CN205351848U - Heat pump is united to lithium bromide absorption formula - Google Patents
Heat pump is united to lithium bromide absorption formula Download PDFInfo
- Publication number
- CN205351848U CN205351848U CN201521085286.4U CN201521085286U CN205351848U CN 205351848 U CN205351848 U CN 205351848U CN 201521085286 U CN201521085286 U CN 201521085286U CN 205351848 U CN205351848 U CN 205351848U
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- heat pump
- heat
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- generator
- absorber
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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
Abstract
The utility model relates to a heat pump is united to lithium bromide absorption formula, including evaporimeter, absorber, condenser, heat exchanger, cooling tower and one or two generators, in a heat pump set, only need through switching valve, just can realize that the lithium bromide absorbs the operation function of one type of heat pump of formula or the class II heat pump of lithium bromide absorption formula, and then improve system efficiency, reduce the running cost. This combination heat pump evaporator, absorber, condenser, heat exchanger share when one type of heat pump mode of operation or class II heat pump mode. The position of arranging of generator, evaporimeter, absorber, condenser, heat exchanger can set up wantonly. In operation during class II heat pump, used heat water can be established ties or is parallelly connected through generator and evaporimeter, when the series connection mode, can be from the generator to the evaporimeter, and also can be from the evaporimeter to the generator.
Description
Technical field
This utility model relates to a kind of associating heat-pump apparatus device being realized suction-type lithium bromide one class heat pump or suction-type lithium bromide two class operation of heat pump by switch valve.
Background technology
During lithium bromide absorption-type machine unit refrigerating operaton, the cooling water leaving water temperature of absorber and condenser is usually above the leaving water temperature 30～50 DEG C of vaporizer, absorption heat pump is exactly this principle utilizing lithium bromide absorbing type refrigeration, utilizes the cooling heat heat pump assembly for heat supply of Absorption Cooling System.Conventional bromination lithium-absorbing formula heat pump is divided into a class heat pump and two class heat pumps.One class heat pump is to adopt high-grade heat-driven, adopts the anti-operation of refrigeration completely, absorber and condenser heat supply simultaneously；Two class heat pumps are not owing to adopting high-grade energy to drive, but with low-grade waste heat generator, owing to occurrence temperature is low, condensation temperature must be reduced, by the cooling water condensation of low temperature, absorption installation could be maintained and run, so, two class heat pumps sacrifice the heat supply of condenser, condenser low-temperature cooling water cooling condensation, only absorber heat supply.
Suction-type lithium bromide one class heat pump is equivalent to the inverted running of lithium bromide absorption refrigerating set, need high-grade heat-driven, such as natural gas, steam, high-temperature-hot-water etc., lithium bromide weak solution in high-grade energy heats generator, isolate refrigerant vapour, refrigerant vapour enters condenser, cooled water-cooled is congealed into liquid, and discharge steam condensation heat to cooling water, owing to condenser pressure is higher than evaporating pressure, liquid refrigerant is the saturated water as refrigerant of low pressure by throttling arrangement decompression, enter vaporizer, after absorbing the heat of spent hot water, explosive evaporation is low-pressure steam, low-pressure steam enters absorber, absorbed by the concentrated solution after concentration from generator, and discharge absorption heat to the cooling water in absorber, after concentrated solution absorbs water vapour, become weak solution, by solution pump supercharging, namely generator pressure is higher than absorber pressure, in heat exchanger with concentrated solution heat exchange after, enter generator, maintain the persistent loop of heat pump.Wherein, the heat that system discharges in absorber and condenser, it is the heating load of heat pump.
One class heat pump has following characteristics:
Need high-grade heat-driven；
The hot water temperature of output is higher than temperature of waste heat, lower than driving heat source temperature；
Absorber and condenser heat supply simultaneously, it is possible to parallel connection can also be connected heat supply；
Quantity of heat given up is more than the heat of driving heat source, heat pump efficiency COP=1.7～1.8, double-effect heat pump COP=2.2～2.5, but double-effect heat pump heat supply temperature≤50 DEG C；
The pressure of evaporation and absorber is lower than occurring and the pressure of condensation；
The hot water temperature of output is lower than≤100 DEG C；
>=the used heat of the lower temperature of 10 DEG C can be recycled.
Suction-type lithium bromide two class heat pump does not need high-grade driven by energy, directly can be driven long journey by the spent hot water of middle grade, spent hot water enters generator, lithium bromide weak solution in heating generator, isolate refrigerant vapour, refrigerant vapour enters condenser, liquid is become by the cooling water condensation of low temperature, liquid refrigerant is by entering the vaporizer that relative pressure is higher after cryogenic fluid pump supercharging, after vaporizer absorbs the heat of spent hot water, it is evaporated to high steam, high steam enters absorber, absorbed by the concentrated solution after concentration from generator, and discharge absorption heat to the cooling water in absorber, after concentrated solution absorbs water vapour, become weak solution, owing to absorber pressure is higher than generator pressure, weak solution reduces pressure through throttling arrangement, and with concentrated solution heat exchange after, enter the generator of relatively low pressure, maintain the persistent loop of heat pump.Wherein, the heat that system discharges to absorber, it is the heating load of two class heat pumps.
Two class heat pumps have following characteristics:
Not needing high-grade heat-driven, heat pump is driven by the waste heat source of medium grade, and absorbs heat from waste heat source；
Waste heat source can serial or parallel connection respectively enter generator and vaporizer；
The hot water temperature of output is higher than temperature of waste heat；
Only absorber heat supply；
Quantity of heat given up is less than the heat of waste heat source, with the heat pump efficiency COP < 0.5 of waste heat source heat Calculation.
Evaporation and the pressure absorbed are higher than occurring and the pressure of condensation；
High-temperature-hot-water or steam can be exported, heat source temperature≤150 DEG C of output；
Needing the cooling water of low temperature, and temperature is more low, efficiency is more high, and the hot water temperature of output is more high, it is necessary to temperature of waste heat more low, it usually needs the cooling water of 10～20 DEG C；
The used heat of recoverable >=60 DEG C, cooling water temperature is lower, and available temperature of waste heat can be lower.
Due to a class and the hot pump characteristics of two classes, for recycling the application scenario of medium grade used heat, it is possible to select two class heat pumps, and do not consume high-grade heat energy, but owing to cooling water temperature in summer is high, when temperature of waste heat is relatively low, two class heat pumps cannot run summer.For the commercial Application project that need whole year operation, medium grade Waste Heat Recovery utilizes, in order to improve system effectiveness, reduce operating cost, then need to be respectively provided with a class and two class heat pumps, summer operation one class heat pump, winter operation two class heat pump, add equipment investment, add machine room area occupied, increase operational management cost.
Utility model content
This utility model provides a kind of suction-type lithium bromide associating heat pump for the above-mentioned problems in the prior art, and it is capable of the annual recycling of medium grade used heat, and a class operation of heat pump, winter can be adopted summer can to adopt two class operation of heat pump.
For this, source pump of the present utility model includes vaporizer, absorber, condenser, cooling tower, heat exchanger, function switch valve and one or two generators, wherein, vaporizer, absorber, condenser, heat exchanger, share when running a class heat pump mode or two class heat pump mode；Generator, vaporizer, absorber, condenser, heat exchanger position can arbitrarily arrange.Source pump has only to, by function switch valve, can be achieved with suction-type lithium bromide one class heat pump or the operation function of suction-type lithium bromide two class heat pump.
When a class heat pump operationally, between generator and condenser, connected by inner passage or pipeline, between condenser and vaporizer, being connected by throttling arrangement and pipeline, the weak solution between generator and absorber is connected by circulating pump and pipeline, concentrated solution is connected by circulating pump and pipeline.
When two class heat pumps operationally, spent hot water can serial or parallel connection by generator and vaporizer, when series system pattern, it is possible to from generator to vaporizer, it is also possible to from vaporizer to generator.Being connected by inner passage or pipeline, between condenser and vaporizer, connected by circulating pump and pipeline, the concentrated solution between generator and absorber is connected by circulating pump and pipeline, weak solution is connected by throttling arrangement and pipeline.
Adopting above-mentioned source pump structure, the passage between passage and liquid barrier, generator and condenser and liquid barrier between vaporizer and absorber can be levels, it is also possible to be vertical.
During due to Waste Heat Recovery, as long as the service condition license of project, two class operation of heat pump costs are minimum, can switch to two class heat pump mode at any time, when the conditions are not met, then switch to a class heat pump mode, ensure the heat demand of project to greatest extent, reduce operating cost to greatest extent.
Technical economic analysis is as follows:
Such as, field joint stations, there is the crude separation waste water of substantial amounts of 62 DEG C, needing to convert to the hot water heating oil water mixture of 80 DEG C, there are natural gas, heating value of natural gas 36MJ/Nm3 in oil field, the heating load of every covering device is 2Mw, energy cost: 1 yuan/kwh of electricity price, 2.5 yuan/Nm3 of natural gas price.
Owing to two class operation of heat pump costs are minimum, it should preferential two class heat pumps of selecting, but, service condition according to this project, two class heat pumps need the cooling water of less than 15 DEG C, it is impossible to whole year operation, the whole year only can be run 6 months, does not consume natural gas, unit and cooling tower power consumption 13.3kw.
Two class operation of heat pump costs: 13.3*1=13.3 unit/h.
Ten thousand yuan/a of whole year operation cost: 13.3*24*365=11.65
If selecting a class heat pump, heating load is 2Mw, calculates according to heat pump COP=1.75, and natural gas consumption is 116Nm3/h, unit power consumption 4.9kw.
One class operation of heat pump cost: 116*2.5+4.9*1=294.9 unit/h.
Ten thousand yuan/a of whole year operation cost: 294.9*24*365=258.33.
The heating load of same 2Mw, the operating cost of a class heat pump is 22.17 times of two class heat pumps, and whole year operation cost increases by 246.68 ten thousand yuan.But, two class heat pumps can not whole year operation.If selecting associating heat pump, within annual 6 months, running a class heat pump, within 6 months, running two class heat pumps, then whole year operation cost is:
13.3*24*182+294.9*24*183=135.33 ten thousand yuan/a
Relatively the whole year saved operating cost 1,230,000 yuan by a class heat pump.Then just can reclaimer investment.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, this utility model being described in further detail, in each schematic diagram, the sequence number of accompanying drawing labelling is identical, and liquid barrier represents with < < < in the drawings.
Fig. 1 is the schematic diagram of known direct-burning type lithium bromide absorption type one class heat pump.
Fig. 2 is suction-type lithium bromide two class heat pump (spent hot water the is in parallel) schematic diagram of known hot water or steam type.
Fig. 3 is the schematic diagram of this utility model suction-type lithium bromide associating heat pump (left and right layout).
Detailed description of the invention
Fig. 1 and Fig. 2 show prior art suction-type lithium bromide one class and the two class heat pump operation principles that foregoing Background is previously mentioned.It is drive with high-grade energy natural gas in FIG, by hot water or steam drive, can also specifically heat the lithium bromide weak solution in a class generator 11, isolate refrigerant vapour and enter condenser 2, cooled water-cooled is congealed into liquid, and to cooling water release steam condensation heat；Owing to condenser pressure is higher than evaporating pressure, liquid refrigerant is the saturated water as refrigerant of low pressure by U-shaped throttling arrangement 61 decompression, enters vaporizer 3, and after absorbing the heat of spent hot water, explosive evaporation is low-pressure steam；Low-pressure steam enters absorber 4 through liquid barrier, absorbed by the concentrated solution after concentration from a class generator 11, and discharge absorption heat to the cooling water in absorber 4, after concentrated solution absorbs water vapour, become weak solution, after weak solution pump 71 supercharging, in heat exchanger 5 with concentrated solution heat exchange after, enter a class generator 11, maintain the persistent loop of heat pump.Directly entered two class generators 12 by spent hot water's parallel connection of middle grade in fig. 2, the lithium bromide weak solution in heating generator, it is also possible to enter by the method for series connection；Isolate refrigerant vapour equally and enter condenser 2, cooled water-cooled is congealed into liquid, liquid refrigerant is by entering the vaporizer 3 that relative pressure is higher after refrigerant pump 72 supercharging, after vaporizer 3 absorbs the heat of spent hot water, high steam enters absorber 4 through liquid barrier, absorbed by the concentrated solution after concentration from two class generators 12, and discharge absorption heat to the cooling water in absorber 4, after concentrated solution absorbs water vapour, become weak solution, weak solution reduces pressure through U-shaped throttling arrangement 61, in heat exchanger 5 with concentrated solution heat exchange after, enter two class generators 12 of relatively low pressure, maintain the persistent loop of heat pump.
Combine heat pump at this utility model suction-type lithium bromide to arrange around as shown in Figure 3, one end of the concentrated solution side of heat exchanger 5 is connected with the concentrated solution import of absorber 4, the other end is connected with the concentrated solution outlet of a class generator 11 by concentrated solution pump 74 and valve 909 or valve 908 is connected with the concentrated solution outlet of two class generators 12, one end of the weak solution side of heat exchanger 5 exports with the weak solution of absorber 4 and is connected, and the other end is connected with the dilute solution inlet of two class generators 12 by valve 910 and is connected with the dilute solution inlet of a class generator 11 by valve 911, weak solution pump 71.When unit runs according to an above-mentioned class heat pump mode, by switching hot-water heating system valve, closing 901,904,905, open 902,903, make hot water be connected in series through absorber 4 and condenser 2, obstructed supercooling tower 8, cooling water pump 73 does not run；Make spent hot water only by vaporizer 3, not by generator 12；By switching the valve of unit, close refrigerant pump 72, open 907, close 906, make the water as refrigerant that condenser 2 exports enter vaporizer 3 by U-shaped throttling arrangement 62；Open 911,908, close 910,909, make weak solution enter and constitute a class generator 11, do not enter composition two class generators 12；Open the steam valve 914 of class generator 11 a to condenser 2, close 913,912, make two class generators 12 disable.
Equally, when unit runs according to above-mentioned two class heat pump mode, Fig. 3, by switching hot-water heating system valve, closes 902,903, open 901,904,905, make hot water only by absorber 4, do not enter condenser 2, start cooling tower 8, start cooling water pump 73, make cooling water circulate at condenser；Open 912,913, make spent hot water simultaneously enter vaporizer 3 and two class generators 12, it is possible to serial or parallel connection, this figure is paralleling model；By switching the valve of unit, make the water as refrigerant that condenser 2 exports by entering vaporizer 3 after refrigerant pump 72 supercharging, close 906 to close U-shaped throttling arrangement 62；Open 909,910, close 908,911, make weak solution enter and constitute two class generators 12, do not enter composition one class generator 11；Close the steam valve 914 of 11 to condenser 2.
Certainly, this utility model suction-type lithium bromide associating heat pump can also adopt the frame mode arranged up and down, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within right of the present utility model.
Claims (4)
1. a suction-type lithium bromide associating heat pump, it is characterized in that: described source pump is made up of vaporizer, absorber, condenser, heat exchanger, cooling tower, function switch valve and one or two generators, wherein, vaporizer, absorber, condenser, heat exchanger, share when running a class heat pump mode or two class heat pump mode；Generator, vaporizer, absorber, condenser, heat exchanger position can arbitrarily arrange.
2. suction-type lithium bromide associating heat pump described in claim 1, it is characterized in that: operationally, spent hot water can pass through generator and vaporizer by serial or parallel connection to described two class heat pump mode, when series model, can from generator to vaporizer, it is also possible to from vaporizer to generator.
3. suction-type lithium bromide associating heat pump described in claim 1, it is characterised in that: the passage between passage and liquid barrier, generator and condenser and liquid barrier between described vaporizer and absorber can be levels, it is also possible to be vertical.
4. described in claim 1 suction-type lithium bromide associating heat pump, it is characterised in that: described function switch valve can be manual, it is also possible to is electronic, wherein hot water, spent hot water, cooling water switch valve can random group install, it is also possible to user locate install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085286.4U CN205351848U (en) | 2015-12-24 | 2015-12-24 | Heat pump is united to lithium bromide absorption formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085286.4U CN205351848U (en) | 2015-12-24 | 2015-12-24 | Heat pump is united to lithium bromide absorption formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205351848U true CN205351848U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521085286.4U Withdrawn - After Issue CN205351848U (en) | 2015-12-24 | 2015-12-24 | Heat pump is united to lithium bromide absorption formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205351848U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571194A (en) * | 2015-12-24 | 2016-05-11 | 希望深蓝空调制造有限公司 | Lithium bromide absorption type combined heat pump |
| CN106403374A (en) * | 2016-12-12 | 2017-02-15 | 远大空调有限公司 | Magnetic suspension water cooling unit and lithium bromide cold and heat pump unit double running system and method |
-
2015
- 2015-12-24 CN CN201521085286.4U patent/CN205351848U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571194A (en) * | 2015-12-24 | 2016-05-11 | 希望深蓝空调制造有限公司 | Lithium bromide absorption type combined heat pump |
| CN105571194B (en) * | 2015-12-24 | 2018-05-08 | 希望深蓝空调制造有限公司 | Suction-type lithium bromide combines heat pump |
| CN106403374A (en) * | 2016-12-12 | 2017-02-15 | 远大空调有限公司 | Magnetic suspension water cooling unit and lithium bromide cold and heat pump unit double running system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20180508 |