CN205300024U - Lithium bromide vapor compression formula air conditioner - Google Patents
Lithium bromide vapor compression formula air conditioner Download PDFInfo
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- CN205300024U CN205300024U CN201620016397.8U CN201620016397U CN205300024U CN 205300024 U CN205300024 U CN 205300024U CN 201620016397 U CN201620016397 U CN 201620016397U CN 205300024 U CN205300024 U CN 205300024U
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Abstract
The utility model relates to a lithium bromide vapor compression formula air conditioner, by coupling phase transition heat exchanger evaporation unit combination evaporative concentration weak solution in the multiunit, the first order to third level evaporation unit mainly acts on the concentration of weak solution, the flash steam latent heat flash distillation of one -level generated steam and supplies back one -level utilization before back one -level was utilized, the heat source input of the first order is got back to to the steam that the fourth stage generated after mechanical internal heat booster pump heats, not enough heat source initial start adopts organic working medium water resource heat pump to generate hot water to incorporate regeneration steam system into through the vapor generation system. The condensation latent heat of steam is made regeneration steam by complete recycle in the weak solution evaporation process, and high pressure and temperature are put forward through mechanical vapor recompression to regeneration steam, and the living steam that makes regeneration steam can replace former input uses as the heat source, because the regeneration heat source is utilized many times, the energy consumption that significantly reduces, the energy efficiency ratio reaches COP=13, because of the emission of no heat of condensation, reduced by 50% cooling water quantity.
Description
[technical field]
This utility model relates to the multistage weak solution method for concentration of a kind of driven by power dual vapor compressibility, all absorb high temperature water as refrigerant steam condensation discharge heat at process of refrigerastion and be back to refrigeration system, simultaneously part reuse low temperature agent water vapour discharge heat runs required heat energy for steam compression heat pump, heat pump generates new heat energy and supplements partial heat energy needed for refrigeration system, is derived from the absorption type refrigerating unit of ultrahigh energy efficiency ratio.
[background technology]
Traditional absorption-type refrigerating method has had the production history of last 100 years, adopts the thermodynamic process and equipment that finalize the design almost, in actual use, with the most use be the Lithium Bromide Absorption Refrigeration Cycle for air-conditioning and for freezing, the ammonia absorption type kind of refrigeration cycle of air-conditioning. the impact that recent decades specifies owing to being subject to " Montreal Agreement ", reduce the use of fluorine carbide, and utilize waste heat as driving heat source to reducing the meaning that carbon emission has, absorption-type refrigerating method obtains bigger popularization and development, open source literature CN200510060377.7 " lithium bromide refrigerating air conditioner that multiple-energy-source drives " such as, propose to make use of solar energy, microwave and fuel oil (gas) various energy resources, CN101871702A " double heat source high-efficiency absorption refrigerating plant " proposes the Application way of double, two thermal source, CN103438605A " absorbs and heat exchange type Absorption Cooling System occurs " and proposes the solar energy method as thermal source, Japan Patent 2009-236440 " Gasheatpuptypeairconditioningdeviceorrefrigeratingdevice " and 2009-236441 " Heatpuptyperefrigeratingdevice " develops with gas engine used heat as air-conditioning, the absorption-type refrigerating method of refrigeration machine thermal source. this kind of refrigerating method is applied to the utilization of low temperature exhaust heat more. but these improve the Energy Efficiency Ratio that all can not improve Absorption Cooling System itself.
Up-to-date GB29540-2013 " lithium bromide adsorption water chilling unit energy efficiency market and efficiency grade " standard determines that the COP of double-effect lithium bromide absorption type unit is 1.12��1.4, and the input heat source stream of double-effect lithium bromide refrigeration machine is 150 DEG C of even higher temperatures, and the absorption cold COP of unit processed of ammonia-water is only 0.3��0.4.The efficiency of the corrosion simultaneity factor that the temperature that the relevant middle proposition of disclosed patent documentation: ZL011426144 " three-effect absorption-type refrigerator in parallel with steam compressed " reduces previous stage generator in improving absorption type refrigerating unit Energy Efficiency Ratio reduces equipment slightly improves, and CN101520250 " efficient two-stage absorption refrigerating device " proposes one more conveniently route and slightly improves efficiency. In the recent period owing to steam mechanical compressing hot pump has the sensible heat that can promote low temperature exhaust heat steam by only small mechanical power, become high-temperature steam with regard to its latent heat recyclable, utilize as high temperature heat source, therefore come into one's own in heat energy system, at Chinese patent CN201010198705.0 " by pump for extracting power plant waste heat heating-condensing water system "; Chinese patent CN20101063699.5 " cogeneration of heat and power coupling heat pump feasible region cold-hot combined supply system and method "; Chinese patent CN200910223748.7 " low-temperature waste heat power generation system exhaust steam condensation process self-coupling cold source heat pump circulating device "; Chinese patent CN201010163688.7 " central heating system of coupling circulating water heat pump of power plant with cogeneration and method " has been directed to utilize low-temperature heat source, including water and steam, improved the Energy Efficiency Ratio of the power generation and heat supply system of whole cogeneration of heat and power by source pump; But all without relating to the problem utilizing steam mechanical compressing hot pump to be applied in refrigeration, Air-conditioning Cycle, to improve the Energy Efficiency Ratio problem of refrigeration unit itself.
The refrigerant vapour that heat absorption generates when high tension generator carries out weak solution concentration needs to absorb substantial amounts of vaporization heat energy in low underlying reason is that of Energy Efficiency Ratio of absorption-type refrigerating method, and the heat contained by the refrigerant vapour of high temperature discharges the heat of transformation in condensation process and is all discharged into outside system, it does not have recycle; The heat of condensation heat that the refrigerant vapour of same low temperature discharges when being changed into liquid phase by vapour phase in entering low-pressure absorber is also discharged into outside refrigeration system, also without being recycled utilization. At home and abroad disclosed patent documentation does not all have water as refrigerant steam phase transforming recuperation of heat and the report for self refrigeration system. CN201020188184.6 " dual-effect type-II lithium bromide absorption heat pump unit " simply develops the source pump of a kind of heat supply, it does not have solve above-mentioned circulation is discharged the reuse of heat. At CN200820115165.3 " single-effect type third-kind absorption heat pump that a kind of cold and hot two-way simultaneous utilizes ", make use of the discharge of a part heat for heat supply, it is possible to simultaneously for cold-peace heat supply, COP is up to 2.2��2.6. But because being not be again back to system for reducing driving refrigeration system energy input, so the reuse problem of discharge heat can not fundamentally be solved. Also without the problem solving low-energy-efficiency ratio, therefore the Energy Efficiency Ratio of refrigeration and heating, still all very low.
Absorption refrigeration, the major reason that Air-conditioning Cycle cost is high is, many employing pipe shell type heat exchange equipment and spray mass transfer method traditionally, heat transfer, mass tranfer coefficient is low, heat exchange area is big, also need to circulating pump, spray-absorption solution and cold-producing medium repeatedly, and at Chinese patent CN200480010361.9 " absorber with external circuit and heat exchanger and include heat pump and the air conditioning system of this absorber or heat exchanger " with plate type heat exchanger as absorber or condenser, to improve heat exchange efficiency, then condenser and absorber are assembled in a plate type heat exchanger including US Patent No. 6176101B1 " FLAT-PLATEABSORBERSANDEVAPORATORSFORABSORPTIONCOOLERS ", this equipment is that recovering condensing heat provides possibility, but this patent is not for solving the Energy Efficiency Ratio raising of absorption-type refrigerating method and reducing system cost proposition solution.ZL201510465086X " a kind of Multi-effect plate type rising film counter flow evaporation plant and method " proposes board-like multiple-effect device at liquid-gas phase transition process application mode, open wherein energy-efficient feature and application process, but has not yet to see for absorption system.
Absorption refrigeration is all using thermal source as driving energy, start and the work of running refrigerating system, what consume is heat energy, output is cold, obviously such device can not be used in the area not having thermal source, the scope of application is restricted, and there is presently no the input of a kind of full electric power and goes to meet the lithium bromide absorption chiller system driven with normal operation, the method and apparatus that simultaneously be also satisfied high Energy Efficiency Ratio.
[summary of the invention]
The purpose of this utility model is in that to be greatly improved the Energy Efficiency Ratio of refrigeration machine by reclaiming the agent vapour latent heat of discharge, it is back to refrigeration system by all reclaiming the water as refrigerant discharge heat when high temperature evaporation condenses, the low-temperature evaporation discharge of partially recycled water as refrigerant is hot and is provided that to refrigeration system by power-actuated vapor compression heat pump generation supplemental heat, thus obtains high Energy Efficiency Ratio. The method that application in order to expand Absorption Refrigerator the utility model proposes can meet the Absorption Refrigerator that can also run in the occasion without thermal source supply. To achieve these goals, content includes:
Solution heat exchanger H5, cold side-entrance connects low-pressure absorber DX by pipeline, and cold side outlet port is connected to couple in the 3rd the cold side-entrance of phase-change heat-exchanger H3 by pipeline, and hot side-entrance connects the first flash separation tank S1 bottom concentrated solution outlet by pipeline, hot side outlet is connected with absorber DX import
First board-like interior coupling phase-change heat-exchanger H1, cold side-entrance is connected with the second flash separation tank S2 bottom solution line, connecting line series solution circulating pump E2, cold side outlet port connects the first flash separation tank S1 by pipeline, hot side-entrance connects the compressed vapour outlet of Mechanical Vapor Compression M1 by steam tank H0
Second board-like interior coupling phase-change heat-exchange H2, hot side-entrance is connected by the top indirect steam outlet of pipeline and the first flash separation tank S1, the hot side-entrance of hot side outlet and the first water as refrigerant cooler H6 connects, cold side-entrance is connected with the 3rd flash separation tank S3 bottom solution line, connecting line series solution circulating pump E3, cold side outlet port connects the second flash separation tank S2 by pipeline
Coupling phase-change heat-exchanger H3 in three-plate type, hot side-entrance is connected by the top indirect steam outlet of pipeline and the second flash separation tank S2, the hot side-entrance of hot side outlet and the second water as refrigerant cooler H7 connects, cold side-entrance is connected with the weak solution outlet conduit of solution heat exchanger H5, cold side outlet port connects the 3rd flash separation tank S3 by pipeline
4th board-like interior coupling phase-change heat-exchanger H4, hot side-entrance is connected by the top indirect steam outlet of pipeline and the 3rd flash separation tank S3, the hot side-entrance of hot side outlet and the 3rd water as refrigerant cooler H8 connects, cold side-entrance is connected with the hot side lower part steam condensate (SC) outlet conduit of coupling phase-change heat-exchanger H1 in first, connect in pipeline condensate water circulatory pump E1, cold side outlet port connects the 4th flash separation tank S4 by pipeline
4th flash separation tank S4 upper outlet is connected with the import of steam mechanical compressor M1, there are two imports at middle part, the cold side outlet port of one and the 4th board-like interior coupling phase-change heat-exchanger H4 connects, another is connected with the upper steam (vapor) outlet of phase-changing energy-storing device HSM, and the cold side-entrance of lower part outlet and the 4th board-like interior coupling phase-change heat-exchanger H4 connects.
Mechanical vapor-compression pump M1, has inlet and outlet, and its import is connected by pipeline with the vapor phase exit of flash separator S4, and the hot side-entrance exporting interior coupling phase-change heat-exchanger H1 board-like with first is connected by pipeline,
Three water as refrigerant cooler (H6, H7, H8) corresponding respective board-like interior coupling phase-change heat-exchangers (H2, H3, H4) at different levels respectively, hot side-entrance is connected by pipeline with the board-like interior hot side outlet of coupling phase-change heat-exchanger, outlet is connected through U-tube with the intake header of low pressure evaporator DZ, cold side-entrance is connected with the coolant outlet of low-pressure absorber DX, and cold side outlet port is connected with the low-temperature heat source import of vapor compression heat pump M2 absorption heat pump.
Phase-changing energy-storing device HSM, upper steam outlet is connected by pipeline with the 4th flash separation tank S4 import, cold side-entrance is connected by pipeline with outside moisturizing, the input of system drive heat energy when hot side-entrance is connected for starting with the raw steam pipework in outside, has two closed cycle line portals to pass in and out pipeline with the output heat source water of vapor compression heat pump M2 respectively and connects.
Vapor compression heat pump M2 relies on driven by power, the pipeline absorbing low-temperature heat source is connected with the cold side outlet port of agent water cooler (H6, H7, H8), vapor compression heat pump M2 low-temperature heat source water out is connected with the import of the cooling water pipe of low-pressure absorber DX, and the high temperature heat source water that vapor compression heat pump M2 produces goes out/and import is connected formation closed cycle with the import/export of phase-changing energy-storing device HSM.
Described board-like interior coupling phase-change heat-exchanger is plate type heat exchanger, plate-type evaporator, plate-type condenser, shell-and-tube heat exchanger.
Described water as refrigerant cooler is plank frame, and the water as refrigerant chilling temperature needed for the board-like interior coupling phase-change heat-exchanger of corresponding each position realizes controlling by the automatic control components and parts configured.
This utility model also includes a kind of fully utilized electric power switch machine merit type of drive, the absorption-type refrigerating method of fully recovering high temperature agent water-setting stagnation of pathogenic heat, the not enough heat energy that refrigeration system is still needed meets by reclaiming the high-temperature-hot-water produced of low temperature agent water-setting stagnation of pathogenic heat by assisting heat patching device vapor compression heat pump M2, vapor compression heat pump adopts the mode of outsourcing to realize, therefore is not detailed in present case.
The evaporation separative element that weak solution evaporation and concentration is combined by the board-like interior coupling phase-change heat-exchanger (H1, H2, H3) of the first to the third level and flash separation tank (S1, S2, S3) undertakes, and the refrigerant vapour that previous stage generates is used for the heat energy needed for heat dilute solution by next stage.
Regeneration steam is to reclaim the condensation water heating to entering the cold side of H4 of the previous stage water as refrigerant steam thermal energy by the 4th board-like interior coupling phase-change heat-exchanger H4, condenses water enthalpy and reaches go out H4 after setting requires and generated by the 4th flash separation tank S4.
The low-order bit regeneration steam that mechanical vapor-compression pump M1 absorbs from the 4th flash separation tank S4 makes regeneration steam supercharging enter the hot side of the first board-like interior coupling phase-change heat-exchanger H1 after heating the regeneration steam generating higher order position through power-actuated mechanical power,
Under driven by power, generate 100 DEG C of high-temperature-hot-waters from the cryogenic energy of low-pressure absorber DX cooling circulating water mean temperature 45 DEG C through vapor compression heat pump M2 by the vapor compression heat pump M2 of Equations of The Second Kind vapor compression heat pump principle design supplement the not enough energy needed for system by reclaiming.
The utility model proposes the mode of a kind of multistage lithium bromide absorption chiller system refrigeration additional vapor compression heating combined equipment concurrent heating, make refrigeration system with lithium bromide absorption all reclaimed when refrigerating operaton the water as refrigerant discharge heat when high temperature evaporation condenses and in addition fully recovering in this refrigerator system, vapor compression heat pump reuse is cooled down water and water as refrigerant cooler (H6 by low-pressure absorber DX, H7, H8) the part cryogenic temperature condensation heat discharged also is produced high-temperature-hot-water and is back to this refrigeration system heat energy as a supplement, thus increase substantially the Energy Efficiency Ratio of lithium bromide water absorption refrigerating plant, due to pass through reclaimed refrigeration system discharged at lower temperature heat be used as supplement heat energy meet system even running institute required, further improve usefulness simultaneously.Owing to this project proposes the lithium bromide refrigerating method that the input of full electric power drives, usual absorption cold machine processed runs the input needing heat energy, owing to have employed full electric power input pattern, expands the use scope of such device. The Energy Efficiency Ratio COP of the method and apparatus of this utility model example can reach 13, and this to exceed about more than 10 times than lithium bromide refrigerator COP=0.7��1.4. It is calculated as follows with this utility model example: obtain the cold Q producedCold=3489kw/h, inputs electricity total amount QAlways=265kw, wherein: 1, MVR steam mechanical compression M1=126kw, 2, all kinds of circulating pump E=64kw. 3, water source vapor compression heat pump M2=75KW.COP=Q cold/Q input=3489kw/265kw=13.
[accompanying drawing explanation]
Fig. 1 is the main apparatus structure flow chart of embodiment;
Figure couples in the coupling phase-change heat-exchanger H2 second level flash separation tank S2 third level in the coupling phase-change heat-exchanger H1 first order flash separation tank S1 second level in the first order coupling phase-change heat-exchanger H4 fourth stage steam in the phase-change heat-exchanger H3 third level flash separation tank S3 fourth stage and dodges point tank S4 solution heat exchanger H5 phase-changing energy-storing device HSM mechanical vapor-compression pump M1 vapor compression heat pump M2 first order water as refrigerant cooler H6 second level water as refrigerant cooler H7 third level water as refrigerant cooler H8 circulating pump (E1��E6) low pressure cryogen water evaporimeter DZ low-pressure absorber DX
[detailed description of the invention]
Hereinafter, being described further for this utility model with accompanying drawing, embodiment and accompanying drawing are only used for illustrating rather than limit protection domain of the present utility model in conjunction with the embodiments. As it is shown in figure 1, main device is as follows in the present embodiment:
Steam mechanical compressor M1: can be centrifugal, roots-type, shuttle version, meet the supercharging purposes of steam.
Interior coupling phase-change heat-exchanger: select board-like version, it is also possible to for shell-tube type. Including: version, to import and export and connect, weak solution side Process flow is for rising film Forced Mixing pattern, and thermal source and low-temperature receiver are reflux type. The condensing cooling process of water as refrigerant steam continuously performs in board-like interior coupling phase-change heat-exchanger and water as refrigerant cooler, and cold side is undertaken by two media segmentation, in the weak solution that board-like interior coupling phase-change heat-exchanger section cooling medium is cold side, originate from the cooling circulating water of low-pressure absorber DX at water as refrigerant cooler section cooling medium. The vacuum of flash separation tank, water as refrigerant chilling temperature automatically lock control by PLC.
Vapor compression heat pump M2 inputs low-temperature water heating, it is possible to be the various types of compact formula heat pump with various working medium or the cold-producing medium of polynary working medium, and the compressor that need to configure Two-stage Compression also optional high pressure ratio according to present case meets input and exports the requirement that the temperature difference is bigger.
Phase-changing energy-storing device vaporizer therein adopts plank frame form, and including import, outlet, the pump of cold side forced circulation configuration, circulating ratio automatically controls according to design.
Solution heat exchanger H5, cold side-entrance connects the weak solution outlet of low-pressure absorber DX by pipe circle pump E5, cold side outlet port is connected to couple in the 3rd the cold side-entrance of phase-change heat-exchanger H3 by pipeline, hot side-entrance connects the first flash separation tank S1 bottom concentrated solution outlet by pipeline, and hot side outlet is connected with absorber DX concentrated solution import.
First board-like interior coupling phase-change heat-exchanger H1, cold side-entrance is connected with the second flash separation tank S2 bottom solution line, connecting line series solution circulating pump E2, cold side outlet port connects the first flash separation tank S1 by pipeline, and hot side-entrance connects the compressed vapour outlet of Mechanical Vapor Compression M1.
Second board-like interior coupling phase-change heat-exchange H2, hot side-entrance is connected by the top indirect steam outlet of pipeline and the first flash separation tank S1, the hot side-entrance of hot side outlet and the first water as refrigerant cooler H6 connects, cold side-entrance is connected with the 3rd flash separation tank S3 bottom solution line, connecting line series solution circulating pump E3, cold side outlet port connects the second flash separation tank S2 by pipeline.
Coupling phase-change heat-exchanger H3 in three-plate type, hot side-entrance is connected by the top indirect steam outlet of pipeline and the second flash separation tank S2, the hot side-entrance of hot side outlet and the second water as refrigerant cooler H7 connects, cold side-entrance is connected with the weak solution outlet conduit of the cold side of solution heat exchanger H5, and cold side outlet port connects the 3rd flash separation tank S3 by pipeline.
4th board-like interior coupling phase-change heat-exchanger H4, hot side-entrance is connected by the top indirect steam outlet of pipeline and the 3rd flash separation tank S3, the hot side-entrance of hot side outlet and the 3rd water as refrigerant cooler H8 connects, cold side-entrance is connected with the hot side lower part steam condensate (SC) outlet conduit of coupling phase-change heat-exchanger H1 in first, connect in pipeline condensate water circulatory pump E1, and cold side outlet port connects the 4th flash separation tank S4 by pipeline.
4th flash separation tank S4 upper outlet is connected with the import of steam mechanical compressor M1, there are two imports at middle part, the cold side outlet port of one and the 4th board-like interior coupling phase-change heat-exchanger H4 connects, another is connected with the upper outlet of phase-changing energy-storing device HSM, and lower part outlet is connected with the board-like interior cold side-entrance pipeline coupling phase-change heat-exchanger H4.
Mechanical vapor-compression pump M1, has inlet and outlet, and its import is connected by pipeline with the vapor phase exit of flash separation tank S4, and the hot side-entrance exporting interior coupling phase-change heat-exchanger H1 board-like with first is connected by pipeline.
Three water as refrigerant cooler (H6, H7, H8) corresponding respective board-like interior coupling phase-change heat-exchangers (H2, H3, H4) at different levels respectively, hot side-entrance is connected by pipeline with the board-like interior hot side outlet of coupling phase-change heat-exchanger, hot side outlet is connected with the intake header road of low pressure evaporator DZ, cold side-entrance is connected with the coolant outlet of low-pressure absorber DX, and cold side outlet port is connected with the low-temperature heat source water inlet of vapor compression heat pump.
Phase-changing energy-storing device HSM, upper outlet and the 4th flash separation tank S4 import are connected by pipeline, low-temperature receiver import is connected with externally input water lines, thermal source import is connected to meet needs during system start-up with externally input steam pipework, supplemental heat source has two entry/exit pipelines to be connected formation closed circuit respectively with the hot water output/return port of vapor compression heat pump M2, the vaporizer of phase-changing energy-storing device HSM configuration is plank frame, and cold side is configured with circulating pump.
Low-pressure absorber DX utilizes concentrated solution to absorb for the carrying out of water as refrigerant steam, it also includes coolant outlet and import, cooling water output point two-way configuration: (1) goes water as refrigerant cooler (H6, H7, H8) that water as refrigerant is cooled down, (2) return as recirculated cooling water after going air cooling compressor cooling in the cooling water coil group of low-pressure absorber DX.
First, second, third flash separator (S1, S2, S3), has import, outlet, and top gas phase outlet is connected with the coupling hot side-entrance of phase-change heat-exchanger in rear stage by pipeline. Bottom liquid phases exports, and liquid-phase outlet is connected with the cold side-entrance of coupling phase-change heat-exchanger in previous stage by pipeline and pipeline force (forcing) pump, and the import at middle part is then connected with interior coupling phase-change heat-exchanger cold side outlet port at the corresponding levels by pipeline.
The energy that drives in the present embodiment is the mechanical power that electric power converts, therefore properly functioning consumed energy is only electric energy, it is mainly: the secondary cycle steam of (1) low-order bit and supplementary steam are the processes that the mechanical vapor-compression pump mechanical power done work by electric power is converted into heat energy.(2) various circulating pump work process consume electric energy. (3) electric energy that water source vapor compression heat pump consumes.
Level Four evaporation element forms by board-like interior coupling phase-change heat-exchanger (H1, H2, H3, H4) and flash distillation vapor-liquid separation tank (S1, S2, S3, S4), system work is in airtight vacuum state, for keeping vacuum and the high heat exchanger efficiency system of maintenance to be configured with vacuum pump group and its UNICOM, vacuum pump extracts on-condensible gas and preset system vacuum state; Individual unit group has different vacuum level requirements respectively, all has corresponding absolute pressure value to ensure so often organizing.
[principle and process description]
Lithium bromide weak solution concentration cycles process: heat source stream enters the weak solution that cold side enters by the hot side of the first board-like interior coupling phase-change heat-exchanger H1 and is heated, weak solution increases enthalpy intensification and goes out then entrance flash separation tank S1 in vapour-liquid mixed phase from the first cold side of board-like interior coupling phase-change heat-exchanger H1 after absorbing received heat, in S1, shwoot is separated into vehicle repair major, vapour phase is that agent water vapour goes out the S1 thermal source as rear stage, and the steam advancing into the hot side of H1 cooled down as condensed water by the solution of cold side when going out H1, condensed water enters the heating of the agent water vapour of the cold side joint heat side of the 4th board-like interior coupling phase-change heat-exchanger H4 by condensate circulating pump E1, it is the simple agent water vapour thermal source as rear stage from the isolated steam of S1, the weak solution that cold side is entered by the hot side of the second board-like interior coupling phase-change heat-exchanger H2 entered is heated, the weak solution increasing enthalpy that is heated heats up to go out the cold side of H2 in vapour-liquid mixed phase and enter flash separation tank S2, in S2, shwoot is separated into vehicle repair major, vapour phase is that agent water vapour goes out the S2 thermal source as rear stage, and the agent water vapour entering the hot side of H2 has been cooled down by the solution of cold side when going out H2 and has born water for agent water-setting, agent water is inhaled in low pressure evaporator DZ after indirectly being cooled down by the recirculated cooling water from low-pressure absorber DX of cold side by agent water cooler H6 under the effect of negative pressure, same process is the 3rd, 4th board-like interior coupling phase-change heat-exchanger (H3, H4) hot side agent water vapour carries out to the path of agent water, go out H3, the agent water of H4 is via agent water cooler (H7, H8) low pressure evaporator DZ is entered afterwards, go out the weak solution that in the agent water vapour entrance rear stage three-plate type of flash separation tank S2, cold side is entered by the hot side of coupling phase-change heat-exchanger H3 to be heated, the weak solution increasing enthalpy that is heated heats up to go out the cold side of H3 in vapour-liquid mixed phase and enter flash separation tank S3, in S3, shwoot is separated into vehicle repair major, vapour phase is that agent water vapour goes out S3 and enters the hot side condensed water that cold side is entered of the board-like interior coupling phase-change heat-exchanger H4 of rear stage the 4th and be heated, the condensed water increasing enthalpy that is heated heats up to go out the cold side of H4 in vapour-liquid mixed phase and enter flash separation tank S4, in S4, shwoot is separated into vehicle repair major, vapour phase is that regeneration steam goes out S4 entrance steam mechanical compressor M1, regeneration steam in M1 is all improved by temperature, pressure after compressing and heat content and meets the MI that to obtain of heat source stream parameter returns to the first board-like interior coupling phase-change heat-exchanger H1.
Lithium bromide weak solution (60%) goes out low-pressure absorber DX and exports via circulating pump E7, via the cold side of solution heat exchanger H5 with via enter after entering the isolated liquid phase of S2 (62.67%) after entering the isolated liquid phase of S3 (61.33%) after entering the heating of the cold side joint heat side agent water vapour coupling phase-change heat-exchanger H3 in three-plate type after the high temperature concentrated solution heat exchange of hot side and go out bottom S3 the heating of the cold side joint heat side steam entering the second board-like interior coupling phase-change heat-exchanger H2 via circulating pump E3 and go out bottom S2 the heating of the cold side joint heat side steam entering the first board-like interior coupling phase-change heat-exchanger H1 via circulating pump E2 the concentrated solution that the isolated liquid phase of S1 (64%) is end of a period concentration go out bottom S1 carry out heat exchange via the solution heat exchanger H5 weak solution that cold side is entered after go out H5 and enter low-pressure absorber DX.
The agent water of entrance low pressure evaporator DZ extremely low absolute draft evaporating temperature in device is 5 DEG C, instant vaporization, during vaporization, in absorber, the circulating refrigerant hydro-thermal amount in heat exchange coil causes chilled water output temperature to be 7 DEG C, during return, chilled water temperature is 12 DEG C, at the low pressure evaporator DZ agent water vapour generated by entering low-pressure absorber DX with low-pressure absorber DX connecting line, the dense lithium-bromide solution that agent water vapour is entered in device in low-pressure absorber DX is absorbed, also become liquid phase from vapour phase at this process agent water vapour and discharge the heat of condensation simultaneously, the heat of condensation is taken out of by the cooling circulating water in the coil exchanger in DX device.
[process description]
1, initial start-up needs the raw steam outside input, raw steam and the indirect steam flow process generated from the first order to fourth stage flash separation tank are as follows: the coupling board-like interior coupling phase-change heat-exchanger H4-flash separation tank S4-Mechanical Vapor Compression M1 of phase-change heat-exchanger H3-flash separation tank S3-the 4th in outside raw board-like board-like interior coupling phase-change heat-exchanger H2-flash separator S2-the three-plate type of interior coupling phase-change heat-exchanger H1-flash separator S1 (generation indirect steam)-second of steam entrance-phase-changing energy-storing device HSM-flash separation tank S4-Mechanical Vapor Compression M1-the first.
2, enter normality to run: regeneration steam substitutes outside raw steam, steam flow: the coupling board-like interior coupling phase-change heat-exchanger H4-flash separation tank S4-Mechanical Vapor Compression M1 of phase-change heat-exchanger H3-flash separation tank S3-the 4th in board-like board-like interior coupling phase-change heat-exchanger H2-flash separator S2-the three-plate type of interior coupling phase-change heat-exchanger H1-flash separator S1 (generation indirect steam)-second of Mechanical Vapor Compression M1-the first
3, weak solution concentration flow path: coupling phase-change heat-exchanger H3-flash separator S3-the second board-like interior coupling phase-change heat-exchanger H1-flash separator S1-solution heat exchanger H5-low-pressure absorber DX. of board-like interior coupling phase-change heat-exchanger H2-flash separator S2-the first in low-pressure absorber DX-solution heat exchanger H5-the three-plate type
4, water as refrigerant flow process: weak solution is separated into water as refrigerant steam-enter board-like interior coupling phase-change heat-exchanger (H2��H4)-water as refrigerant cooler (H6��H8)-low pressure evaporator DZ. at flash separator (S1��S3) shwoot
5, the heat energy steam also needing 4% according to heat Balance Calculation when properly functioning supplements, supplement heat energy and high-temperature-hot-water thereof and generate that process is raw and method is as follows: have power-actuated vapor compression heat pump M2 to absorb the heat energy that the low-temperature water heating from water as refrigerant cooler (H6��H8) carries, cold-producing medium vaporization and condensation process in heat pump is to be accomplished via two-stage compressor effect, the high-temperature-hot-water produced 95 degree output is used to refrigeration system as the supplementary heat energy of refrigeration system, its pump principle belongs to the category of second class absorption heat pump, namely absorb low-temperature heat source and produce output high temperature heat source. in this example source pump, driving heat source water originates from its mean temperature of recirculated cooling water 46 DEG C of refrigeration system discharge heat. and this portion of energy of used heat event for system discharge consumed due to the Equations of The Second Kind vapor compression heat pump of supplementary energy is not counted in actual consumption, and this increase simultaneously can reduce again the discharge of thermal pollution further.
6, the regeneration steam and the supplementary steam that recycle (now relatively low for its pressure and temperature of low-order bit steam and tool is lower than the parameter of heat source stream) are incorporated to the 4th flash separation tank S4 and are inhaled into steam mechanical compressor pump M1, the compressed output intermittent fever break of low order steam obtains rising, and supercharging, heat the parameter reaching technological design, via airtight pipeline output to coupling phase-change heat-exchanger H1 in the first order, enter H1 hot side the lithium bromide weak solution of cold side to be heated to setting evaporating temperature entrance first order flash separator S1, vapour-liquid moment separates, the water as refrigerant steam occupying tank top enters the hot side of coupling phase-change heat-exchanger H2 in the second level via pipeline, the weak solution of another cold side is heated in device as thermal source, to weak solution temperature rise to evaporating temperature, the same with the process coupling phase-change heat-exchanger H1 entrance flash separation tank S1 in the first order.Water as refrigerant the hot side of the second board-like coupling phase-change heat-exchanger H2 through cooling, become mutually condensing water export by the road be cooled to design temperature to water as refrigerant cooler H6 then through the cooling water brief introduction of opposite side after water as refrigerant enter low pressure evaporator DZ. The third level, the fourth stage (regeneration steam level) weak solution heating evaporation and separation etc. all constitute the same with the front second level. The vacuum of every one-level is different, absolute pressure from high to low, the existing first order > second level > third level > fourth stage, corresponding evaporating temperature is also arranged in order.
Weak solution is exitted into coupling phase-change heat-exchanger H3 in the third level by solution heat exchanger H5, the solution of entrance sudden strain of a muscle point tank S3 elimination portion of water enters coupling phase-change heat-exchanger H2 and sudden strain of a muscle in the second level further along via solution circulation pump and divides coupling phase-change heat-exchanger H1 and sudden strain of a muscle in tank S2, the first order to divide a tank S1, performs identical step.
In the first order, the condensed water of the coupling hot side of phase-change heat-exchanger H1 enters the cold side of coupling phase-change heat-exchanger H4 in the fourth stage under the promotion of condensate water circulatory pump E1 after going out device, it is heated after accumulation of energy to enter the 4th sudden strain of a muscle point tank S4 and the phase-changing energy-storing device HSM steam entered and merges generation regeneration steam, go out sudden strain of a muscle and divide entrance steam mechanical compressor M1 after device S4.
Steam mechanical compressor M1 heats the process sensor-based system by configuring in supercharging, control system is to automatically carrying out the operating procedures such as moisturizing, speed governing, pressure regulation after each parameter comparison, process, and then ensures that the saturation of regeneration steam of output, temperature, pressure, flow etc. are constant.
It is both needed to that system carries out a small amount of heat energy in time in normal course of operation Theoretical Calculation and actual motion loss supplement, dynamic quantity collects Centralized Controller process after passing through a data acquisition unit of point, by the parameter of adjustment Equations of The Second Kind vapor compression heat pump systems to meet normal operation needs.
Low pressure evaporator DZ, low-pressure absorber DX adopt traditional contemporary devices, retain its original control system, vacuum system, weak solution Sprayer Circulation system, water as refrigerant Sprayer Circulation system, therefore briefly describe. Weak solution multistage evaporation concentration systems is configured with vacuum equipment, meets system vacuum duty, vacuum, fixed gas extract, system intialization vacuum.
Weak solution flows to and heat source stream flows in adverse current, in interior coupling phase-change heat-exchanger also in adverse current to.
Claims (6)
1. a lithium bromide steam compressing air conditioner machine, it is characterised in that including:
Solution heat exchanger, cold side-entrance connects absorber by pipeline, and cold side outlet port is connected to couple in the third level the cold side-entrance of phase-change heat-exchanger by pipeline, and hot side-entrance connects the concentrated solution outlet of first order flash separation tank bottom by pipeline, hot side outlet is connected with absorber import
The board-like interior coupling phase-change heat-exchanger of the first order, cold side-entrance is connected with flash separation tank bottom, second level solution line, connecting line series solution circulating pump, and cold side outlet port connects first order flash separation tank by pipeline, hot side-entrance connects the compressed vapour outlet of Mechanical Vapor Compression by pipeline
The board-like interior coupling phase-change heat-exchanger in the second level, hot side-entrance is connected with the top indirect steam outlet of first order flash separation tank by pipeline, the hot side-entrance of hot side outlet and the first water as refrigerant cooler connects, cold side-entrance is connected by pipeline with the outlet of third level flash separation tank bottom concentrated solution, connecting line is connected a solution circulation pump, cold side outlet port connects second level flash separation tank by pipeline
The board-like interior coupling phase-change heat-exchanger of the third level, hot side-entrance is connected with the top indirect steam outlet of second level flash separation tank by pipeline, the hot side-entrance of hot side outlet and the second water as refrigerant cooler connects, cold side-entrance is connected with the weak solution outlet conduit of solution heat exchanger, cold side outlet port connects third level flash separation tank by pipeline
The board-like interior coupling phase-change heat-exchanger of the fourth stage, hot side-entrance is connected with the top indirect steam outlet of third level flash separation tank by pipeline, the hot side-entrance of hot side outlet and the 3rd water as refrigerant cooler connects, cold side-entrance is connected by pipeline with the hot side outlet of coupling phase-change heat-exchanger in the first order, series connection condensate water circulatory pump in pipeline, cold side outlet port connects fourth stage flash separation tank by pipeline
The fourth stage steams knockout drum upper outlet and is connected with the import of steam mechanical compressor, there are two imports at middle part, the cold side outlet port of one interior coupling phase-change heat-exchanger board-like with the fourth stage is connected, another is connected with the outlet of vapour-liquid accumulation of energy phase transformation device, lower part outlet interior couple phase-change heat-exchanger cold side-entrance pipeline board-like with the fourth stage is connected
Mechanical vapor-compression pump, has inlet and outlet, and its import is connected by pipeline with the vapor phase exit of flash separator, and the hot side-entrance exporting interior coupling phase-change heat-exchanger board-like with the first order is connected by pipeline,
Three water as refrigerant coolers, hot side outlet is connected with the import of low pressure evaporator, and cold side-entrance is connected with the coolant outlet of low-pressure absorber, and cold side outlet port is connected with the thermal source input port of vapor compression heat pump,
Vapor compression heat pump thermal source import exports with the cold side water of water as refrigerant cooler and low-pressure absorber coolant outlet is connected, heat source water outlet is connected with the cooling water inlet of low-pressure absorber DX, high-temperature water delivery outlet is connected with the thermal source import of phase-changing energy-storing device, high-temperature water import is connected with the hot side outlet of vapour-liquid accumulation of energy phase transformation device
The upper outlet of phase-changing energy-storing device is connected with fourth stage flash separation tank import, high-temperature-hot-water input and delivery outlet are connected with the high-temperature water export and import mouth of pipe of vapor compression heat pump respectively, there is the import jet chimney UNICOM raw with externally input of the raw steam of a thermal source side, also have a moisturizing import to connect with outside water pipe, in device, be also configured with plate-type evaporator and forced circulation pump.
2. lithium bromide steam compressing air conditioner machine as claimed in claim 1, it is characterised in that described mechanical vapor-compression pumping receives the hot side of the input board-like interior coupling phase-change heat-exchanger of the first order after low-temp recovery steam boosting heats up.
3. lithium bromide steam compressing air conditioner machine as claimed in claim 1, it is characterised in that described mechanical vapor-compression pump is single-stage or multistage blower fan, compressor pump, and version is roots-type, centrifugal, reciprocating, screw.
4. lithium bromide steam compressing air conditioner machine as claimed in claim 1, it is characterised in that described board-like interior coupling phase-change heat-exchanger is plate type heat exchanger, plate-type evaporator, plate-type condenser, shell-and-tube heat exchanger.
5. lithium bromide steam compressing air conditioner machine as claimed in claim 1, it is characterized in that described water as refrigerant cooler is plank frame, the water as refrigerant chilling temperature needed for the board-like interior coupling phase-change heat-exchanger of corresponding each position realizes controlling by the PLC automatic control components and parts configured.
6. a double; two steam compression system absorption type refrigerating unit, it is characterised in that including:
Solution heat exchanger, cold side-entrance connects absorber by pipeline, and cold side outlet port is connected to couple in the third level the cold side-entrance of phase-change heat-exchanger by pipeline, and hot side-entrance connects the concentrated solution outlet of first order flash separation tank bottom by pipeline, hot side outlet is connected with absorber import
The board-like interior coupling phase-change heat-exchanger of the first order, cold side-entrance is connected with flash separation tank bottom, second level solution line, connecting line series solution circulating pump, and cold side outlet port connects first order flash separation tank by pipeline, hot side-entrance connects the compressed vapour outlet of Mechanical Vapor Compression by pipeline
The board-like interior coupling phase-change heat-exchanger in the second level, hot side-entrance is connected with the top indirect steam outlet of first order flash separation tank by pipeline, the hot side-entrance of hot side outlet and the first water as refrigerant cooler connects, cold side-entrance is connected by pipeline with the outlet of third level flash separation tank bottom concentrated solution, connecting line is connected a solution circulation pump, cold side outlet port connects second level flash separation tank by pipeline
The board-like interior coupling phase-change heat-exchanger of the third level, hot side-entrance is connected with the top indirect steam outlet of second level flash separation tank by pipeline, the hot side-entrance of hot side outlet and the second water as refrigerant cooler connects, cold side-entrance is connected with the weak solution outlet conduit of solution heat exchanger, cold side outlet port connects third level flash separation tank by pipeline
The board-like interior coupling phase-change heat-exchanger of the fourth stage, hot side-entrance is connected with the top indirect steam outlet of third level flash separation tank by pipeline, the hot side-entrance of hot side outlet and the 3rd water as refrigerant cooler connects, cold side-entrance is connected by pipeline with the hot side outlet of coupling phase-change heat-exchanger in the first order, series connection condensate water circulatory pump in pipeline, cold side outlet port connects fourth stage flash separation tank by pipeline
The fourth stage steams knockout drum upper outlet and is connected with the import of steam mechanical compressor, there are two imports at middle part, the cold side outlet port of one interior coupling phase-change heat-exchanger board-like with the fourth stage is connected, another is connected with the outlet of vapour-liquid accumulation of energy phase transformation device, lower part outlet interior couple phase-change heat-exchanger cold side-entrance pipeline board-like with the fourth stage is connected
Mechanical vapor-compression pump, has inlet and outlet, and its import is connected by pipeline with the vapor phase exit of flash separator, and the hot side-entrance exporting interior coupling phase-change heat-exchanger board-like with the first order is connected by pipeline,
Three water as refrigerant coolers, hot side outlet is connected with the import of low pressure evaporator, and cold side-entrance is connected with the coolant outlet of low-pressure absorber, and cold side outlet port is connected with the thermal source input port of vapor compression heat pump,
Vapor compression heat pump thermal source import exports with the cold side water of water as refrigerant cooler and low-pressure absorber coolant outlet is connected, heat source water outlet is connected with the cooling water inlet of low-pressure absorber DX, high-temperature water delivery outlet is connected with the thermal source import of phase-changing energy-storing device, high-temperature water import is connected with the hot side outlet of vapour-liquid accumulation of energy phase transformation device
The upper outlet of phase-changing energy-storing device is connected with fourth stage flash separation tank import, high-temperature-hot-water input and delivery outlet are connected with the high-temperature water export and import mouth of pipe of vapor compression heat pump respectively, there is the import jet chimney UNICOM raw with externally input of the raw steam of a thermal source side, also have a moisturizing import to connect with outside water pipe, in device, be also configured with plate-type evaporator and forced circulation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016397.8U CN205300024U (en) | 2016-01-08 | 2016-01-08 | Lithium bromide vapor compression formula air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016397.8U CN205300024U (en) | 2016-01-08 | 2016-01-08 | Lithium bromide vapor compression formula air conditioner |
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| Publication Number | Publication Date |
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| CN205300024U true CN205300024U (en) | 2016-06-08 |
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|---|---|---|---|
| CN201620016397.8U Expired - Fee Related CN205300024U (en) | 2016-01-08 | 2016-01-08 | Lithium bromide vapor compression formula air conditioner |
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| Country | Link |
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| CN (1) | CN205300024U (en) |
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2016
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