CN101240953A - Ammonia compression -absorption composite heat pump circulating device and circulate method - Google Patents
Ammonia compression -absorption composite heat pump circulating device and circulate method Download PDFInfo
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- CN101240953A CN101240953A CNA200710190221XA CN200710190221A CN101240953A CN 101240953 A CN101240953 A CN 101240953A CN A200710190221X A CNA200710190221X A CN A200710190221XA CN 200710190221 A CN200710190221 A CN 200710190221A CN 101240953 A CN101240953 A CN 101240953A
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Abstract
The present invention provides an ammonia compression-absorption composite heatpump cycle device and a heatpump cycle system whic cycle method uses ammonia as working substance, utilizes low grade heat and a heatpump cycle method, the system includes an ammonia compressor (1), an absorber (2), a solution heat exchanging device (5), a throttle Valve (3), a solution pump (6), a desorption device (4); an ammonia dilute solution pipe is elicited by the desorption device to exchange heat with concentrated solution of the desorption device outlet after boosting dilute solution by a solution pump, ammonia steam drained by the compressor is absorbed in the absorber after rising the temperature of dilute solution, concentrated solution absorbs energy of environment water in the desorption device, dilute solution absorbs energy emitted by ammonia steam in the absorber to supply to user, completes compression-absorption composite heatpump cycle.
Description
Technical field
The present invention relates to the round-robin method that a kind of ammonia compression-absorption composite heat pump circulates and adopts this system.In this heat pump heat release and endothermic process, cycle fluid is the absorption and the desorption process of binary medium, under identical heat supply and endothermic temperature condition, regulate the concentration of absorption liquid, can change the pressure at expulsion of compressor, reduce the compressor pressure ratio, heat absorption is the alternating temperature process of the absorption and desorption of binary working medium with exothermic process in addition, the circulatory system and the heat transfer temperature difference in the external world are reduced, and irreversible loss reduces.
Background technology
Steam compression heat pump is industrial a kind of heat pump pattern commonly used, it is to utilize certain unit working medium to absorb low-grade (as industrial exhaust heat, solar energy, ambient water etc.) heat of vaporization in low pressure evaporator, then by behind the compressor adherence pressure in condenser the condensation heat release realize heat pump cycle.The pressure at expulsion of compressor improves along with the raising of heat supply temperature, and too high because of the heat supply temperature requirement often, the pressure ratio of compressor does not satisfy the requirement of technology, has to abandon the steam compression heat pump Scheme Selection.In addition, unit working medium heat release and endothermic process in condenser and evaporimeter are constant temperature process, and the steam compression heat pump system is bigger with extraneous irreversible heat transfer temperature difference, and systemic circulation efficient is subjected to influence to a certain degree.
Ammonia solution is a natural medium, very friendly to environment, because of the adiabatic exponent of ammonia bigger, the steam compression heat pump pressure at expulsion and the delivery temperature that with ammonia are medium are all than higher, there is the too high problem of pressure at expulsion in this in the ammonia steam compression heat pump system of higher heat supply temperature, reduced the security of system.If the generation of absorption cyclic process and the process and the compression circulation of absorption are coupled, realize that the ammonia compression-absorption composite heat pump circulatory system can not only address this problem well, absorb the irreversible heat transfer temperature loss that can reduce the system and the external world with the alternating temperature characteristic of desorption process simultaneously, improve system's heating performance.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of ammonia compression-absorption composite heat pump circulatory system and adopt this systemic circulation method, this circulation can realize the heat pump cycle under heat release of working medium alternating temperature and the alternating temperature heat absorption condition, reaches the purpose that reduces compressor pressure ratios and improve heat pump heat supply temperature.
Technical scheme: ammonia compression-sorption type heat pump EGR of the present invention, comprise compressor, absorber, choke valve, desorption device, solution heat exchanger and solution pump, it is characterized in that, the 4th ammonia output of desorption device links to each other with the first ammonia input of compressor by the ammonia pipeline, the first ammonia output of compressor links to each other with the second ammonia input of absorber by pipeline, the second liquor ammoniae fortis output of absorber links to each other with the 5th liquor ammoniae fortis input of solution heat exchanger by the liquor ammoniae fortis pipeline, the 5th liquor ammoniae fortis output of solution heat exchanger links to each other with the 4th liquor ammoniae fortis input of desorption device by the ammonia choke valve, the 4th liquor ammoniae dilutus output of desorption device links to each other with the 5th liquor ammoniae dilutus input of solution heat exchanger by solution pump, and the 5th liquor ammoniae dilutus output of solution heat exchanger links to each other with the second liquor ammoniae dilutus input of absorber; The water of ambient condition is introduced by the water inlet of desorption device, draws from the water out of desorption device; The heat supply backwater is introduced by the hot water inlet of absorber, draws from the heat supply water out of absorber.
The round-robin method of ammonia compression-sorption type heat pump EGR is, the dilute ammonia solution that goes out desorption device passes through and enters solution heat exchanger after solution pump boosts, behind the concentrated ammonia solution heat temperature raising that in solution heat exchanger, is come out from absorber, enter absorber, in absorber, absorb the ammonia steam that compressor is discharged; Absorber outlet concentrated ammonia solution is after solution heat exchanger, choke valve carry out heat exchange and throttling process, enter desorption device, the heat of absorbing environmental state water in desorption device, separate sucking-off ammonia steam, produce weak solution, ammonia steam enters the ammonia compressor compression, and weak solution is pressurizeed by solution pump again, enter absorber through solution heat exchanger, constitute ammonia compression-absorption composite heat pump heat supply circulation thus.The HTHP ammonia steam that compressor is discharged is absorbed by dilute ammonia solution in absorber and emits heat, rather than condensation, and absorption process is the alternating temperature process.Separate sucking-off ammonia steam through the heat of concentrated ammonia solution absorbing environmental state water in desorption device of choke valve, rather than evaporation, desorption process is the alternating temperature process.
Beneficial effect: owing to the heat release and the endothermic process employing ammoniacal liquor binary working medium of the compound heat pump heat distribution system of ammonia compression-absorption, rather than the condensation of single working medium and evaporation, therefore the pressure at expulsion (maximum pressure of system) of compressor not only depends on working medium condensation temperature (heat supply temperature), can change the maximum pressure of system by the concentration that changes working medium, thereby overcome the drawback of ammonia steam compression heat pump heating system hypertonia.In addition, the heat release of working medium and endothermic process all are the alternating temperature processes, have therefore reduced the irreversible loss that heat release and endothermic process produce because of heat transfer temperature difference.
Description of drawings
The present invention will be further described below in conjunction with drawings and embodiments.
Fig. 1 is the schematic diagram of the ammonia compression-absorption composite heat pump circulatory system.
Wherein have: ammonia compressor 1, absorber 2, choke valve 3, desorption device 4, solution heat exchanger 5, solution pump 6; The first ammonia input 1a, the first ammonia output 1b, the second ammonia input 2a, the second liquor ammoniae fortis output 2b, the second liquor ammoniae dilutus input 2c, hot water inlet 2d, heat supply water out 2e, the 4th liquor ammoniae fortis input 4a, the 4th ammonia output 4b, water inlet 4c, water out 4d, the 4th liquor ammoniae dilutus output 4e, the 5th liquor ammoniae fortis input 5a, the 5th liquor ammoniae fortis output 5b, the 5th liquor ammoniae dilutus output 5c, the 5th liquor ammoniae dilutus input 5d.
The specific embodiment
The heat supply round-robin method of the ammonia compression-absorption composite heat pump circulatory system of the present invention is: the dilute ammonia solution that goes out desorption device passes through and enters solution heat exchanger after solution pump boosts, the concentrated ammonia solution heat temperature raising that is come out from absorber in solution heat exchanger enters absorber again and absorbs the ammonia steam that compressor is discharged, absorber outlet concentrated ammonia solution is through solution heat exchanger, choke valve carries out after heat exchange and the throttling process respectively, enter desorption device, the heat of concentrated solution absorbing environmental water in desorption device, weak solution absorbs the ammonia steam institute liberated heat heat supply user use that compressor is discharged in absorber, finish compression absorption composite heat pump heat supply circulation.
As shown in Figure 1: the 4th ammonia output 4b of desorption device 4 links to each other with the first ammonia input 1a of compressor 1 by the ammonia pipeline, the-ammonia output 1b of compressor 1 links to each other with the second ammonia input 2a of absorber 2 by pipeline, the second liquor ammoniae fortis output 2b of absorber 2 links to each other with the 5th liquor ammoniae fortis input 5a of solution heat exchanger 5 by the liquor ammoniae fortis pipeline, the 5th liquor ammoniae fortis output 5b of solution heat exchanger 5 links to each other with the 4th liquor ammoniae fortis input 4a of desorption device by ammonia choke valve 3, the 4th liquor ammoniae dilutus output 4e of desorption device 2 links to each other with the 5th liquor ammoniae dilutus input 5d of solution heat exchanger 5 by solution pump 6, and the 5th liquor ammoniae dilutus output 5c of solution heat exchanger 5 links to each other with the second liquor ammoniae dilutus input 2c of absorber 2; The water of ambient condition is introduced by the water inlet 4c of desorption device 4, draws from the water out 4d of desorption device 4; The heat supply backwater is introduced by the hot water inlet 2d of absorber 2, draws from the heat supply water out 2e of absorber 2.
This ammonia compression-absorption composite heat pump circulatory system is provided with solution heat exchanger and solution pump, so that ammonia spirit can periodic duty between absorber and desorption device, absorber in the circulatory system is corresponding with the condenser and the evaporimeter of traditional ammonia vapor compression heat pump circulation respectively with desorption device, and the absorption and desorption process that makes traditional constant temperature condensation and evaporation process become alternating temperature, thereby be reduced in the irreversibility in the diabatic process, reduce the heat transfer loss.
Claims (4)
1, a kind of ammonia compression-sorption type heat pump EGR, comprise compressor (1), absorber (2), choke valve (3), desorption device (4), solution heat exchanger (5) and solution pump (6), it is characterized in that, the 4th ammonia output (4b) of desorption device (4) links to each other with the first ammonia input (1a) of compressor (1) by the ammonia pipeline, the first ammonia output (1b) of compressor (1) links to each other with the second ammonia input (2a) of absorber (2) by pipeline, the second liquor ammoniae fortis output (2b) of absorber (2) links to each other with the 5th liquor ammoniae fortis input (5a) of solution heat exchanger (5) by the liquor ammoniae fortis pipeline, the 5th liquor ammoniae fortis output (5b) of solution heat exchanger (5) links to each other with the 4th liquor ammoniae fortis input (4a) of desorption device by ammonia choke valve (3), the 4th liquor ammoniae dilutus output (4e) of desorption device (2) links to each other with the 5th liquor ammoniae dilutus input (5d) of solution heat exchanger (5) by solution pump (6), and the 5th liquor ammoniae dilutus output (5c) of solution heat exchanger (5) links to each other with the second liquor ammoniae dilutus input (2c) of absorber (2); The water of ambient condition is introduced by the water inlet (4c) of desorption device (4), draws from the water out (4d) of desorption device (4); The heat supply backwater is introduced by the hot water inlet (2d) of absorber (2), draws from the heat supply water out (2e) of absorber (2).
2, a kind of round-robin method of ammonia compression-sorption type heat pump EGR as claimed in claim 1, it is characterized in that, the dilute ammonia solution that goes out desorption device (4) passes through and enters solution heat exchanger (5) after solution pump (6) boosts, in solution heat exchanger (5) by behind the concentrated ammonia solution heat temperature raising that comes out from absorber (2), enter absorber (2), in absorber (2), absorb the ammonia steam that compressor (1) is discharged; Absorber (2) outlet concentrated ammonia solution is after solution heat exchanger (5), choke valve (3) carry out heat exchange and throttling process, enter desorption device (4), heat at desorption device (4) lining absorbing environmental state water, separate sucking-off ammonia steam, produce weak solution, ammonia steam enters ammonia compressor (1) compression, and weak solution is pressurizeed by solution pump (6) again, enter absorber (2) through solution heat exchanger (5), constitute ammonia compression-absorption composite heat pump heat supply circulation thus.
3, the round-robin method of the ammonia compression-sorption type heat pump circulatory system as claimed in claim 2, it is characterized in that HTHP ammonia steam that compressor discharges is absorbed by dilute ammonia solution and emits heat in absorber (2), rather than condensation, absorption process is the alternating temperature process.
4, the round-robin method of the ammonia compression-sorption type heat pump circulatory system as claimed in claim 2, it is characterized in that through the heat of concentrated ammonia solution absorbing environmental state water in desorption device (4) of choke valve (3) and separate sucking-off ammonia steam, rather than evaporation, desorption process is the alternating temperature process.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200710190221XA CN101240953A (en) | 2007-11-20 | 2007-11-20 | Ammonia compression -absorption composite heat pump circulating device and circulate method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200710190221XA CN101240953A (en) | 2007-11-20 | 2007-11-20 | Ammonia compression -absorption composite heat pump circulating device and circulate method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292306A (en) * | 2013-06-30 | 2013-09-11 | 苏州市牛勿耳关电器科技有限公司 | Intelligent city heating supply system |
| CN109260900A (en) * | 2018-11-14 | 2019-01-25 | 李洁 | A kind of ammonia-contaminated gas circulating collection device |
| CN111825145A (en) * | 2020-08-07 | 2020-10-27 | 吴嘉 | Method and device for treating ammonia nitrogen wastewater and recovering ammonia |
| CN111981727A (en) * | 2020-08-06 | 2020-11-24 | 浙大宁波理工学院 | Method for producing heat in an absorber from a solution containing HFO-1336mzz (Z) |
| CN112344600A (en) * | 2020-11-25 | 2021-02-09 | 华北电力大学 | Energy potential super heat pump and operation method thereof |
| CN112361659A (en) * | 2020-11-26 | 2021-02-12 | 华北电力大学 | Super heat pump of energy potential coupling |
| CN116608609A (en) * | 2023-05-04 | 2023-08-18 | 浙江自贸区隆玥能源环境有限公司 | Compression absorption heat pump and application thereof |
-
2007
- 2007-11-20 CN CNA200710190221XA patent/CN101240953A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292306A (en) * | 2013-06-30 | 2013-09-11 | 苏州市牛勿耳关电器科技有限公司 | Intelligent city heating supply system |
| CN109260900A (en) * | 2018-11-14 | 2019-01-25 | 李洁 | A kind of ammonia-contaminated gas circulating collection device |
| CN109260900B (en) * | 2018-11-14 | 2021-04-27 | 云南祥丰石化有限公司 | Ammonia-containing waste gas circulating and collecting device |
| CN111981727A (en) * | 2020-08-06 | 2020-11-24 | 浙大宁波理工学院 | Method for producing heat in an absorber from a solution containing HFO-1336mzz (Z) |
| CN111825145A (en) * | 2020-08-07 | 2020-10-27 | 吴嘉 | Method and device for treating ammonia nitrogen wastewater and recovering ammonia |
| CN112344600A (en) * | 2020-11-25 | 2021-02-09 | 华北电力大学 | Energy potential super heat pump and operation method thereof |
| CN112361659A (en) * | 2020-11-26 | 2021-02-12 | 华北电力大学 | Super heat pump of energy potential coupling |
| CN116608609A (en) * | 2023-05-04 | 2023-08-18 | 浙江自贸区隆玥能源环境有限公司 | Compression absorption heat pump and application thereof |
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