CN104154675B - A kind of lithium bromide jet suction type cooling cycle system of condensation boosting - Google Patents

A kind of lithium bromide jet suction type cooling cycle system of condensation boosting Download PDF

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CN104154675B
CN104154675B CN201410452860.9A CN201410452860A CN104154675B CN 104154675 B CN104154675 B CN 104154675B CN 201410452860 A CN201410452860 A CN 201410452860A CN 104154675 B CN104154675 B CN 104154675B
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communicated
water
tube connector
refrigerant
solution pipeline
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CN104154675A (en
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张承虎
李亚平
刘鑫
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Harbin Institute of Technology
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Harbin Institute of Technology
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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
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • 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]
    • Y02B30/62Absorption based systems

Abstract

A lithium bromide jet suction type cooling cycle system for condensation boosting, it relates to a kind of absorption type refrigeration circulating system.Condenser is communicated with evaporimeter by the first water as refrigerant path, evaporimeter is communicated with absorber by the second water as refrigerant vapor line, first weak solution pipeline is all communicated with absorber with one end of the first concentrated solution pipeline, the other end is all communicated with generator, solution heat exchanger is arranged on the first weak solution pipeline and the first concentrated solution pipeline, one end of first tube connector is communicated with ebullator, the other end is communicated with injector, one end of first water as refrigerant vapor line is communicated with generator, the other end is communicated with injector, one end of 3rd tube connector is communicated with condenser, the other end is communicated with injector, one end of second tube connector is communicated with ebullator, the other end is communicated with device for storing liquid, device for storing liquid is arranged on below condenser, refrigerant pump is arranged on the second tube connector.The present invention is used in absorption water source heat pump system.

Description

A kind of lithium bromide jet suction type cooling cycle system of condensation boosting
Technical field
The present invention relates to a kind of absorption type refrigeration circulating system, be specifically related to the lithium bromide jet suction type cooling cycle system of a kind of condensation boosting.
Background technology
Traditional absorption type refrigeration circulating system as shown in Figure 2, is formed primarily of generator 1, condenser 2, evaporimeter 3, absorber 5, solution heat exchanger 6, solution pump 10 etc. and connected pipeline.Generator 1 is under the heat effect of the first high-order thermal source 25, water as refrigerant steam lithium-bromide solution wherein being concentrated rear generation higher temperatures high pressure enters condensation in condenser 2 by the first water as refrigerant vapor line 42, the heat of condensation process release is absorbed by the second cooling thermal source 45, the water as refrigerant produced after condensation enters in evaporimeter 3 via after expansion throttling device 8 reducing pressure by regulating flow by water as refrigerant path 12, in evaporimeter 3, water as refrigerant becomes steam after absorbing the heat of low level heat energy 27, by the second water as refrigerant vapor line 15 to input in absorber 5 absorb by lithium-bromide solution, the heat of absorption process release is absorbed by the first cooling thermal source 26.Absorb the lithium-bromide solution concentration reduction of steam in absorber 5 after, driven by solution pump 10, by in the first weak solution pipeline 18 input generator 1, in generator 1, carry out heating concentrate, the concentrated solution produced after concentrated is returned in absorber 5 by the first concentrated solution pipeline 19 and continues to absorb steam, wherein, the lithium-bromide solution in the first concentrated solution pipeline 19 and the first weak solution pipeline 18 carries out heat exchange by solution heat exchanger 6.
In above-mentioned Lithium Bromide Absorption Refrigeration Cycle system, due to by the impact of solution self-characteristic, when temperature one timing of the first high-order thermal source 25 and low level heat energy 27, there is a upper limit in the condensing pressure of system, namely condensation temperature exists a upper limit.Because the second cooling thermal source 45 temperature must lower than condensation temperature, also there is a upper limit in the temperature therefore meeting the second cooling thermal source 45 that cooling requires, if the temperature of the second cooling thermal source 45 that physical condition can provide is higher than this upper limit, so above-mentioned traditional Lithium Bromide Absorption Refrigeration Cycle system cannot normally work.Such as, when above-mentioned traditional Lithium Bromide Absorption Refrigeration Cycle system being used for the heating condition of heat pump, when heat supply heat medium temperature to ask cools the temperature upper limit of thermal source 45 higher than above-mentioned second, then above-mentioned traditional Lithium Bromide Absorption Refrigeration Cycle system just cannot realize; When above-mentioned traditional Lithium Bromide Absorption Refrigeration Cycle system is used for the cooling condition of handpiece Water Chilling Units, if when the temperature of the cooling water that can provide cools the temperature upper limit of thermal source 45 higher than above-mentioned second, then above-mentioned traditional Lithium Bromide Absorption Refrigeration Cycle system also cannot realize.Therefore, raising condensing pressure and condensation temperature just can improve the temperature upper limit of the second cooling thermal source 45, make Lithium Bromide Absorption Refrigeration Cycle system meet application conditions and the field of higher second heat of cooling source temperature.
Summary of the invention
The present invention solves traditional Lithium Bromide Absorption Refrigeration Cycle system problem that condensing pressure and condensation temperature cannot improve separately in running, provides the lithium bromide jet suction type cooling cycle system of a kind of condensation boosting.
The lithium bromide jet suction type cooling cycle system of a kind of condensation boosting of the present invention comprises generator, condenser, evaporimeter, absorber, solution heat exchanger, expansion throttling device, solution pump, choke valve, first water as refrigerant vapor line, first water as refrigerant path, second water as refrigerant vapor line, first weak solution pipeline, first concentrated solution pipeline, injector, ebullator, first tube connector, second tube connector, 3rd tube connector, device for storing liquid and refrigerant pump, condenser is communicated with evaporimeter by the first water as refrigerant path, expansion throttling device is arranged on the first water as refrigerant path, evaporimeter is communicated with absorber by the second water as refrigerant vapor line, first weak solution pipeline is all communicated with absorber with one end of the first concentrated solution pipeline, first weak solution pipeline is all communicated with generator with the other end of the first concentrated solution pipeline, solution heat exchanger is arranged on the first weak solution pipeline and the first concentrated solution pipeline, solution pump and choke valve are between absorber and solution heat exchanger, and solution pump is arranged on the first weak solution pipeline, choke valve is arranged on the first concentrated solution pipeline, one end of first tube connector is communicated with ebullator, the other end of the first tube connector and the working media inlet communication of injector, one end of first water as refrigerant vapor line is communicated with generator, the other end of the first water as refrigerant vapor line and being communicated with by injection medium entrance of injector, one end of 3rd tube connector is communicated with condenser, the outlet of the 3rd tube connector other end and injector, one end of second tube connector is communicated with ebullator, the other end of the second tube connector is communicated with device for storing liquid, device for storing liquid is arranged on below condenser, refrigerant pump is arranged on the second tube connector, ebullator is by the second high-order heat source, evaporimeter is heated by low level heat energy, absorber is cooled by the first cooling thermal source, condenser is cooled by the second cooling thermal source, generator is by the first high-order heat source.
The present invention has following beneficial effect compared with the conventional method:
One, the present invention adds injector and ebullator on the basis of traditional Lithium Bromide Absorption Refrigeration Cycle system, between the water as refrigerant steam exported between ebullator due to the water as refrigerant steam pressure of injector outlet and the water as refrigerant steam of generator exports, namely the water as refrigerant steam pressure entering condenser is improved, thus improves the condensation temperature of Lithium Bromide Absorption Refrigeration Cycle system and the temperature upper limit of the second cooling thermal source.
Two, the design and running parameter of injector and ebullator is changed, regulation and control can be carried out very easily to condensing pressure, adapt to the temperature conditions for cooling water when heat supply heating agent during thermal condition or cooling condition better, for Lithium Bromide Absorption Refrigeration Cycle system provides a kind of new regulable control means.
Three, the present invention is under heating condition, can promote condensing pressure and condensation temperature as required.The raising of condensation temperature, can reach higher heat supply heat medium temperature, widens Lithium Bromide Absorption Refrigeration Cycle systematic difference field.
Four, the present invention is under cooling condition, the raising of condensation temperature, can reduce the requirement to coolant water temperature, adapts to higher cooling water temperature.
Five, structure of the present invention is simple, does not increase moving component, and operation maintenance is convenient, and systematic function is reliable, and energy-saving effect is remarkable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the present invention one;
Fig. 2 is the structural representation of traditional Lithium Bromide Absorption Refrigeration Cycle system.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 illustrates present embodiment, the lithium bromide jet suction type cooling cycle system of a kind of condensation boosting of present embodiment comprises generator 1, condenser 2, evaporimeter 3, absorber 5, solution heat exchanger 6, expansion throttling device 8, solution pump 10, choke valve 28, first water as refrigerant vapor line 42, first water as refrigerant path 12, second water as refrigerant vapor line 15, first weak solution pipeline 18, first concentrated solution pipeline 19, injector 29, ebullator 30, first tube connector 31, second tube connector 32, 3rd tube connector 11, device for storing liquid 33 and refrigerant pump 34, condenser 2 is communicated with evaporimeter 3 by the first water as refrigerant path 12, expansion throttling device 8 is arranged on the first water as refrigerant path 12, evaporimeter 3 is communicated with absorber 5 by the second water as refrigerant vapor line 15, first weak solution pipeline 18 is all communicated with absorber 5 with one end of the first concentrated solution pipeline 19, first weak solution pipeline 18 is all communicated with generator 1 with the other end of the first concentrated solution pipeline 19, solution heat exchanger 6 is arranged on the first weak solution pipeline 18 and the first concentrated solution pipeline 19, solution pump 10 and choke valve 28 are between absorber 5 and solution heat exchanger 6, and solution pump 10 is arranged on the first weak solution pipeline 18, choke valve 28 is arranged on the first concentrated solution pipeline 19, one end of first tube connector 31 is communicated with ebullator 30, the other end of the first tube connector 31 and the working media inlet communication of injector 29, one end of first water as refrigerant vapor line 42 is communicated with generator 1, the other end of the first water as refrigerant vapor line 42 and being communicated with by injection medium entrance of injector 29, one end of 3rd tube connector 11 is communicated with condenser 2, the outlet of the 3rd tube connector 11 other end and injector 29, one end of second tube connector 32 is communicated with ebullator 30, the other end of the second tube connector 32 is communicated with device for storing liquid 33, device for storing liquid 33 is arranged on below condenser 2, refrigerant pump 34 is arranged on the second tube connector 32, ebullator 30 is heated by the second high-order thermal source 35, second high-order thermal source 35 is for the water as refrigerant in ebuillition of heated device 30, evaporimeter 3 is heated by low level heat energy 27, low level heat energy 27 is for the water as refrigerant in heating fumigators 3, absorber 5 is cooled by the first cooling thermal source 26, first cooling thermal source 26 is for the lithium-bromide solution in cooling absorber 5, condenser 2 is cooled by the second cooling thermal source 45, second cooling thermal source 45 is for the water as refrigerant steam in cooler condenser 2, generator 1 is heated by the first high-order thermal source 25, first high-order thermal source 25 is for the lithium-bromide solution in heating generator 1.
In the bottom of condenser 2, device for storing liquid 33 is set, refrigerant pump 34 is sent in ebullator 30 by after the water as refrigerant supercharging in device for storing liquid 33, heat boiling is absorbed from the second high-order thermal source 35, the high pressure refrigerant vapour produced is as the working fluid of injector 29, carry out the low pressure refrigerant vapour produced in injection generator 1, the middle pressure refrigerant vapour pressure that injector 29 exports is between high pressure refrigerant vapour and low pressure refrigerant vapour.Middle pressure refrigerant vapour enters condenser 2, thus condensing pressure is improved, and injector 29 plays supercharging in the present system, as required, can promote condensing pressure in certain amplitude.
The operation principle of the lithium bromide jet suction type cooling cycle system of a kind of condensation boosting: generator 1 under the heat effect of the first high-order thermal source 25, water as refrigerant steam lithium-bromide solution wherein being concentrated rear generation by the first water as refrigerant vapor line 42 cause injector 29 by injection medium entrance; A part of water as refrigerant that condenser 2 condensation is got off is stored by device for storing liquid 33, refrigerant pump 34 extracts water as refrigerant from device for storing liquid 33 and boosts delivers to ebullator 30, water as refrigerant is heated by the second high-order thermal source 35 and produces high pressure water as refrigerant steam enters injector 29 working media import via the first tube connector 31 in ebullator 30, and injection causes the water as refrigerant steam of generator 1 generation from the first water as refrigerant vapor line 42 in injector 29, and flow out from outlet after mixing in injector 29 and enter condensation condenser 2 via the 3rd tube connector 11.According to the operation principle of injector, the outlet water as refrigerant steam pressure of injector 29 by higher than the water as refrigerant steam pressure produced by the generator of injection, thus improves the condensing pressure of condenser, correspondingly also improves condensation temperature.The heat of condensation process release in condenser 2 is absorbed by the second cooling thermal source 45 to be taken away.Another part water as refrigerant that in condenser, condensation produces enters in evaporimeter 3 via after expansion throttling device 8 reducing pressure by regulating flow by water as refrigerant path 12, in evaporimeter 3, water as refrigerant is evaporated to water as refrigerant steam after absorbing the heat of low level heat energy 27, and by the second water as refrigerant vapor line 15 to input in absorber 5 absorb by lithium-bromide solution, the heat of absorption process release is absorbed by the first cooling thermal source 26 to be taken away.Absorb the lithium-bromide solution concentration reduction of water as refrigerant steam in absorber 5 after, driven by solution pump 10, by in the first weak solution pipeline 18 input generator 1, in generator 1, carry out heating concentrate, the concentrated solution produced after concentrated is returned in absorber 5 by the first concentrated solution pipeline 19 and continues to absorb steam, wherein, the lithium-bromide solution in the first concentrated solution pipeline 19 and the first weak solution pipeline 18 carries out heat exchange by solution heat exchanger 6.Periodic duty like this, forms the lithium bromide jet suction type cooling cycle system of a kind of condensation boosting.
Detailed description of the invention two: composition graphs 1 illustrates present embodiment, the steam produced in the ebullator 30 of present embodiment is high pressure refrigerant vapour, and its pressure is higher than the pressure producing steam in generator 1.High pressure refrigerant vapour is as the working fluid of injector 29.Other composition and annexation identical with detailed description of the invention one.

Claims (2)

1. the lithium bromide jet suction type cooling cycle system of a condensation boosting, the lithium bromide jet suction type cooling cycle system of described a kind of condensation boosting comprises generator (1), condenser (2), evaporimeter (3), absorber (5), solution heat exchanger (6), expansion throttling device (8), solution pump (10), choke valve (28), first water as refrigerant vapor line (42), first water as refrigerant path (12), second water as refrigerant vapor line (15), first weak solution pipeline (18) and the first concentrated solution pipeline (19), condenser (2) is communicated with evaporimeter (3) by the first water as refrigerant path (12), expansion throttling device (8) is arranged on the first water as refrigerant path (12), evaporimeter (3) is communicated with absorber (5) by the second water as refrigerant vapor line (15), first weak solution pipeline (18) is all communicated with absorber (5) with one end of the first concentrated solution pipeline (19), first weak solution pipeline (18) is all communicated with generator (1) with the other end of the first concentrated solution pipeline (19), solution heat exchanger (6) is arranged on the first weak solution pipeline (18) and the first concentrated solution pipeline (19), solution pump (10) and choke valve (28) are positioned between absorber (5) and solution heat exchanger (6), and solution pump (10) is arranged on the first weak solution pipeline (18), choke valve (28) is arranged on the first concentrated solution pipeline (19), it is characterized in that: the lithium bromide jet suction type cooling cycle system of described a kind of condensation boosting also comprises injector (29), ebullator (30), first tube connector (31), second tube connector (32), 3rd tube connector (11), device for storing liquid (33) and refrigerant pump (34), one end of first tube connector (31) is communicated with ebullator (30), the other end of the first tube connector (31) and the working media inlet communication of injector (29), one end of first water as refrigerant vapor line (42) is communicated with generator (1), first other end of water as refrigerant vapor line (42) and being communicated with by injection medium entrance of injector (29), one end of 3rd tube connector (11) is communicated with condenser (2), the outlet of the 3rd tube connector (11) other end and injector (29), one end of second tube connector (32) is communicated with ebullator (30), the other end of the second tube connector (32) is communicated with device for storing liquid (33), device for storing liquid (33) is arranged on below condenser (2), refrigerant pump (34) is arranged on the second tube connector (32), ebullator (30) is heated by the second high-order thermal source (35), evaporimeter (3) is heated by low level heat energy (27), absorber (5) is cooled by the first cooling thermal source (26), condenser (2) is cooled by the second cooling thermal source (45), generator (1) is heated by the first high-order thermal source (25).
2. the lithium bromide jet suction type cooling cycle system of a kind of condensation boosting according to claim 1, it is characterized in that: the steam produced in described ebullator (30) is high pressure refrigerant vapour, its pressure is higher than the pressure producing steam in generator (1).
CN201410452860.9A 2014-09-05 2014-09-05 A kind of lithium bromide jet suction type cooling cycle system of condensation boosting Active CN104154675B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02251056A (en) * 1989-03-25 1990-10-08 Tokyo Gas Co Ltd Absorption type cycle apparatus
US5673566A (en) * 1993-01-27 1997-10-07 The University Of Sheffield Absorption refrigerators
CN101776346A (en) * 2009-12-31 2010-07-14 上海海事大学 High-efficiency ammonia-water absorption-type refrigeration device
CN102410662A (en) * 2011-09-30 2012-04-11 北京时代科仪新能源科技有限公司 Efficient heat energy treatment system and method
CN104019579A (en) * 2014-06-10 2014-09-03 中国科学院理化技术研究所 Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02251056A (en) * 1989-03-25 1990-10-08 Tokyo Gas Co Ltd Absorption type cycle apparatus
US5673566A (en) * 1993-01-27 1997-10-07 The University Of Sheffield Absorption refrigerators
CN101776346A (en) * 2009-12-31 2010-07-14 上海海事大学 High-efficiency ammonia-water absorption-type refrigeration device
CN102410662A (en) * 2011-09-30 2012-04-11 北京时代科仪新能源科技有限公司 Efficient heat energy treatment system and method
CN104019579A (en) * 2014-06-10 2014-09-03 中国科学院理化技术研究所 Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat

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