CN 200980141272A CN 102216702 B CN102216702 B CN 102216702B
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solution
heat
working fluid
heat pump
absorption
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CN2009801412720A
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CN102216702A (en
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苏庆泉
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苏庆泉
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Priority to CN 200810226806 priority patent/CN101737996B/en
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Priority to PCT/CN2009/001276 priority patent/WO2010054537A1/en
Priority to CN2009801412720A priority patent/CN102216702B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system

Abstract

A heat pump cycle system and a combined supplying method of cold and heat are disclosed. The heat pump cycle system comprises a working medium reservoir (40), an absorbing solution reservoir (40) and a compression heat pump. The upper portions of the working medium reservoir (40) and the absorbing solution reservoir (10) are connected by a gas passage (50). The compression heat pump is composed of a compressor (30), a condenser (11), a throttle valve (20) and an evaporator (41) connected by pipes in turn. Working medium is filled in the working medium reservoir (40) in which a first heat exchanger (42) and the evaporator (41) of the compression heat pump are arranged. Absorbing solution is filled in the absorbing solution reservoir (10) in which a second heat exchanger (12) and the condenser (11) of the compression heat pump are arranged. The system employs electricity, especially the electricity during the valley, to drive the compression heat pump cycle so as to accomplish the reproducing process of the absorbing solution.

Description

热泵循环系统以及冷热联供方法 The heat pump cycle system and method for cooling and heating

[0001] 本申请要求申请日为2008年11月17日申请号为200810226806. 7的中国专利申请的优先权。 [0001] This application claims the filing date of November 17, 2008 Application No. priority Chinese patent application 200810226806.7 of.

技术领域 FIELD

[0002] 本发明涉及一种热能工程领域的冷、热供给技术,特别涉及一种吸收式热泵与压缩式热泵相结合的热泵循环系统以及冷热联供方法。 [0002] The present invention relates to the field of thermal engineering hot and cold supply technology, particularly to an absorption heat pump in combination with a compression heat pump cycle system and the heat pump for cooling and heating method.

背景技术 Background technique

[0003] 现有的吸收式热泵系统,利用吸收溶液在一定条件下能析出低沸点组分的蒸气,在另一条件下又能强烈地吸收低沸点组分蒸气这一特性完成制冷或者热泵循环。 [0003] a conventional absorption heat pump system, using an absorption solution under certain conditions can precipitate low-boiling components of the vapor, but absorb strongly in the low-boiling components under other conditions the vapor characteristics of the refrigeration or heat pump cycle is completed . 吸收式循环通常采用二组分吸收溶液,习惯上称低沸点组分为工质,高沸点组分为吸收剂,二者组成工质对,常见的有以水为工质,以溴化锂为吸收剂的水-溴化锂工质对。 Absorption cycle usually two-component absorption solution, said component is customarily a low-boiling working fluid and high-boiling absorbent component, the composition of both the working pair, a common water as working fluid, lithium bromide absorption water agent - lithium bromide working fluid pair. 现有的吸收式热泵系统主要包括:内设换热器的发生器、内设换热器的冷凝器、内设换热器的蒸发器和内设换热器的吸收器,另外还有作为辅助设备的吸收溶液自换热器、吸收溶液泵以及节流器等。 Conventional absorption heat pump system includes: an absorber heat exchanger equipped with generators, heat exchangers equipped with a condenser, an evaporator equipped with the heat exchanger and equipped with a heat exchanger, in addition to a the absorption solution from the auxiliary heat exchanger, the absorbent solution pump and the throttle or the like. 发生器和冷凝器通过蒸气通路相连,蒸发器和吸收器通过蒸气通路相连。 Passage through the vapor generator and a condenser connected to the evaporator and absorber are connected by the vapor passage. 吸收溶液通过吸收溶液管道在发生器和吸收器之间进行循环。 The absorption solution is circulated between the generator and the absorber solution by absorbing the pipe.

[0004] 现有的吸收式热泵系统的工作过程包括:(I)利用驱动热源(如水蒸气、热水及燃气等)在发生器中加热从吸收器输送来的具有一定浓度的溴化锂溶液,并使溴化锂溶液中的水蒸发出来,形成的浓溴化锂溶液循环到吸收器中。 [0004] The working process of the conventional absorption heat pump system comprising: (I) by the driving source (e.g., steam, hot water and gas, etc.) delivered from the absorber to heat the lithium bromide solution having a concentration in the generator, and the aqueous lithium bromide solution is evaporated, concentrated LiBr solution is recycled to form the absorber. (2)水蒸气通过蒸气通路进入冷凝器中,又被换热器中的冷却工质冷凝成冷凝水。 (2) water vapor through the vapor passage into the condenser, and the condensed cooling medium in the heat exchanger to the condensation water. (3)该冷凝水经冷凝水管道进入蒸发器中,吸收换热器中工质的热量而成为低压水蒸气,蒸发器中换热器中的工质的热量被吸收后温度降低,从而成为该吸收式热泵系统对外输出的冷量。 (3) The condensed water condensed water pipe into the evaporator, the absorber heat exchanger to heat the working fluid low pressure steam, the evaporator refrigerant heat exchanger can be absorbed by the temperature decreases, thus becoming cold external output of the absorption heat pump system. (4)上述的低压水蒸气通过蒸气通路进入发生器,被来自发生器中的浓溴化锂溶液吸收并产生吸收热,同时溴化锂溶液的浓度降低,所述的吸收热由吸收器中换热器内冷却工质带走向外供热,低浓度的溴化锂溶液循环至发生器中。 (4) The low pressure steam into the steam generator through the passage, concentrated lithium bromide solution is absorbed from the generator and generating heat of absorption, while the concentration of the lithium bromide solution is reduced, the heat absorbed by the heat exchanger absorber heating the cooling medium taken out, low concentrations of lithium bromide solution recycled to the generator.

发明内容 SUMMARY

[0005] 本发明的主要目的在于提供一种热泵循环系统以及冷热联供方法,所要解决的技术问题是使其结构简单,提高该热泵循环系统的性能系数以及经济性,从而更加适于实用。 [0005] The main object of the present invention is to provide a heat pump cycle system and the method for cooling and heating, the technical problem to be solved by a simple structure so as to improve the coefficient of performance and economy of the heat pump system, which is more suitable for practical .

[0006] 本发明的目的及解决其技术问题是采用以下技术方案来实现的。 [0006] objects and to solve the technical problem of the invention is achieved by the following technical solutions. 依据本发明提出的一种热泵循环系统包括:工质蓄罐、吸收溶液蓄罐以及压缩式热泵,所述的压缩式热泵由压缩机、冷凝器、节流阀以及蒸发器通过管道依次相连所构成,所述工质蓄罐与吸收溶液蓄罐的上部通过气体通路相连接;所述工质蓄罐,其内充有工质,并设置有第一换热器,上述的蒸发器也设置在该工质蓄罐内;所述吸收溶液蓄罐,其内充有吸收溶液,并设置有第二换热器,上述的冷凝器也设置在该吸收溶液蓄罐内。 A heat pump according to the present invention provides a circulation system comprising: a working fluid storage tank, storage tank and the absorption solution heat compression, the compression-type heat pump compressor, a condenser, a throttle valve and an evaporator are sequentially connected by pipes configuration, the working fluid reservoir tank and the upper absorbent solution reservoir tank is connected through a gas passage; said working fluid storage tank, which is filled with the working fluid, a first heat exchanger and is provided with the evaporator is also provided the working fluid reservoir tank; the absorbing solution storage tank, which is filled with the absorption solution, and is provided with a second heat exchanger, the condenser is also provided above the absorbing solution storage tank.

[0007] 本发明的目的及解决其技术问题还可采用以下技术措施进一步实现。 Objects and solve the technical problem [0007] The present invention may also be further achieved by the following technical measures. [0008] 前述的热泵循环系统,其还包括吸收溶液循环泵和吸收溶液喷淋装置、以及工质循环泵和工质喷淋装置,所述的吸收溶液循环泵连接于吸收溶液蓄罐和吸收溶液喷淋装置之间,通过该循环泵在所述吸收溶液蓄罐和吸收溶液喷淋装置之间对吸收溶液进行循环;所述的工质循环泵连接于工质蓄罐和工质喷淋装置之间,通过该循环泵在所述工质蓄罐和工质喷淋装置之间对工质进行循环,所述压缩式热泵的蒸发器设置在所述工质蓄罐内或者工质循环回路上或者第一换热器的循环回路上;所述压缩式热泵的冷凝器设置在所述吸收溶液蓄罐内或者吸收溶液循环回路上或者第二换热器的循环回路上。 [0008] the heat pump cycle system, further comprising an absorbent solution circulating pump and the absorbent solution spraying means and the working fluid and the working fluid circulation pump spray device, the absorption solution circulating pump connected to the reservoir tank and the absorption solution absorption solution between the spraying device, which is circulated through a circulation pump between the reservoir tank and the absorption solution spray absorption solution on the absorption solution means; said working medium circulating pump is connected to a working fluid storage tank and the working fluid spray between the means by which the circulation pump in the working fluid between the accumulator tank and the working medium of the working fluid circulation spraying device, the compression heat pump evaporator disposed in the working fluid cycle the working fluid storage tank or or the first loop heat exchanger circulation loop; the compression heat pump condenser disposed in the absorbing solution storage tank or the absorption solution circulation circuit or the second heat exchanger circulation circuit.

[0009] 优选的,前述的热泵循环系统,其吸收溶液由工质和吸收剂组成,所述的工质为水、氨、甲醇和乙醇其中之一或几种物质的混合物;所述的吸收剂为LiBr、NaBr、KBr、NH4Br、MgBr2, CaBr2, Li I、NaI、KI、NH4I、MgI2' Cal2、LiCl、NaCl、KCl、NH4Cl' MgCl2' CaCl2' LiNO3'NaN03、KNO3> NH4NO3^ Mg (NO3) 2和Ca (NO3) 2其中之一或几种物质的混合物。 Said absorbent; [0009] Preferably, the heat pump cycle system, which is absorbed by the refrigerant and the absorbent solution composition, the working fluid is water, ammonia, methanol and ethanol, wherein a mixture of one or more substances agent is LiBr, NaBr, KBr, NH4Br, MgBr2, CaBr2, Li I, NaI, KI, NH4I, MgI2 'Cal2, LiCl, NaCl, KCl, NH4Cl' MgCl2 'CaCl2' LiNO3'NaN03, KNO3> NH4NO3 ^ Mg (NO3 ) 2 wherein a mixture of one or more substances 2 and Ca (NO3).

[0010] 优选的,前述的热泵循环系统,其中所述的吸收溶液为饱和溶液或者过饱和溶液。 [0010] Preferably, the heat pump cycle system, wherein the absorption solution is a saturated solution or a supersaturated solution. [0011] 优选的,前述的热泵循环系统,其还包括太阳能集热器、地热装置、中水供应装置以及空气换热器中的至少一种,用于向工质蓄罐内的第一换热器提供热量。 [0011] Preferably, the heat pump cycle system, further comprising a solar collector, at least one of the thermal device, the water supply device and the air heat exchanger, the working fluid for changing a first storage tank heat to provide heat.

[0012] 本发明的目的及解决其技术问题是采用以下技术方案来实现的。 [0012] objects and to solve the technical problem of the invention is achieved by the following technical solutions. 依据本发明提出的一种冷热联供方法,其采用上述的热泵循环系统,该方法包括:工作过程,在第一压力下,第一换热器内流动有冷媒,第二换热器内流动有热媒,工质蓄罐内的工质吸收冷媒的热量蒸发为气态工质,该气态工质进入吸收溶液蓄罐并被吸收溶液所吸收,同时释放出吸收热,所述的冷媒供冷,所述的热媒供热;以及再生过程,在第二压力下,所述的压缩式热泵启动,由蒸发器吸收热量,由冷凝器释放热量加热吸收溶液使其蒸发出工质蒸汽,该工质蒸汽进入工质蓄罐并冷凝为液态工质;所述的工作过程和再生过程交替进行。 According to one proposed method for cooling and heating of the present invention, employing the above-described heat pump cycle system, the method comprising: during work, at a first pressure, a first heat exchanger refrigerant flows, a second heat exchanger heat medium flows, the heat storage tank refrigerant working fluid absorbed refrigerant is evaporated gaseous working, the gaseous working solution into the reservoir tank and the absorption the absorption solution is absorbed, while releasing the absorbed heat, the refrigerant supply cold, heating of the heat medium; and a regeneration process, at a second pressure, the compression-type heat pump is started, the heat absorbed by the evaporator, a condenser, releasing heat absorbing solution is heated to evaporate the steam quality labor, the working fluid into the working fluid reservoir tank vapor and condensed to liquid refrigerant; and operation of said regeneration alternately.

[0013] 优选的,前述的冷热联供方法,所述的第二压力小于所述的第一压力。 [0013] Preferably, the above-described method for cooling and heating, the second pressure is less than said first pressure.

[0014] 优选的,前述的冷热联供方法,所述的再生过程采用低谷电作为压缩式热泵的动力。 [0014] Preferably, the method for cooling and heating of the regeneration process employs the electric power as low compression heat pump.

[0015] 优选的,前述的冷热联供方法,其中所述的第一压力大于lKPa,所述的第二压力为 [0015] Preferably, the above-described method for cooling and heating, wherein said first pressure is greater than lKPa, said second pressure is

0.6-lKPa。 0.6-lKPa.

[0016] 优选的,前述的冷热联供方法,其中所述的第一换热器中的冷媒来自于太阳能集热器、地热装置、中水供应装置以及空气换热器的其中之一或者组合。 [0016] Preferably, the above-described method for cooling and heating, wherein said first refrigerant heat exchanger from the solar collectors, one of which geothermal means, water supply means and the air heat exchanger or combination.

[0017] 本发明是关于一种以吸收式热泵循环与压缩式热泵循环相融合为特征的热泵循环系统以及冷热联供方法。 [0017] The present invention relates to an absorption heat pump in the compression heat pump cycle integration is characterized by a heat pump cycle system and method for cooling and heating. 该热泵循环系统包括:工质蓄罐,其内充有工质,并设置有第一换热器和蒸发器;吸收溶液蓄罐,其内充有吸收溶液,并设置有第二换热器和冷凝器,所述工质蓄罐与吸收溶液蓄罐的上部通过气体通路相连接,构成吸收式热泵循环回路,其作用是,通过工质在工质蓄罐的蒸发吸热和在吸收溶液蓄罐的吸收放热,完成经所述第一换热器向外部供给冷量的同时,经所述第二换热器向外部供给热量的工作过程;压缩机以及节流阀,所述压缩机、冷凝器、节流阀以及蒸发器构成压缩式热泵循环回路,其作用是,通过制冷剂在工质蓄罐中的蒸发器蒸发以吸收热量,经压缩升温后在吸收溶液蓄罐中的冷凝器冷凝以放出热量并加热吸收溶液蓄罐中的吸收溶液以产生工质蒸汽,所述工质蒸汽经连接管道流入工质蓄罐冷凝放热,从而完成吸收溶液的再生过程。 The heat pump cycle system comprising: a working fluid storage tank, which is filled with the working fluid, and is provided with a first heat exchanger and an evaporator; absorption solution storage tank, which is filled with the absorption solution, and is provided with a second heat exchanger and a condenser, the working fluid reservoir tank and the upper portion of the absorption solution storage tank are connected by a gas passage, constituting the absorption heat pump circuit, its role is, the working fluid through the working fluid reservoir tank endothermic heat of vaporization and the absorbent solution absorbing heat accumulator tank, finished in the first heat exchanger to the outside while the supply amount of the cold working process heat is supplied via the second heat exchanger to the outside; a throttle valve and a compressor, the compression , a condenser, a throttle valve and an evaporator constituting a compression heat pump cycle, its role is, by evaporation of the refrigerant to absorb heat, by compressed in the absorption solution heated reservoir tank evaporator the working fluid in the accumulator tank condensation in the condenser to discharge heat and the absorption solution is heated solution reservoir tank to produce steam working medium, the working medium vapor flows through the connecting pipe working fluid condensing heat storage tank, thereby completing the regeneration process of the absorption solution. 由于再生过程可在低于工作过程的蒸汽压力下进行,根据工质与吸收溶液的饱和蒸汽压与温度的关系(图3),再生过程的热泵温升小于工作过程的热泵温升,因此压缩式热泵可在较小的热泵温升下实现吸收溶液的浓缩,从而具有较高的能效比(COP)。 Since the regeneration process can be carried out at a pressure below the vapor of the working process, the working fluid in accordance with the relationship between the saturation vapor pressure and temperature of the absorption solution (FIG. 3), the heat pump is less than the temperature rise during the regeneration process of the heat pump working temperature, so compression heat pump can be achieved at a smaller temperature rise of the heat pump of the absorption solution is concentrated to have a high energy efficiency (COP).

[0018] 本发明与现有技术相比具有明显的优点和有益效果。 [0018] The prior art and the present invention has obvious advantages and beneficial effects compared. 由以上技术方案可知,本发明的热泵循环系统比现有的吸收式热泵循环系统具有更加简单的结构,从而可以节约制造成本。 Seen from the above technical solutions, the heat pump circulation system having a circulation system of the present invention is simpler structure than a conventional absorption heat pump, which can save manufacturing costs. 另外,本发明的再生过程具有较高的能效比(COP),还可利用低谷电来完成,因而可实现极高的能源利用效率和经济性。 Further, the regeneration process of the present invention have higher energy efficiency (COP), it may also be accomplished by using low power, and thus can achieve high energy efficiency and economy. 本发明的冷热联供的方法中,再生过程可以在用电低谷时进行,在用电高峰时仅进行工作过程即可实现供热和/或供冷效果,从而可以有效利用低谷电,起到移峰填谷的作用。 The method of the present invention with the hot and cold supply, the regeneration process may be carried out at low power, operate only during peak can be realized when the heating and / or cooling effect, which can effectively utilize low power, since the role of peak load shifting. 因此,发明实质上也提供了一种低谷电力的高效蓄能系统及方法。 Accordingly, the invention also provides a substantially high accumulator system and method for low power.

[0019] 上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,并可依照说明书的内容予以实施,以下以本发明的较佳实施例并配合附图详细说明如后。 [0019] The above description is only an overview of the technical solution of the present invention, in order to more fully understood from the present disclosure, may be implemented in accordance with the contents of the specification, the following preferred embodiments of the present invention to the detailed description and the accompanying drawings as Rear.

附图说明 BRIEF DESCRIPTION

[0020] 图I是本发明实施例I的热泵循环系统的流程图。 [0020] Figure I is a flow chart of the heat pump cycle system of the present invention Example I embodiment.

[0021] 图2是本发明实施例2的热泵循环系统的流程图。 [0021] FIG 2 is a flowchart of the heat pump cycle system of the second embodiment of the present invention.

[0022] 图3是溴化锂饱和溶液和水的饱和蒸汽压与温度的关系图。 [0022] FIG. 3 is a saturated vapor pressure and temperature of saturated lithium bromide solution and water relations of FIG.

[0023] 实现发明的最佳方式 [0023] BEST MODE FOR CARRYING invention.

[0024] 为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例,对依据本发明提出的吸收溶液再生系统以及供热系统的具体实施方式、结构、特征及其功效,详细说明如后。 [0024] To further elaborate the technical means and effects the present invention is predetermined to achieve the object of the invention taken in conjunction with the accompanying drawings and the following preferred embodiments, specific embodiments of the absorbing solution regeneration system and a heating system made in accordance with the present invention , structure, characteristics and efficacy, as will be described in detail.

[0025] 请参阅图I所示,是本发明实施例I的热泵循环系统的流程图。 [0025] Referring to FIG. I is a flowchart of the heat pump cycle system of Example I embodiment of the present invention. 该实施例的热泵循环系统,包括:工质蓄罐40、吸收溶液蓄罐10以及压缩式热泵。 The heat pump cycle system according to the embodiment, comprising: a working fluid reservoir tank 40, an absorbing solution storage tank 10, and a compression heat pump. 其中所述的压缩式热泵可以采用现有技术中的方案。 Wherein said compression heat pump can be employed in prior art solutions. 在本实施例中该压缩式热泵由压缩机30、冷凝器11、节流阀20以及蒸发器41通过管道依次相连所构成,该压缩式热泵循环回路中充有制冷冷媒,较佳的,所采用制冷冷媒为R134a。 In the present embodiment, by the compression heat pump compressor 30, a condenser 11, a throttle valve 20 and an evaporator are connected in sequence via line 41 constituted, the compression heat pump refrigerant circulating circuit filled with a refrigerant, preferably, the using refrigerant as refrigerant R134a. 所述工质蓄罐40,其内充有工质,并设置有第一换热器42,上述的蒸发器41也设置在该工质蓄罐40内。 The working fluid reservoir tank 40, which is filled with the working fluid, and is provided with a first heat exchanger 42, the evaporator 41 described above is also provided in the working fluid reservoir tank 40. 该工质蓄罐40中的第一换热器42内流动冷媒,在工质进行蒸发时,用于向工质提供热量,该冷媒释放热量后温度降低,从而可以向用户供冷。 The working fluid reservoir tank 40 of the first heat exchanger 42 in the refrigerant flow, when the evaporated working fluid, for providing heat to the refrigerant, the refrigerant temperature is reduced after the release of heat, thereby cooling the user. 所述吸收溶液蓄罐10,其内充有吸收溶液,并设置有第二换热器12,上述的冷凝器11也设置在该吸收溶液蓄罐内。 The absorbent solution reservoir tank 10, which is filled with the absorption solution, and is provided with a second heat exchanger 12, the condenser 11 is also provided above the absorbing solution storage tank. 该吸收溶液蓄罐10中的吸收溶液被加热工质蒸发时吸收溶液得到浓缩,当吸收溶液吸收工质蒸汽时,吸收溶液被稀释同时释放吸收热,其中的第二换热器12内流动有热媒,吸收溶液吸收工质时释放的吸收热被热媒所吸收,热媒温度升高后流出吸收溶液蓄罐,从而向用户提供热量。 The absorbent solution is absorbed in the absorbing solution storage tank 10 is heated to obtain a concentrated solution was evaporated working medium, when the absorbent solution absorbs refrigerant vapor, the absorption solution is diluted while releasing heat of absorption, wherein the second heat exchanger 12 flows HTM, the absorbent solution absorbs the released working fluid is absorbed by the heat absorption of the heat medium, after flowing out of the absorption solution heat medium storage tank temperature, so as to provide heat to the user. 所述工质蓄罐40与吸收溶液蓄罐10的上部通过气体通路50相连接,用于工质蒸汽在工质蓄罐40和吸收溶液蓄罐10之间流动。 Flow of the working fluid reservoir tank 40 and the absorption solution tank 50 is connected to an upper portion of the accumulator 10 through the gas passage, a refrigerant vapor working fluid in the reservoir tank 40 and the absorbent solution between the reservoir tank 10. 在工质蓄罐40内充填的工质为水、氨、甲醇和乙醇其中之一或几种物质的混合物。 The working medium in the accumulator tank 40 is filled with the working fluid is water, a mixture of ammonia, methanol and ethanol, wherein one or more substances. 吸收溶液蓄罐10内的吸收溶液由工质和吸收剂组成,所述的工质与工质蓄罐内的工质相同,所述的吸收剂为LiBr、NaBr、KBr、NH4Br、MgBr2、CaBr2、Li I、NaI、KI、NH4I、Mgl2、CaI2、LiCl、NaCl、KCl、NH4Cl、MgCl2、CaCl2、LiNO3、NaNO3、KNO3、NH4NO3、Mg (NO3) 2 和Ca (NO3) 2 其中之一或几种物质的混合物。 Absorption solution storage tank 10 is absorbed by the refrigerant and the absorbent solution composition, the refrigerant working fluid and the working fluid reservoir tank is the same, the absorbent is LiBr, NaBr, KBr, NH4Br, MgBr2, CaBr2 , Li I, NaI, KI, NH4I, Mgl2, CaI2, LiCl, NaCl, KCl, NH4Cl, MgCl2, CaCl2, LiNO3, NaNO3, KNO3, NH4NO3, Mg (NO3) 2 and Ca (NO3) 2 wherein one or several a mixture of substances. 本领域的技术人员可根据工况的需要选择适合的工质和吸收剂。 Those skilled in the art can select a suitable working fluid as desired absorbent and working conditions.

[0026] 由于吸收溶液的浓度越高吸收能力越强,较佳的,吸收溶液蓄罐10内的吸收溶液为饱和溶液或者过饱和溶液,并在工作过程结束时吸收溶液蓄罐10内仍有吸收剂结晶存在。 [0026] Since the stronger the higher the absorption capacity of the absorbent concentration of the solution, preferably, the absorption solution in the solution storage tank 10 is saturated solution or a supersaturated solution, and the absorption solution at the end of the accumulator tank during operation remains within 10 absorbent crystals present.

[0027] 请参阅图2所示,是本发明实施例2的热泵循环系统的流程图。 [0027] Please refer to FIG. 2 is a flowchart of the heat pump cycle system of the second embodiment of the present invention. 本实施例比实施例I增加了吸收溶液循环泵61和喷淋器62、以及工质循环泵71和喷淋器72。 The present embodiment than Example I 62 increases, and the refrigerant circulation pump 71 and the spray absorption solution circulating pump 61 and the sprinkler 72. 所述的吸收溶液循环泵61将吸收溶液蓄罐10中的吸收溶液输送至喷淋器62。 The absorption solution circulating pump 61 absorbing solution storage tank 10 to the spray absorption solution conveyor 62. 所述的工质循环泵71将工质蓄罐40中的液态工质送至喷淋器72。 Said working fluid circulating pump 71 the liquid working fluid in the working fluid tank 40 accumulator 72 to the shower. 本实施例的压缩式热泵冷凝器设置在吸收溶液循环泵61与喷淋器62之间的连接管路上,而压缩式热泵蒸发器设置在工质循环泵71与喷淋器72之间的连接管路上。 Compression heat pump condenser is connected according to the present embodiment is provided in the connecting line between the absorption solution circulating pump 62 and the sprinkler 61, and the compression heat pump evaporator is provided between the working medium circulation pump 71 to the shower 72 pipeline. 作为本实施例的其他方式,所述的压缩式热泵的蒸发器41还可以设置在所述工质蓄罐40内或者设置在第一换热器42的循环回路上;所述压缩式热泵的冷凝器11还可以设置在所述吸收溶液蓄罐10内或者设置在第二换热器12的循环回路上。 As another embodiment according to the present embodiment, the compression-type heat pump evaporator 41 may also be disposed within the working fluid reservoir tank 40 disposed in the circulation loop or the first heat exchanger 42; the compression heat pump condenser 11 may also be disposed in the absorbing solution storage tank 10 is provided in the circulation loop or the second heat exchanger 12. 本实施例还包括用于向工质提供热量的热源,例如太阳能集热器81、地热装置82、中水供应装置83以及空气换热器。 This embodiment also includes a heat source for providing heat to the working fluid, such as a solar heat collector 81, the thermal device 82, the water supply device 83 and the air heat exchanger. 本实施例可以采用上述热源的其中之一也可以采用多个热源联合,从而为工质的蒸发提供多种热源。 One embodiment of the present embodiment described above may employ a plurality of heat source heat sources may be used jointly, thereby providing more heat to the working fluid to evaporate.

[0028] 实施例3是采用实施例2的热泵循环系统的一种冷热联供方法,主要包括工作过程和再生过程。 [0028] Example 3 is to use a cooling and heating system of the heat pump cycle for the method described in Example 2, including the working process and the regeneration process. 在工作过程中向用户提供冷量和热量,在再生过程中浓缩吸收溶液为下一个工作过程提供高浓度的吸收溶液和液态工质。 And heat to provide cooling to the user during operation, and concentrated absorption solution for the next work procedure provides the absorption solution and a high concentration of liquid medium in the regeneration process.

[0029] 所述的工作过程为:系统的工质蓄罐40和吸收溶液蓄罐10保持在第一压力下,第一换热器42内流动有冷媒,第二换热器12内流动有热媒。 [0029] The working process is: the system working fluid reservoir tank 40 and the accumulator tank 10 of the absorption solution is maintained at a first pressure, a first heat exchanger 42 the refrigerant flows, a second heat exchanger 12 flows htm. 在第一压力下,工质蓄罐40内的工质吸收第一换热器内的冷媒的热量蒸发为气态工质,而冷媒被吸收了热量,其温度降低后被输送到用户,从而实现向用户供冷的功效。 At a first pressure, the refrigerant in the first heat exchanger working fluid in the working fluid reservoir tank 40 is evaporated to absorb the gaseous working while the refrigerant is absorbed by the heat, its temperature drops after delivery to the user, in order to achieve users of cooling effect. 该气态工质经气体通路50进入吸收溶液蓄罐10并被高浓度的吸收溶液所吸收,同时释放出吸收热。 The gaseous working through the gas passage 50 into the reservoir tank 10 and the absorption solution absorbed by the high concentration absorption solution, while releasing heat of absorption. 该吸收热被第二换热器内的热媒所吸收,热媒温度升高后被输送到用户,从而实现向用户供热的功效。 The heat is absorbed by the heat absorbent medium within the second heat exchanger, the heating medium temperature was raised after delivery to the user, enabling the user to effect heating. 随着工质蓄罐40内的工质被不断蒸发,吸收溶液蓄罐10内的吸收溶液浓度不断下降,当工质蓄罐40内的工质快要用尽或者吸收溶液的浓度降低到一定值时,工作过程停止。 As the working fluid within the working fluid reservoir tank 40 is continuously evaporated, the concentration of absorption solution storage tank 10 of the absorption solution in the falling, when the working fluid in the working fluid running out of the accumulator tank 40, or the concentration of the absorbent solution is reduced to a certain value when the working process is stopped.

[0030] 所述再生过程为吸收溶液蓄罐内的吸收溶液浓度升高和工质蓄罐40内液态工质增多的过程,是对上述工作过程之后吸收溶液的浓缩与液态工质的再蓄过程。 Concentration of the absorbent solution [0030] The regeneration process of the absorption solution storage tank is increased and the working fluid within the reservoir tank 40 increases the liquid working process, the liquid medium is concentrated and the work process after the above absorption solution and then build process. 该再生过程是蒸发吸收溶液蓄罐中吸收溶液中的工质,并将该工质转移到工质蓄罐中的过程。 The evaporation of the absorbing solution regeneration process is absorbed working fluid reservoir tank solution, and the process to transfer the working fluid to the working fluid reservoir tank. 具体为,启动压缩机,进行压缩式热泵循环,该压缩式热泵循环采用现有技术,在此不再赘述。 Specifically, starting the compressor, compression heat pump cycle, the compression heat pump cycle using the prior art, it is not repeated here. 再生过程中,工质蓄罐40和吸收溶液蓄罐10处于第二压力。 Regeneration process, the working fluid reservoir tank 40 and the absorbent solution tank 10 at a second pressure accumulator. 所述的压缩式热泵循环的蒸发器41吸收工质的热量,使工质蓄罐40内温度降低;同时,压缩式热泵循环的冷凝器11向吸收溶液释放热量使吸收溶液温度升高,从而使其中的工质蒸发为气态。 The compression heat pump cycle refrigerant evaporator 41 absorbing heat, so the temperature of the working fluid within the reservoir tank 40 decreased; Meanwhile, a compression cycle heat pump condenser 11 releases the absorbed heat to the absorbing solution, solution temperature, whereby All of them have evaporated so that gaseous. 气态工质经气体通路50进入工质蓄罐40,由于温度低,气态工质变为液态。 Gaseous working gas passage 50 through the working fluid into the reservoir tank 40, due to the low temperatures, the gaseous working liquid qualitative change. 较佳的,采用用电低谷时的低谷电作为压缩式热泵的动力。 Preferably, when using a low power low electric power as the compression heat pump. 在第二压力下,吸收溶液蓄罐内的吸收溶液浓度不断升高,当其达到一定浓度,冷凝器提供的温度不足以蒸发吸收溶液的工质时,工质不再转移,此时,再生过程停止。 At a second pressure, the concentration of absorption solution in the absorption solution storage tank rising, when it reaches a certain concentration, temperature of the condenser is not sufficient to absorb the solution upon evaporation of the working fluid, the working fluid is no longer transfer time, reproduction process stops. 所述的工作过程和再生过程交替进行,优选的,在用电高峰时进行工作过程,在用电低谷时进行再生过程,这样既可以满足向用户提供冷、热两种能量,又可以有效地利用低谷电。 The working process and the regeneration process alternately, preferably carried out at peak working process, the regeneration process is at low power, so that both meet the user to provide cold, heat two kinds of energy, and can be effectively advantage of low power.

[0031] 在本实施例中,采用溴化锂作为吸收剂,水作为工质。 [0031] In the present embodiment, the use of lithium bromide as an absorbent, water as the working fluid. 所述的第二压力小于所述的第一压力,优选第一压力大于IKPa,第二压力为0. 6-lKPa。 Said second pressure is less than said first pressure, a first pressure is preferably greater than IKPa, the second pressure is 0. 6-lKPa. [0032] 请参阅图3所示,图中上部的曲线为溴化锂饱和溶液的饱和蒸汽压与温度的关系曲线,图中下部的曲线为水的饱和蒸汽压与温度的关系曲线。 [0032] Please refer to FIG. 3, upper curve in FIG relationship with the temperature of the saturated vapor pressure curve of a saturated solution of lithium bromide, in a lower graph is a plot of the saturation vapor pressure and temperature of the water. 从图中可以看出,在0.6KPa附近的第二压力下进行再生过程时,只要向吸收溶液提供高于51°C的热量,同时向工质提供接近0°C的冷量就可以使吸收溶液蓄罐中的吸收溶液在饱和溶液状态下不断地蒸发出工质,气态工质在工质蓄罐中不断地冷凝,而上述热源和冷源可由缩式热泵循环同时提供。 As can be seen from the figure, when the regeneration process is at a second pressure in the vicinity of 0.6kPa, as long as heat to 51 ° C above the absorption solution, while providing access to at 0 ° C to the cold working fluid absorption can absorption solution in the solution storage tank in a constant state of saturated solution evaporated labor quality, the gaseous working constantly working fluid is condensed in the reservoir tank, and said hot and cold sources may be reduced while providing a heat pump cycle.

[0033] 再生过程结束后,在4. 5KPa附近的第一压力下进行工作过程时,工质蓄罐中的工质在32°C附近蒸发并释放冷量,吸收溶液蓄罐中的饱和吸收溶液在100°C附近吸收工质并释放热量,此时两个蓄罐之间的温差为68°C。 When [0033] After the regeneration process, the process operates at a first pressure 4. 5KPa near the working fluid in the working fluid evaporates and the accumulator can release cold near 32 ° C, the absorption saturated absorption solution storage tank solution in the vicinity of 100 ° C and releases heat absorbing working fluid, when the temperature difference between the two storage tanks of 68 ° C. 也就是说,本实施例可在51°C的温升下进行再生过程,而在68°C的温升下进行工作过程。 That is, the present embodiment may be carried out at a regeneration temperature of 51 ° C, the working process is carried out at a temperature of 68 ° C. 由于温升越小,压缩式热泵的能耗越低,所以采用本发明的方法,在所需工作温升一定的条件下,可以使压缩式热泵在较小的温升下工作,从而提高系统的能量利用效率。 The smaller temperature rise, the lower the energy consumption of the compression heat pump, the method of the present invention, under certain conditions of the desired working temperature, it is possible that the compression type heat pump is small in temperature rise, improving system energy utilization efficiency. 具体的工作过程和再生过程的压力,本领域的技术人员可以参考上述实施例和图3中两条曲线的关系,并根据具体的冷热需求做出适当的选择。 Specific pressure working process and regeneration process, those skilled in the art can refer to the above-described embodiment the relationship between the two curves in Figure 3 and the embodiment, and make appropriate choices according to the specific needs of hot and cold.

[0034] 以上所述,仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,虽然本发明已以较佳实施例揭露如上,然而并非用以限定本发明,任何熟悉本专业的技术人员,在不脱离本发明技术方案范围内,当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例,但凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。 [0034] The above are only preferred embodiments of the present invention only, not limitation of the present invention in any form, although the invention has been disclosed above by the preferred embodiments, but not intended to limit the present invention, anyone familiar with Those skilled in the art, without departing from the scope of the technical solution of the present invention, when some minor modifications may be made using the techniques disclosed content equivalent embodiments or equivalent modifications to change, but all without departing from the technical solutions of the present invention , any simple modification based on the technical essence of the present invention is made to the above embodiment of the embodiment, the equivalent changes and modifications as would fall within the scope of the technical solutions of the present invention.

[0035] 工业应用件 [0035] pieces of industrial applications

[0036] 本发明的热泵循环系统比现有的吸收式热泵循环系统具有更加简单的结构,从而可以节约制造成本。 [0036] The circulation system of the heat pump circulation system of the present invention having a simpler structure than a conventional absorption heat pump, which can save manufacturing costs. 另外,本发明的再生过程具有较高的能效比(COP),还可利用低谷电来完成,因而可实现极高的能源利用效率和经济性。 Further, the regeneration process of the present invention have higher energy efficiency (COP), it may also be accomplished by using low power, and thus can achieve high energy efficiency and economy. 本发明的冷热联供的方法中,再生过程可以在用电低谷时进行,在用电高峰时仅进行工作过程即可实现供热和/或供冷效果,从而可以有效利用低谷电,起到移峰填谷的作用。 The method of the present invention with the hot and cold supply, the regeneration process may be carried out at low power, operate only during peak can be realized when the heating and / or cooling effect, which can effectively utilize low power, since the role of peak load shifting. 因此,发明实质上也提供了一种低谷电力的高效蓄能系统及方法。 Accordingly, the invention also provides a substantially high accumulator system and method for low power.

Claims (8)

1. 一种热泵循环系统,其特征在于其包括:工质蓄罐、吸收溶液蓄罐以及压缩式热泵,所述工质蓄罐与吸收溶液蓄罐的上部通过气体通路相连接, 所述的压缩式热泵由压缩机、冷凝器、节流阀以及蒸发器通过管道相连所构成; 所述工质蓄罐,其内充有工质,并设置有第一换热器; 所述吸收溶液蓄罐,其内充有吸收溶液,并设置有第二换热器; 还包括吸收溶液循环泵和吸收溶液喷淋装置、以及工质循环泵和工质喷淋装置,所述的吸收溶液循环泵连接于吸收溶液蓄罐和吸收溶液喷淋装置之间,通过该循环泵在所述吸收溶液蓄罐和吸收溶液喷淋装置之间对吸收溶液进行循环;所述的工质循环泵连接于工质蓄罐和工质喷淋装置之间,通过该循环泵在所述工质蓄罐和工质喷淋装置之间对工质进行循环, 所述压缩式热泵的蒸发器设置在所述工质蓄罐内或者 1. A heat pump circulation system, characterized in that it comprises: working fluid reservoir tank, an absorbing solution storage tank and a compression heat pump, the working fluid reservoir tank and the upper portion of the absorbent solution reservoir tank is connected through a gas passage, said compression heat pump constituted by a pipe connected to a compressor, a condenser, and an evaporator through a throttle valve; said working fluid storage tank, which is filled with the working fluid, and is provided with a first heat exchanger; said absorbent solution reservoir tank filled with the absorption solution therein, and is provided with a second heat exchanger; absorbent solution further comprises a circulating pump and the absorbent solution spraying means and the working fluid and the working fluid circulation pump spray device, the absorption solution circulating pump connected to the storage tank and the absorption solution between absorber solution spray means in the absorption solution storage tank through the circulation pump and the absorbent solution is circulated between the absorption solution spray means; said working medium circulating pump is connected to the station between the storage tank and the quality of the working fluid spraying means, by which the circulation pump in the working fluid between the accumulator tank and the working medium of the working fluid circulation spraying device, the compression heat pump evaporator disposed in said station quality or storage tank 质循环回路上或者第一换热器的循环回路上;所述压缩式热泵的冷凝器设置在所述吸收溶液蓄罐内或者吸收溶液循环回路上或者第二换热器的循环回路上。 Mass circulation circuit or circulation circuit of the first heat exchanger; the compression heat pump condenser disposed in the absorbing solution storage tank or the absorption solution circulation circuit or the second heat exchanger circulation circuit.
2.根据权利要求I所述的热泵循环系统,其特征在于所述的吸收溶液由工质和吸收剂组成,所述的工质为水、氨、甲醇和乙醇其中之一或几种物质的混合物;所述的吸收剂为LiBr、NaBr、KBr、NH4Br、MgBr2、CaBr2、Li I、NaI、KI、NH4I、MgI2、CaI2、LiCl、NaCl、KCl、NH4Cl、MgCl2, CaCl2, LiN03、NaNO3> KNO3> NH4N03、Mg (NO3)2 和Ca (NO3)2 其中之一或几种物质的混合物。 The heat pump cycle system according to claim I, wherein said absorbent solution from the refrigerant and the absorbent composition, the working fluid is ammonia, methanol, water and ethanol wherein one or more substances mixture; the absorbent is LiBr, NaBr, KBr, NH4Br, MgBr2, CaBr2, Li I, NaI, KI, NH4I, MgI2, CaI2, LiCl, NaCl, KCl, NH4Cl, MgCl2, CaCl2, LiN03, NaNO3> KNO3 > NH4N03, Mg (NO3) 2 wherein a mixture of one or more substances 2 and Ca (NO3).
3.根据权利要求I所述的热泵循环系统,其特征在于其中所述的吸收溶液为饱和溶液或者过饱和溶液。 3. The heat pump cycle system according to claim I, characterized in that the absorption solution wherein the solution is saturated or supersaturated solution.
4.根据权利要求1-3任一项所述的热泵循环系统,其特征在于,还包括太阳能集热器、地热装置、中水供应装置以及空气换热器中的至少一种,用于向工质蓄罐内的第一换热器提供热量。 4. The heat pump cycle system according to claim any one of claims 1-3, characterized by further comprising a solar collector, at least one of the thermal device, the water supply device and the air heat exchanger for the refrigerant storage tank to provide a first heat exchanger.
5. 一种冷热联供方法,其特征在于其采用权利要求1-4任一项所述的热泵循环系统,该方法包括: 工作过程,在第一压力下,第一换热器内流动有冷媒,第二换热器内流动有热媒,工质蓄罐内的工质吸收冷媒的热量蒸发为气态工质,该气态工质进入吸收溶液蓄罐并被吸收溶液所吸收,同时释放出吸收热,所述的冷媒供冷,所述的热媒供热;以及再生过程,在第二压力下,所述的压缩式热泵启动,由蒸发器吸收热量,由冷凝器释放热量加热吸收溶液使其蒸发出工质蒸汽,该工质蒸汽进入工质蓄罐并冷凝为液态工质, 所述的工作过程和再生过程交替进行。 A method for cooling and heating, characterized in that it uses the heat pump circulation system as claimed in claim any one of claims 1-4, the method comprising: during work, at a first pressure, the flow of the first heat exchanger there refrigerant, a second heat exchanger medium flows, the heat storage tank refrigerant working fluid absorbed refrigerant is evaporated gaseous working, the gaseous working solution into the reservoir tank and the absorption the absorption solution is absorbed, while releasing an absorption heat, cooling the refrigerant, the heat medium heat; and a regeneration process, at a second pressure, the compression-type heat pump is started, the heat absorbed by the evaporator, absorbing heat from the condenser to release heat solution was evaporated and labor quality steam, the working fluid into the working fluid reservoir tank vapor and condensed to liquid refrigerant, and the operation of said regeneration alternately.
6.根据权利要求5所述的冷热联供方法,其特征在于所述的第二压力小于所述的第一压力。 6. A method for cooling and heating according to claim 5, wherein said first pressure is less than said second pressure.
7.根据权利要求5所述的冷热联供方法,其特征在于再生过程采用低谷电作为压缩式热泵的动力。 The method for cooling and heating according to claim 5, characterized in that the regeneration process uses low power as a power compression heat pump.
8.根据权利要求5所述的冷热联供方法,其特征在于其中所述的第一压力大于lKPa,所述的第二压力为0. 6-lKPa。 A method for cooling and heating according to claim 5, characterized in that wherein said first pressure is greater than lKPa, said second pressure is 0. 6-lKPa.
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