CN103528258B - Mixed working medium variable concentration volume adjusting absorption heat pump system - Google Patents
Mixed working medium variable concentration volume adjusting absorption heat pump system Download PDFInfo
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- CN103528258B CN103528258B CN201310528485.7A CN201310528485A CN103528258B CN 103528258 B CN103528258 B CN 103528258B CN 201310528485 A CN201310528485 A CN 201310528485A CN 103528258 B CN103528258 B CN 103528258B
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to a mixed working medium variable concentration volume adjusting absorption heat pump system which comprises an energy storage device, a solution storage tank, a condenser, a throttling gear, a cooling device, an evaporimeter, a high-pressure storage tank, a low-pressure storage tank and a rectifying column. The system uses the energy storage device and the solution storage tank to store and release solar energy and solution potential energy and combines a variable concentration volume adjusting method, so that an air conditioning system can meet working requirements of all weather. By means of the system, the shortcomings in the existing solar energy absorption type refrigeration technology that solar energy using is intermittent and unstable and the like are overcome, all-weather operation of solar energy absorption type refrigeration is achieved, refrigeration coefficient is improved, and the system has the advantages of being efficient, saving energy, being stable and reliable in performance and the like.
Description
Technical field
The present invention relates to a kind of absorption type heat pump system of Driven by Solar Energy, specifically refer to the mixed working-medium to change concentration capacity regulating absorption type heat pump system with energy storage function.
Background technology
Absorption refrigeration can adopt the low grade heat energies such as solar energy to drive, and the friendly working medium of environment for use is as cold-producing medium, has the advantage of energy-saving and environmental protection.But when taking solar energy as driving heat source, because of intermittence and the instability of solar energy, make Absorption Refrigerator can not round-the-clock running.Usually, the traditional refrigerating capacity of absorption refrigeration regulates mainly through changing heat source temperature or heat source fluid flow realizes, but during with astable thermals source such as solar energy for drive energy, above-mentioned control method often can not play the regulating action of expection, makes the cold regulation of absorption refrigeration be restricted.In order to solve the problem, Variable Composition capacity regulation method and energy storage thought are applied to absorption refrigeration, realize the capacity regulating of low-grade astable thermal source absorption refrigeration, reduce energy ezpenditure, the saving high-grade electric energy of Driven by Solar Energy Absorption Cooling System with this, make absorption refrigeration obtain wider refrigerating capacity adjustable range and improve the coefficient of performance of Absorption Cooling System variable working condition.
Summary of the invention
Technical problem to be solved by this invention provides a kind of mixed working-medium to change concentration capacity regulating absorption type heat pump system with energy storage function for the present situation of prior art.
The present invention solves the problems of the technologies described above adopted technical scheme: this mixed working-medium to change concentration capacity regulating absorption type heat pump system, comprising: absorber, generator, condenser and evaporimeter, is characterized in that:
Gas phase media from 1 of described generator exports the gas phase sent and is divided into two-way, and wherein the first via directly connects the entrance of described condenser, and the second tunnel connects the first entrance of rectifying column by the 4th magnetic valve; The liquid outlet of described generator connects the first entrance of solution heat exchanger, and the low-temperature inlet of described generator connects the second outlet of described solution heat exchanger; Described generator connects energy storage device by the second heat exchanging pipe, and described second heat exchanging pipe is provided with the 7th magnetic valve; The second heat transferring medium is provided with, by the circulation of the second heat transferring medium thus the conveying capacity that circulates between energy storage device and generator in second heat exchanging pipe;
Described energy storage device connects heat collector by the first heat exchanging pipe; The first heat transferring medium is provided with in described first heat exchanging pipe; Described first heat exchanging pipe on section, be connected to the first heat exchange bypass and the second heat exchange bypass, the port of export of described first heat exchange bypass connects the route section of described second heat exchanger tube, and what the entrance point of described second heat exchange bypass connected described second heat exchanging pipe goes out section; Described first heat exchange bypass or the second heat exchange bypass are provided with the 6th magnetic valve,
Energy storage material is filled with in described energy storage device;
Solution heat exchanger, carries out heat exchange to from the high temperature refrigerant of generator and the cryogenic fluid of absorber; First outlet of solution heat exchanger connects the second entrance of described absorber by the second solution reservoir, the second entrance of solution heat exchanger connects the outlet of described absorber by solution pump,
The outlet of described condenser connects the entrance of the first solution reservoir, and the outlet of the first solution reservoir connects the entrance of described evaporimeter by throttling arrangement; Cold-producing medium is stored in described first solution reservoir;
Rectifying column, for separating of the working medium of different boiling, rectifying column is provided with the first entrance, the second entrance, gaseous phase outlet and liquid-phase outlet; Wherein, the first entrance of described rectifying column connects the gaseous phase outlet of described generator by the 4th magnetic valve, and the second entrance of described rectifying column connects the first outlet of described high pressure storage tank by the 3rd magnetic valve; The gaseous phase outlet of rectifying column connects the entrance of aerial cooler through the first magnetic valve, the liquid-phase outlet of rectifying column connects the entrance of low pressure storage tank;
High pressure storage tank, for storing low boiling working fluid, first outlet of described high pressure storage tank connects the liquid inlet of rectifying column by the 3rd magnetic valve, the entrance of high pressure storage tank connects the outlet of aerial cooler, and the second outlet of described high pressure storage tank connects the entrance of described condenser by the second magnetic valve;
Low pressure storage tank, for storing higher boiling working medium, the entrance of described low pressure storage tank connects the liquid-phase outlet of described rectifying column, and the outlet of low pressure storage tank connects the entrance of described condenser by the 5th magnetic valve;
Described energy storage material can be water or phase-change material paraffin, also can select other energy storage material as required.
Compared with prior art, the present invention proposes a kind of round-the-clock mixed working-medium to change concentration capacity regulating absorption type heat pump system newly, in system, energy storage device is installed, energy storage material is the phase-change material such as water or paraffin etc., when solar energy is sufficient, energy storage device and solution reservoir store solar energy and solution potential respectively, in solar energy deficiency or when not having, discharge above energy; When variation of ambient temperature, open separator, Variable Composition capacity regulating is used to save heat pump energy consumption, the shortcoming such as Solar use interval and instability in prior art can be overcome more than comprehensive, realize the round-the-clock running of solar energy absorption type refrigeration, improve coefficient of refrigerating performance, there is the advantages such as energy-efficient, stable and reliable for performance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figure 1, this mixed working-medium to change concentration capacity regulating absorption type heat pump system comprises: heat collector 19, energy storage device 17, absorber 2, generator 1, condenser 4, evaporimeter 3 and solution reservoir etc.Wherein,
Heat collector 19 is solar energy absorption plant, connects energy storage device 17 by the first heat exchanging pipe 20, and for absorbing the luminous energy such as solar energy, the energy of absorption is for heating the first heat transferring medium in the first heat exchanging pipe 20, and the first heat transferring medium in the present embodiment is water; Heat collector 19 is vacuum tube or flat plate collector.
Energy storage device 17, for storing the heat collected by heat collector 19, is filled with energy storage material in it, adopts phase-change material paraffin as energy storage material in the present embodiment; It connects generator 1 by the second heat exchanging pipe 21.Second heat exchanging pipe 21 has a closed circulation line of one's own, and the second heat exchanging pipe 21 is provided with the 7th magnetic valve 25; Be filled with the second heat transferring medium in second heat exchanging pipe, the second heat transferring medium in the present embodiment is water; Energy stored in energy storage device first heats the second heat transferring medium, by the circulation of the second heat transferring medium in the second heat exchanging pipe by Energy transfer to generator 1, for the absorption refrigeration working medium pair in heating generator 1, cold-producing medium is wherein made to become the gaseous phase outlet effusion of steam through generator top.
Energy storage device 17 connects heat collector 19 by the first heat exchanging pipe 20; The port of export being connected to the first heat exchange bypass 26 and the second heat exchange bypass 28, first heat exchange bypass on section of the first heat exchanging pipe 20 connects the route section of the second heat exchanger tube, and what the entrance point of the second heat exchange bypass connected the second heat exchanging pipe goes out section; First heat exchange bypass or the second heat exchange bypass are provided with the 6th magnetic valve 24,
The gas phase that gaseous phase outlet from 1 of generator is sent is divided into two-way, and the first via directly connects the entrance of condenser 4, and the second tunnel connects the first entrance of rectifying column 7 by the 4th magnetic valve 15; The flow-rate ratio on the first via and the second tunnel is 2-8:8-2; The liquid outlet of generator 1 connects the first entrance of solution heat exchanger 5, and the low-temperature inlet of described generator 1 connects the second outlet of described solution heat exchanger 5; Connect energy storage device 17 by the second heat transferring medium through the second heat exchanging pipe 21 in described generator, described energy storage device 17 connects heat collector 19 by the first heat transferring medium through the first heat exchanging pipe 20.
In the present embodiment, the solution in generator is the mixture of the different absorbent of two or more boiling point and cold-producing medium, is conventional thing.
Solution heat exchanger 5, carries out heat exchange to the high temperature refrigerant from generator 1 and the cryogenic fluid from absorber 2; First outlet of solution heat exchanger 5 connects the second entrance of absorber 2 by the second solution reservoir 23, the second entrance of solution heat exchanger 5 connects the outlet of absorber 2 by solution pump 6.
Second solution reservoir is for storing concentrated solution (being namely rich in the solution of absorbent), when potential utilizes, with the first solution reservoir with the use of, namely, first solution reservoir refrigerant release, enters absorber after evaporator evaporation refrigeration, and at this moment the second solution reservoir release concentrated solution is to absorber, absorb the cold-producing medium from the first solution reservoir, process of refrigerastion is carried out smoothly.
The outlet of condenser 4 connects the entrance of the first solution reservoir 18, and the outlet of the first solution reservoir 18 connects the entrance of evaporimeter 3 by throttling arrangement 9; Storing cold-producing medium in first solution reservoir 18, is potential energy storage.
Rectifying column 7, for separating of the working medium of different boiling, rectifying column is provided with the first entrance, the second entrance, gaseous phase outlet and liquid-phase outlet; Wherein, the first entrance of described rectifying column connects the gaseous phase outlet of described generator 1 by the 4th magnetic valve 15, and the second entrance of described rectifying column connects the first outlet of described high pressure storage tank by the 3rd magnetic valve; The gaseous phase outlet of rectifying column connects the entrance of cooler 10, and the liquid-phase outlet of rectifying column connects the entrance of low pressure storage tank 8;
High pressure storage tank 11, for storing low boiling working fluid, first outlet of high pressure storage tank 11 connects the second entrance of rectifying column by the 3rd magnetic valve 14, the entrance of high pressure storage tank connects the outlet of cooler 10, and the second outlet of high pressure storage tank connects the entrance of condenser by the second magnetic valve 13;
Low pressure storage tank 8, for storing higher boiling working medium, the entrance of low pressure storage tank connects the liquid-phase outlet of described rectifying column, and the outlet of low pressure storage tank 8 connects the entrance of condenser 4 by the 5th magnetic valve 16.
Above-mentioned rectifying column 7, low pressure storage tank 8 and high pressure storage tank 11 form the separator of the present embodiment.
Below for refrigeration, the sunny and operation principle of the inadequate two kinds of situations of sunlight to the round-the-clock absorption heat pump in the present embodiment is divided into be described in detail.
When sun-drenched daytime, heat collector 19 collects solar energy, heats the first heat transferring medium, and the first heat transferring medium enters energy storage device 17 through the first heat exchanging pipe 20, makes the energy storage material work in energy storage device, stores this part energy.Open the 6th magnetic valve 24 simultaneously, close the 7th magnetic valve 25, make a solar energy part of collecting in solar thermal collector enter energy storage device 17 to store, another part directly enters absorption refrigeration working medium pair in the direct heating generator of generator 1 by the first heat exchange bypass 26, drives generator work.Under this situation, separator is in closed condition.
Specific implementation method is described below: close the first magnetic valve 12, second magnetic valve 13, the 3rd magnetic valve 14, the 4th magnetic valve 15, the 5th magnetic valve 16.Enter condenser 4 from generator 1 high-temperature high-pressure refrigerant gas out and be condensed into high-temp liquid, after flowing through the first solution reservoir 18 store refrigerant potential, enter absorber 2 absorbed by absorbent through throttling arrangement 9, evaporimeter 3, after absorber 2 absorption refrigeration agent, enter generator 1 through solution pump 6, solution heat exchanger 5; Absorption refrigeration working medium in generator after heat source, refrigerant release gas starts new kind of refrigeration cycle, and absorbent liquid enters absorber 2 through the second solution reservoir after the liquid outlet of generator 1 enters solution heat exchanger 5 and the absorption refrigeration solution heat exchange next by absorber.
When the morning and evening is waited solar energy deficiency or do not have solar energy, the heat energy that now solar thermal collector absorbs preferentially directly is entered in generator by the first heat exchange bypass, absorption refrigeration working medium pair in heating generator.Now close the 7th magnetic valve 25, open the 6th magnetic valve 24.As solar energy is not enough to drive refrigeration system, then drive absorption refrigeration cycle with the energy in energy storage device 17 stored by energy storage material, namely close the 6th magnetic valve 24, open the 7th magnetic valve 25, utilize absorption refrigeration working medium pair in the energy warms generator in the second heat exchanging pipe 21.Or utilize the cold-producing medium stored in the first solution reservoir to make it flow through choke valve 9, evaporimeter 3, discharge the concentrated solution in the second solution reservoir simultaneously, make its cold-producing medium constantly absorbing flash-pot realize process of refrigerastion.Now in order to save energy storage, starting separator, opening Variable Composition system, to improve the environmental suitability of absorption system.
Specific implementation method is as follows:
When power system capacity and customer charge approximately equal, system constant volume carries out.Now close the first magnetic valve 12, second magnetic valve 13, the 3rd magnetic valve 14, the 4th magnetic valve 15, the 5th magnetic valve 16.Enter condenser 4 from generator 1 high-temperature high-pressure refrigerant gas medium out and be condensed into high-temp liquid, flow through the first solution reservoir 18 storage solutions potential, through throttling arrangement 9, cooler 10, evaporimeter 3, finally enter absorber 2 top and absorbed by absorbent, after absorber 2 absorption refrigeration medium, enter generator 1 in bottom through solution pump 6, solution heat exchanger 5; Absorption refrigeration working medium in generator after heat source, refrigerant release gas starts new kind of refrigeration cycle, and absorbent liquid enters absorber 2 through the liquid outlet of generator 1 through solution heat exchanger 5.
If when power system capacity is larger than customer charge, system needs to subtract appearance.Now open the 4th magnetic valve 15, the 5th magnetic valve 16, second magnetic valve 13 cuts out.Divide two-way from the media outlet high temperature and high pressure gas out of generator 1: the first via enters through the 4th magnetic valve 15 gas that rectifying column 7 produces heat, this gas rises and enters high pressure storage tank 11 through the gaseous phase outlet of rectifying column 7, the first magnetic valve 1, aerial cooler 10, second tunnel is through condenser 4, first solution reservoir 18, throttling arrangement 9, the gas that rectifying column 7 is sent here is cooled to liquid by aerial cooler 10, this part liquid is through the liquid outlet of high pressure storage tank 11, 3rd magnetic valve 14, rectifying column 7 is entered dirty from the liquid inlet of rectifying column 7, to meet generation rectifying with the gas risen, the isolated mixture being rich in higher boiling working medium enters low pressure tank 8, flow with first via high temperature and high pressure gas through the 5th magnetic valve 16, enter condenser 4, through the first solution reservoir 18, throttling arrangement 7, evaporimeter 3, enter absorber 2 from the medium inlet of absorber 2 to be absorbed by absorbent, the liquid of absorber bottom is through solution pump 6, solution heat exchanger 5 enters in generator.Complete and subtract appearance process.Now, the 4th magnetic valve 15, the 5th magnetic valve 16 are all closed, and system carries out constant volume operation under new capacity.If when power system capacity is less than customer charge, system needs increase-volume.Now, the 4th magnetic valve 15, second magnetic valve 13 is opened, and the 5th magnetic valve 16 cuts out.Be divided into two-way from the media outlet high temperature and high pressure gas out of generator 1: the first via enters rectifying column 7 through the 4th magnetic valve 15 and produces gas, this gas rises and enters in high pressure storage tank 11, second tunnel enters throttling arrangement 7 through condenser 4, the gas that rectifying column 7 is sent here is cooled to liquid by cooler 10 in high pressure storage tank 11, it is dirty that this part liquid enters rectifying column 7, meet with the first via gas risen and carry out rectifying, isolatedly be rich in high boiling working medium mixture and enter low pressure storage tank 8 and store, the isolated mixture being rich in low boiling working fluid flows out from the gas vent of high pressure storage tank 11, flow to into condenser 4 through the second magnetic valve 13 and the second tunnel, through throttling arrangement 7, evaporimeter enters absorber 2 and is absorbed by absorbent, absorber 2 to absorb after working medium in bottom through solution pump 6, solution heat exchanger 5 enters generator 1.When increase-volume is complete, the 4th magnetic valve 15, the 5th magnetic valve 16 are all closed, and system carries out constant volume operation under new capacity.
When daytime of sunlight deficiency, the morning and evening and night time, with sun-drenched morning and evening operating scheme said above.Here no longer describe.
Claims (2)
1. a mixed working-medium to change concentration capacity regulating absorption type heat pump system, comprising: absorber, generator, condenser and evaporimeter, is characterized in that:
Export from the gas phase media of (1) of described generator the gas phase sent and be divided into two-way, wherein the first via directly connects the entrance of described condenser (4), and the second tunnel connects the first entrance of rectifying column (7) by the 4th magnetic valve (15); The liquid outlet of described generator (1) connects the first entrance of solution heat exchanger (5), and the low-temperature inlet of described generator (1) connects the second outlet of described solution heat exchanger (5); Described generator connects energy storage device (17) by the second heat exchanging pipe (21), and described second heat exchanging pipe (21) is provided with the 7th magnetic valve (25); Second heat exchanging pipe is provided with the second heat transferring medium in (21), by the circulation of the second heat transferring medium thus the conveying capacity that circulates between energy storage device (17) and generator (1);
Described energy storage device (17) connects heat collector (19) by the first heat exchanging pipe (20); The first heat transferring medium is provided with in described first heat exchanging pipe (20); Described first heat exchanging pipe (20) on section, be connected to the first heat exchange bypass (26) and the second heat exchange bypass (28), the port of export of described first heat exchange bypass connects the route section of described second heat exchanging pipe, and what the entrance point of described second heat exchange bypass connected described second heat exchanging pipe goes out section; Described first heat exchange bypass or the second heat exchange bypass are provided with the 6th magnetic valve (24),
Energy storage material is filled with in described energy storage device;
Solution heat exchanger (5), carries out heat exchange to from the high temperature refrigerant of generator (1) and the cryogenic fluid of absorber; First outlet of solution heat exchanger (5) connects the second entrance of described absorber (2) by the second solution reservoir, second entrance of solution heat exchanger (5) connects the outlet of described absorber (2) by solution pump (6)
The outlet of described condenser (4) connects the entrance of the first solution reservoir (18), and the outlet of the first solution reservoir (18) connects the entrance of described evaporimeter (3) by throttling arrangement (9); Cold-producing medium is stored in described first solution reservoir (18);
Rectifying column (7), for separating of the working medium of different boiling, rectifying column is provided with the first entrance, the second entrance, gaseous phase outlet and liquid-phase outlet; Wherein, the first entrance of described rectifying column connects the gaseous phase outlet of described generator (1) by the 4th magnetic valve (15), and the second entrance of described rectifying column connects the first outlet of high pressure storage tank by the 3rd magnetic valve; The gaseous phase outlet of rectifying column connects the entrance of aerial cooler (10) through the first magnetic valve (12), the liquid-phase outlet of rectifying column connects the entrance of low pressure storage tank (8);
High pressure storage tank (11), for storing low boiling working fluid, first outlet of described high pressure storage tank (11) connects the second entrance of rectifying column by the 3rd magnetic valve (14), the entrance of high pressure storage tank connects the outlet of aerial cooler (10), and the second outlet of described high pressure storage tank connects the entrance of described condenser by the second magnetic valve;
Low pressure storage tank (8), for storing higher boiling working medium, the entrance of described low pressure storage tank connects the liquid-phase outlet of described rectifying column, and the outlet of low pressure storage tank (8) connects the entrance of described condenser (4) by the 5th magnetic valve (16).
2., according to claim 1 mixed working-medium to change concentration capacity regulating absorption type heat pump system, it is characterized in that described energy storage material is water or phase-change material paraffin.
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| CN201310528485.7A CN103528258B (en) | 2013-10-30 | 2013-10-30 | Mixed working medium variable concentration volume adjusting absorption heat pump system |
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| CN201310528485.7A CN103528258B (en) | 2013-10-30 | 2013-10-30 | Mixed working medium variable concentration volume adjusting absorption heat pump system |
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| CN103528258B true CN103528258B (en) | 2015-07-08 |
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| CN106352559B (en) * | 2016-09-29 | 2018-07-31 | 山东超越地源热泵科技有限公司 | A kind of the solar heat pump and water heating system and control method of automatic adjustment working medium charging amount |
| CN107163917A (en) * | 2017-06-20 | 2017-09-15 | 大连理工大学 | Ionic liquid solution base nano-fluid directly absorbs solar airconditioning/heat pump method and apparatus |
| CN109611169B (en) * | 2018-10-29 | 2020-03-24 | 同济大学 | Non-azeotropic working medium organic Rankine cycle system with adjustable assembly dynamic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4386501A (en) * | 1981-07-29 | 1983-06-07 | Martin Marietta Corporation | Heat pump using liquid ammoniated ammonium chloride, and thermal storage system |
| JP3429905B2 (en) * | 1995-04-26 | 2003-07-28 | 東京瓦斯株式会社 | Absorption refrigerator |
| CN100498128C (en) * | 2007-06-01 | 2009-06-10 | 浙江大学 | Low grade energy driven and mechanical power driven composite heat pump, refrigeration system |
| CN100533004C (en) * | 2007-12-21 | 2009-08-26 | 河南科技大学 | High-efficiency low-temperature absorptive refrigerating machine |
| CN102128512B (en) * | 2011-04-19 | 2012-11-07 | 宁波工程学院 | Absorptive volume adjusting heat pump system |
| KR101136723B1 (en) * | 2011-12-05 | 2012-04-17 | 주식회사 수성이엔지 | Apparatus and method of absorption chiller heater that has a intermediate heat exchanger for summer operation |
| CN203629116U (en) * | 2013-10-30 | 2014-06-04 | 宁波工程学院 | Variable concentration volume control absorption type heat pump system for mixed working medium |
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