CN103574978A - Fourth type heat pump cycle - Google Patents
Fourth type heat pump cycle Download PDFInfo
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- CN103574978A CN103574978A CN201310514873.XA CN201310514873A CN103574978A CN 103574978 A CN103574978 A CN 103574978A CN 201310514873 A CN201310514873 A CN 201310514873A CN 103574978 A CN103574978 A CN 103574978A
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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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
Abstract
The invention relates to fourth type heat pump cycle, which consists of a high-temperature absorber, a first condenser, a first throttling valve, a second condenser, a refrigerant liquid pump, an evaporator, an absorber, a first solution pump, a first solution heat exchanger, a second solution heat exchanger, a third solution heat exchanger, a second solution pump, an ejector and a plurality of generators. Jet type heat pump cycle and two types of absorption heat pump cycle are organically combined, so high-grade driving steam temperature difference and pressure difference are effectively utilized, high heat supply temperature and high-efficiency heat energy utilization ratio are obtained, high-grade driving steam can be efficiently utilized, smaller compression ratio and higher ejection coefficient are achieved, and the fourth type heat pump cycle is excellent in energy-saving efficiency as compared with the traditional heat supply method.
Description
Technical field
The invention belongs to Low-temperature heat utilization techniques field.
Background technology
Absorption heat pump be take heat energy as power, adopts contrary Carnot cycle to realize heat and is transmitted to high temperature by low temperature, is particularly suitable for the occasion of a large amount of used heat, and the condensed state of used heat can be that gaseous state can be also liquid.For take lithium bromide water solution as the right absorption heat pump of working medium, physical property due to working medium itself, for guaranteeing source pump safety, stable operation, the temperature of solution and concentration are had to certain requirement, for making absorption heat pump and reach best operating efficiency at rational temperature, concentration section operation, people have developed multiple-effect and multi-stage first kind absorption heat pump: under identical waste heat supply temperature, after absorption type heat pump efficiency number increases, operating efficiency can improve, but to driving hot requirement to improve, the upper limit of heat supply temperature can decline; After progression increases, to driving hot requirement to reduce, the heat supply temperature upper limit can improve, but operating efficiency can decline, economy variation, so both advantages can not be taken into account.
In the cogeneration project of carrying out in some power plant, majority is to adopt the mode of multiple heat pump combination to realize the heating to heating water, the heating water temperature that highest heat pump ends does not often reach the temperature needing, be all now to adopt the direct-fired method of high-quality steam to complete follow-up heating needs, this link is obviously not energy-conservation.
Second-kind absorption-type heat pump is that the temperature difference of take between residual heat resources and cold environment is driving force, realize heat energy by low temperature the energy saver to high temperature transformation, being rich in low temperature exhaust heat and obtaining occasion compared with low ambient temperature, there is good energy-saving effect.
The operation principle of steam jet heat pump is that the energy difference of take before and after steam pressure-reducing is power, high steam produces high velocity air during by nozzle, at nozzle exit, produce low-pressure area, in this region by low-pressure steam inhalation device, high steam is compression and low pressure steam when expanding, by the abundant pressure of high steam, improve the grade of low-pressure steam, then by mixing chamber, well mix, mixed steam is again by the diffusion chamber recovered part pressure loss, meets the requirements of to supply with hot user after steam pressure and use.According to the parameter of high and low pressure steam, can carry out different structural designs to equipment, obtain the steam of various pressure ratings, meet different hot users' requirement.The low-pressure steam sucking by steam jet heat pump can be both the exhaust steam of emptying, also can be the flash steam that condensed water in high temperature produces, because the heat pump of the type can only recovered steam, liquid used heat for low temperature, as the heat containing in low-temperature water heating, cannot directly reclaim, greatly limit its application.
The advantage of comprehensive above-mentioned three kinds of heat pumps, the 4th class heat pump that the temperature difference and pressure reduction are fully utilized, by bringing into play to greatest extent the value of high-quality driving steam, has the highest energy-saving benefit.
Summary of the invention
The invention provides the 4th class heat pump cycle.
1. the 4th class heat pump cycle, by high temperature absorber, the first condenser, first throttle valve, the second condenser, cryogen liquid pump, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, the first generator, the second generator, the 3rd solution heat exchanger, the second solution pump and injector form, high temperature absorber has solution pipeline to be communicated with the first generator through the second solution heat exchanger, the first generator has solution pipeline to be communicated with the second generator through the first solution heat exchanger and the 3rd solution heat exchanger, the second generator has solution pipeline to be communicated with absorber through the second solution pump and the 3rd solution heat exchanger, absorber has solution pipeline through the first solution pump, the first solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, the first generator also has refrigerant vapour passage to be communicated with the first condenser, the second generator also has refrigerant vapour passage to be communicated with the second condenser, the first condenser also has cryogen liquid pipeline to be communicated with the second condenser through first throttle valve, the second condenser has cryogen liquid pipeline to be communicated with evaporimeter through cryogen liquid pump, the second condenser also has condensate line to be directly communicated with outside, evaporimeter also has refrigerant vapour passage to be communicated with absorber and injector injection entrance respectively, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, evaporimeter and the second generator medium pipeline that also has surplus heat is respectively communicated with outside, absorber, the first condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, the first generator drives thermal medium pipeline to be communicated with outside in addition, the second condenser also has cooling medium pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the 4th class heat pump cycle.
2. the 4th class heat pump cycle, by high temperature absorber, the first condenser, first throttle valve, the second condenser, cryogen liquid pump, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, the second generator, the 3rd solution heat exchanger, the second solution pump, injector, the first high pressure generator, the 4th solution heat exchanger, the first low pressure generator and the second choke valve form, high temperature absorber has solution pipeline to be communicated with the first high pressure generator through the second solution heat exchanger, the first high pressure generator has solution pipeline to be communicated with the first low pressure generator through the first solution heat exchanger and the 4th solution heat exchanger, the first low pressure generator has solution pipeline to be communicated with the second generator through the 4th solution heat exchanger and the 3rd solution heat exchanger, the second generator also has solution pipeline to be communicated with absorber through the second solution pump and the 3rd solution heat exchanger, absorber has solution pipeline through the first solution pump, the first solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, after the first high pressure generator also has refrigerant vapour passage to be communicated with the first low pressure generator, the first low pressure generator has cryogen liquid pipeline to be communicated with the first condenser through the second choke valve again, the first low pressure generator also has refrigerant vapour passage to be communicated with the first condenser, the second generator also has refrigerant vapour passage to be communicated with the second condenser, the first condenser also has cryogen liquid pipeline to be communicated with the second condenser through first throttle valve, the second condenser has cryogen liquid pipeline to be communicated with evaporimeter through cryogen liquid pump, the second condenser also has condensate line to be directly communicated with outside, evaporimeter also has refrigerant vapour passage to be communicated with absorber and injector injection entrance respectively, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, evaporimeter and the second generator medium pipeline that also has surplus heat is respectively communicated with outside, absorber, the first condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, the first high pressure generator drives thermal medium pipeline to be communicated with outside in addition, the second condenser also has cooling medium pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the 4th class heat pump cycle.
3. the 4th class heat pump cycle, by high temperature absorber, the first condenser, first throttle valve, the second condenser, cryogen liquid pump, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, the first generator, injector, the second high pressure generator, the 5th solution heat exchanger, the 6th solution heat exchanger, the second low pressure generator, the second solution pump and the 3rd choke valve form, high temperature absorber has solution pipeline to be communicated with the first generator through the second solution heat exchanger, the first generator has solution pipeline to be communicated with the second high pressure generator through the first solution heat exchanger and the 5th solution heat exchanger, the second high pressure generator has solution pipeline to be communicated with the second low pressure generator through the 5th solution heat exchanger and the 6th solution heat exchanger, the second low pressure generator has solution pipeline to be communicated with absorber through the second solution pump and the 6th solution heat exchanger, absorber has solution pipeline through the first solution pump, the first solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, the first generator also has refrigerant vapour passage to be communicated with the first condenser, after the second high pressure generator also has refrigerant vapour passage to be communicated with the second low pressure generator, the second low pressure generator has cryogen liquid pipeline to be communicated with the second condenser through the 3rd choke valve again, the second low pressure generator also has refrigerant vapour passage to be communicated with the second condenser, the first condenser also has cryogen liquid pipeline to be communicated with the second condenser through first throttle valve, the second condenser has cryogen liquid pipeline to be communicated with evaporimeter through cryogen liquid pump, the second condenser also has condensate line to be directly communicated with outside, evaporimeter also has refrigerant vapour passage to be communicated with absorber and injector injection entrance respectively, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, evaporimeter and the second high pressure generator medium pipeline that also has surplus heat is respectively communicated with outside, absorber, the first condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, the first generator drives thermal medium pipeline to be communicated with outside in addition, the second condenser also has cooling medium pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the 4th class heat pump cycle.
4. the 4th class heat pump cycle provided by the present invention, is characterized in that when the compression ratio of injector is greater than 2.5, needs to adopt the steam ejector with taper mixing chamber.
5. the 4th class heat pump cycle provided by the present invention, is characterized in that the expansion ratio of injector is not less than 100.
6. the 4th class heat pump cycle provided by the present invention, is characterized in that between the first high pressure generator and the first low pressure generator, the solution flow process between the second high pressure generator and the second low pressure generator, can be series, parallel, fall series connection.
7. the 4th class heat pump cycle provided by the present invention, is characterized in that high temperature absorber arrangement is on generator or the first high pressure generator.
8. the 4th class heat pump cycle provided by the present invention, while it is characterized in that high temperature absorber arrangement is under generator or the first high pressure generator, high temperature absorber outlet solution needs pumping.
Accompanying drawing explanation
Attached Figure 1 shows that the invention provides the 1st kind of the 4th class heat pump cycle.
Attached Figure 2 shows that the invention provides the 2nd kind of the 4th class heat pump cycle.
Attached Figure 3 shows that the invention provides the 3rd kind of the 4th class heat pump cycle.
In figure, 1-high temperature absorber, the 2-the first condenser, 3-first throttle valve, the 4-the second condenser, 5-cryogen liquid pump, 6-evaporimeter, 7-absorber, the 8-the first solution pump, the 9-the first solution heat exchanger, the 10-the second solution heat exchanger, the 11-the first generator, the 12-the second generator, the 13-the three solution heat exchanger, 14-injector, the 15-the first high pressure generator, the 16-the four solution heat exchanger, the 17-the first low pressure generator, the 18-the second choke valve, the 19-the second high pressure generator, the 20-the five solution heat exchanger, the 21-the six solution heat exchanger, the 22-the second low pressure generator, the 23-the second solution pump, the 24-the three choke valve.
The specific embodiment
Shown in Fig. 1, the 1st kind of the 4th class heat pump cycle is achieved in that
1. in structure, by high temperature absorber 1, the first condenser 2, first throttle valve 3, the second condenser 4, cryogen liquid pump 5, evaporimeter 6, absorber 7, the first solution pump 8, the first solution heat exchanger 9, the second solution heat exchanger 10, the first generator 11, the second generator 12, the 3rd solution heat exchanger 13, the second solution pump 23 and injector 14 form, high temperature absorber 1 has solution pipeline to be communicated with the first generator 11 through the second solution heat exchanger 10, the first generator 11 has solution pipeline to be communicated with the second generator 12 through the first solution heat exchanger 9 and the 3rd solution heat exchanger 13, the second generator 12 has solution pipeline to be communicated with absorber 7 through the second solution pump 23 and the 3rd solution heat exchanger 13, absorber 7 has solution pipeline through the first solution pump 8, the first solution heat exchanger 9 and the second solution heat exchanger 10 are communicated with high temperature absorber 1, the first generator 11 also has refrigerant vapour passage to be communicated with the first condenser 2, the second generator 12 also has refrigerant vapour passage to be communicated with the second condenser 4, the first condenser 2 also has cryogen liquid pipeline to be communicated with the second condenser 4 through first throttle valve 3, the second condenser 4 has cryogen liquid pipeline to be communicated with evaporimeter 6 through cryogen liquid pump 5, the second condenser 4 also has condensate line to be directly communicated with outside, evaporimeter 6 also has refrigerant vapour passage to be communicated with absorber 7 and injector 14 injection entrances respectively, injector 14 outlets also have refrigerant vapour passage to be communicated with high temperature absorber 1, evaporimeter 6 and the second generator 12 medium pipeline that also has surplus heat is respectively communicated with outside, absorber 7, the first condenser 2 and high temperature absorber 1 also have respectively heated medium pipeline to be communicated with outside, the first generator 11 drives thermal medium pipeline to be communicated with outside in addition, the second condenser 4 also has cooling medium pipeline to be communicated with outside, injector 14 working steam entrances drive steam pipework to be communicated with outside in addition, form the 1st kind of the 4th class heat pump cycle.
2. in technique, drive heat medium flow through the first generator 11, the solution that heating enters in it discharges and provides refrigerant vapour to the first condenser 2, solution in the first generator 11 enters the second generator 12 through the first solution heat exchanger 9 and the 3rd solution heat exchanger 13, waste heat MEDIA FLOW is through the second generator 12, the solution that heating enters in it discharges and provides refrigerant vapour to the second condenser 4, the solution of the second generator 12 enters absorber 7 through the second solution pump 23 and the 3rd solution heat exchanger 13, absorb refrigerant vapour heat release in heated medium, the solution of absorber 7 is through the first solution pump 8, the first solution heat exchanger 9 and the second solution heat exchanger 10 enter high temperature absorber 1, absorb refrigerant vapour heat release in heated medium, the solution of high temperature absorber 1 enters the first generator 11 through the second solution heat exchanger 10, enter the cryogen liquid that the refrigerant vapour heat release of the first condenser 2 obtains in heated medium and after 3 throttlings of first throttle valve, enter the second condenser 4, enter the cryogen liquid that the refrigerant medium heat release of the second condenser 4 obtains after cooling medium, a part enters evaporimeter 6 through cryogen liquid pump 5, another part with the form of condensate water directly discharged to outside, waste heat MEDIA FLOW is through evaporimeter 6, the refrigerant medium that heating enters in it becomes refrigerant vapour to absorber 7 and injector 14 injection entrances, to provide respectively, working steam enters injector 14 injections and comes the refrigerant vapour of flash-pot 7 become intermediate pressure and temperature to obtain refrigerant vapour and provide to high temperature absorber 1, form the 1st kind of the 4th class heat pump cycle.
Shown in Fig. 2, the 2nd kind of the 4th class heat pump cycle is achieved in that
1. in structure, by high temperature absorber 1, the first condenser 2, first throttle valve 3, the second condenser 4, cryogen liquid pump 5, evaporimeter 6, absorber 7, the first solution pump 8, the first solution heat exchanger 9, the second solution heat exchanger 10, the second generator 12, the 3rd solution heat exchanger 13, the second solution pump 23, injector 14, the first high pressure generator 15, the 4th solution heat exchanger 16, the first low pressure generator 17 and the second choke valve 18 form, high temperature absorber 1 has solution pipeline to be communicated with the first high pressure generator 15 through the second solution heat exchanger 10, the first high pressure generator 15 has solution pipeline to be communicated with the first low pressure generator 17 through the first solution heat exchanger 9 and the 4th solution heat exchanger 16, the first low pressure generator 17 has solution pipeline to be communicated with the second generator 12 through the 4th solution heat exchanger 16 and the 3rd solution heat exchanger 13, the second generator 12 also has solution pipeline to be communicated with absorber 7 through the second solution pump 23 and the 3rd solution heat exchanger 13, absorber 7 has solution pipeline through the first solution pump 8, the first solution heat exchanger 9 and the second solution heat exchanger 10 are communicated with high temperature absorber 1, after the first high pressure generator 15 also has refrigerant vapour passage to be communicated with the first low pressure generator 17, the first low pressure generator 17 has cryogen liquid pipeline to be communicated with the first condenser 2 through the second choke valve 18 again, the first low pressure generator 17 also has refrigerant vapour passage to be communicated with the first condenser 2, the second generator 12 also has refrigerant vapour passage to be communicated with the second condenser 4, the first condenser 2 also has cryogen liquid pipeline to be communicated with the second condenser 4 through first throttle valve 3, the second condenser 4 has cryogen liquid pipeline to be communicated with evaporimeter 6 through cryogen liquid pump 5, the second condenser 4 also has condensate line to be directly communicated with outside, evaporimeter 6 also has refrigerant vapour passage to be communicated with absorber 7 and injector 14 injection entrances respectively, injector 14 outlets also have refrigerant vapour passage to be communicated with high temperature absorber 1, evaporimeter 6 and the second generator 12 medium pipeline that also has surplus heat is respectively communicated with outside, absorber 7, the first condenser 2 and high temperature absorber 1 also have respectively heated medium pipeline to be communicated with outside, the first high pressure generator 15 drives thermal medium pipeline to be communicated with outside in addition, the second condenser 4 also has cooling medium pipeline to be communicated with outside, injector 14 working steam entrances drive steam pipework to be communicated with outside in addition, form the 2nd kind of the 4th class heat pump cycle.
2. in technique, drive heat medium flow through the first high pressure generator 15, the solution that heating enters in it discharges and provides refrigerant vapour to the first low pressure generator 17, this part refrigerant vapour is as the driving thermal medium of the first low pressure generator 17, the solution that heating enters in it discharges and provides refrigerant vapour to the first condenser 2, the cryogen liquid obtaining after the refrigerant vapour condensation of the first low pressure generator 17 of flowing through enters the first condenser 2 through the second choke valve 18, solution in the first high pressure generator 15 enters the first low pressure generator 17 through the first solution heat exchanger 9 and the 4th solution heat exchanger 16, the outlet solution of the first low pressure generator 17 enters the second generator 12 through the 4th solution heat exchanger 16 and the 3rd solution heat exchanger 13, waste heat MEDIA FLOW is through the second generator 12, the solution that heating enters in it discharges and provides refrigerant vapour to the second condenser 4, the solution of the second generator 12 enters absorber 7 through the second solution pump 23 and the 3rd solution heat exchanger 13, absorb refrigerant vapour heat release in heated medium, the solution of absorber 7 is through the first solution pump 8, the first solution heat exchanger 9 and the second solution heat exchanger 10 enter high temperature absorber 1, absorb refrigerant vapour heat release in heated medium, the solution of high temperature absorber 1 enters the first high pressure generator 15 through the second solution heat exchanger 10, enter the cryogen liquid that the refrigerant medium heat release of the first condenser 2 obtains after heated medium, after 3 throttlings of first throttle valve, enter the second condenser 4, enter the cryogen liquid that the refrigerant medium heat release of the second condenser 4 obtains after cooling medium, a part enters evaporimeter 6 through cryogen liquid pump 5, another part with the form of condensate water directly discharged to outside, waste heat MEDIA FLOW is through evaporimeter 6, the refrigerant medium that heating enters in it becomes refrigerant vapour to absorber 7 and injector 14 injection entrances, to provide respectively, working steam enters injector 14 injections and comes the refrigerant vapour of flash-pot 7 become intermediate pressure and temperature to obtain refrigerant vapour and provide to high temperature absorber 1, form the 2nd kind of the 4th class heat pump cycle.
Shown in Fig. 3, the 3rd kind of the 4th class heat pump cycle is achieved in that
1. in structure, by high temperature absorber 1, the first condenser 2, first throttle valve 3, the second condenser 4, cryogen liquid pump 5, evaporimeter 6, absorber 7, the first solution pump 8, the first solution heat exchanger 9, the second solution heat exchanger 10, the first generator 11, injector 14, the second high pressure generator 19, the 5th solution heat exchanger 20, the 6th solution heat exchanger 21, the second low pressure generator 22, the second solution pump 23 and the 3rd choke valve 24 form, high temperature absorber 1 has solution pipeline to be communicated with the first generator 11 through the second solution heat exchanger 10, the first generator 11 has solution pipeline to be communicated with the second high pressure generator 19 through the first solution heat exchanger 9 and the 5th solution heat exchanger 20, the second high pressure generator 19 has solution pipeline to be communicated with the second low pressure generator 22 through the 5th solution heat exchanger 20 and the 6th solution heat exchanger 21, the second low pressure generator 22 has solution pipeline to be communicated with absorber 7 through the second solution pump 23 and the 6th solution heat exchanger 21, absorber 7 has solution pipeline through the first solution pump 8, the first solution heat exchanger 9 and the second solution heat exchanger 10 are communicated with high temperature absorber 1, the first generator 11 also has refrigerant vapour passage to be communicated with the first condenser 2, after the second high pressure generator 19 also has refrigerant vapour passage to be communicated with the second low pressure generator 22, the second low pressure generator 22 has cryogen liquid pipeline to be communicated with the second condenser 4 through the 3rd choke valve 24 again, the second low pressure generator 22 also has refrigerant vapour passage to be communicated with the second condenser 4, the first condenser 2 also has cryogen liquid pipeline to be communicated with the second condenser 4 through first throttle valve 3, the second condenser 4 has cryogen liquid pipeline to be communicated with evaporimeter 6 through cryogen liquid pump 5, the second condenser 4 also has condensate line to be directly communicated with outside, evaporimeter 6 also has refrigerant vapour passage to be communicated with absorber 7 and injector 14 injection entrances respectively, injector 14 outlets also have refrigerant vapour passage to be communicated with high temperature absorber 1, evaporimeter 6 and the second high pressure generator 19 medium pipeline that also has surplus heat is respectively communicated with outside, absorber 7, the first condenser 2 and high temperature absorber 1 also have respectively heated medium pipeline to be communicated with outside, the first generator 11 drives thermal medium pipeline to be communicated with outside in addition, the second condenser 4 also has cooling medium pipeline to be communicated with outside, injector 14 working steam entrances drive steam pipework to be communicated with outside in addition, form the 3rd kind of the 4th class heat pump cycle.
2. in technique, drive heat medium flow through the first generator 11, the solution that heating enters in it discharges and provides refrigerant vapour to the first condenser 2, solution in the first generator 11 enters the second high pressure generator 19 through the first solution heat exchanger 9 and the 5th solution heat exchanger 20, waste heat MEDIA FLOW is through the second high pressure generator 19, the solution that heating enters in it discharges and provides refrigerant vapour to the second low pressure generator 22, this part refrigerant vapour is as the driving thermal medium of the second low pressure generator 22, the solution that heating enters in it discharges and provides refrigerant vapour to the second condenser 4, the cryogen liquid obtaining after the refrigerant vapour condensation of the second low pressure generator 22 of flowing through enters the second condenser 4 through the 3rd choke valve 24, solution in the second high pressure generator 19 enters the second low pressure generator 22 through the 5th solution heat exchanger 20 and the 6th solution heat exchanger 21, the solution of the second low pressure generator 22 outlets enters absorber 7 through the second solution pump 23 and the 6th solution heat exchanger 21, absorb refrigerant vapour heat release in heated medium, the solution of absorber 7 is through the first solution pump 8, the first solution heat exchanger 9 and the second solution heat exchanger 10 enter high temperature absorber 1, absorb refrigerant vapour heat release in heated medium, the solution of high temperature absorber 1 enters the first generator 11 through the second solution heat exchanger 10, enter the cryogen liquid that the refrigerant vapour heat release of the first condenser 2 obtains in heated medium and after 3 throttlings of first throttle valve, enter the second condenser 4, enter the cryogen liquid that the refrigerant medium heat release of the second condenser 4 obtains after cooling medium, a part enters evaporimeter 6 through cryogen liquid pump 5, another part with the form of condensate water directly discharged to outside, waste heat MEDIA FLOW is through evaporimeter 6, the refrigerant medium that heating enters in it becomes refrigerant vapour to absorber 7 and injector 14 injection entrances, to provide respectively, working steam enters injector 14 injections and comes the refrigerant vapour of flash-pot 7 become intermediate pressure and temperature to obtain refrigerant vapour and provide to high temperature absorber 1, form the 3rd kind of the 4th class heat pump cycle.
the effect that the technology of the present invention can realize---the 4th class heat pump cycle proposed by the invention has following effect and advantage:
1. realize effective utilization of the temperature difference between driving thermal medium and heated medium, realize effective utilization of the temperature difference between waste heat medium and cold environment, realize the effective utilization to pressure reduction between high-quality driving steam and low-pressure steam, reach unprecedented energy-saving effect;
2. the solution that high temperature absorber exports, its concentration gets a promotion through at least twice generating process, and its advantage is, when driving heat source is latent heat, the steam of different grades can be utilized, when driving heat source is sensible heat, the deep exploitation to driving heat source can be realized;
3. there is higher heat supply temperature.Because its grade of injector outlet refrigerant vapour is apparently higher than evaporator outlet refrigerant vapour, so the heat supply temperature of high temperature absorber is apparently higher than condenser or absorber;
4. there is more efficient heat utilization rate.Surpassing absorption heat pump heat supply temperature and obtaining the most significant end of heat supply, employing be jet type heat pump, the method than directly heating with steam, has higher fractional energy savings;
5. than injector being exported to steam, be directly used for heat supply, scheme provided by the present invention, the compression ratio of injector is less, and mass ratio of induced-to-inducing air is higher, and energy-saving effect is better.
Claims (8)
1. the 4th class heat pump cycle, by high temperature absorber, the first condenser, first throttle valve, the second condenser, cryogen liquid pump, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, the first generator, the second generator, the 3rd solution heat exchanger, the second solution pump and injector form, high temperature absorber has solution pipeline to be communicated with the first generator through the second solution heat exchanger, the first generator has solution pipeline to be communicated with the second generator through the first solution heat exchanger and the 3rd solution heat exchanger, the second generator has solution pipeline to be communicated with absorber through the second solution pump and the 3rd solution heat exchanger, absorber has solution pipeline through the first solution pump, the first solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, the first generator also has refrigerant vapour passage to be communicated with the first condenser, the second generator also has refrigerant vapour passage to be communicated with the second condenser, the first condenser also has cryogen liquid pipeline to be communicated with the second condenser through first throttle valve, the second condenser has cryogen liquid pipeline to be communicated with evaporimeter through cryogen liquid pump, the second condenser also has condensate line to be directly communicated with outside, evaporimeter also has refrigerant vapour passage to be communicated with absorber and injector injection entrance respectively, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, evaporimeter and the second generator medium pipeline that also has surplus heat is respectively communicated with outside, absorber, the first condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, the first generator drives thermal medium pipeline to be communicated with outside in addition, the second condenser also has cooling medium pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the 4th class heat pump cycle.
2. the 4th class heat pump cycle, by high temperature absorber, the first condenser, first throttle valve, the second condenser, cryogen liquid pump, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, the second generator, the 3rd solution heat exchanger, the second solution pump, injector, the first high pressure generator, the 4th solution heat exchanger, the first low pressure generator and the second choke valve form, high temperature absorber has solution pipeline to be communicated with the first high pressure generator through the second solution heat exchanger, the first high pressure generator has solution pipeline to be communicated with the first low pressure generator through the first solution heat exchanger and the 4th solution heat exchanger, the first low pressure generator has solution pipeline to be communicated with the second generator through the 4th solution heat exchanger and the 3rd solution heat exchanger, the second generator also has solution pipeline to be communicated with absorber through the second solution pump and the 3rd solution heat exchanger, absorber has solution pipeline through the first solution pump, the first solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, after the first high pressure generator also has refrigerant vapour passage to be communicated with the first low pressure generator, the first low pressure generator has cryogen liquid pipeline to be communicated with the first condenser through the second choke valve again, the first low pressure generator also has refrigerant vapour passage to be communicated with the first condenser, the second generator also has refrigerant vapour passage to be communicated with the second condenser, the first condenser also has cryogen liquid pipeline to be communicated with the second condenser through first throttle valve, the second condenser has cryogen liquid pipeline to be communicated with evaporimeter through cryogen liquid pump, the second condenser also has condensate line to be directly communicated with outside, evaporimeter also has refrigerant vapour passage to be communicated with absorber and injector injection entrance respectively, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, evaporimeter and the second generator medium pipeline that also has surplus heat is respectively communicated with outside, absorber, the first condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, the first high pressure generator drives thermal medium pipeline to be communicated with outside in addition, the second condenser also has cooling medium pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the 4th class heat pump cycle.
3. the 4th class heat pump cycle, by high temperature absorber, the first condenser, first throttle valve, the second condenser, cryogen liquid pump, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, the first generator, injector, the second high pressure generator, the 5th solution heat exchanger, the 6th solution heat exchanger, the second low pressure generator, the second solution pump and the 3rd choke valve form, high temperature absorber has solution pipeline to be communicated with the first generator through the second solution heat exchanger, the first generator has solution pipeline to be communicated with the second high pressure generator through the first solution heat exchanger and the 5th solution heat exchanger, the second high pressure generator has solution pipeline to be communicated with the second low pressure generator through the 5th solution heat exchanger and the 6th solution heat exchanger, the second low pressure generator has solution pipeline to be communicated with absorber through the second solution pump and the 6th solution heat exchanger, absorber has solution pipeline through the first solution pump, the first solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, the first generator also has refrigerant vapour passage to be communicated with the first condenser, after the second high pressure generator also has refrigerant vapour passage to be communicated with the second low pressure generator, the second low pressure generator has cryogen liquid pipeline to be communicated with the second condenser through the 3rd choke valve again, the second low pressure generator also has refrigerant vapour passage to be communicated with the second condenser, the first condenser also has cryogen liquid pipeline to be communicated with the second condenser through first throttle valve, the second condenser has cryogen liquid pipeline to be communicated with evaporimeter through cryogen liquid pump, the second condenser also has condensate line to be directly communicated with outside, evaporimeter also has refrigerant vapour passage to be communicated with absorber and injector injection entrance respectively, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, evaporimeter and the second high pressure generator medium pipeline that also has surplus heat is respectively communicated with outside, absorber, the first condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, the first generator drives thermal medium pipeline to be communicated with outside in addition, the second condenser also has cooling medium pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the 4th class heat pump cycle.
4. the 4th class heat pump cycle provided by the present invention, is characterized in that when the compression ratio of injector is greater than 2.5, needs to adopt the steam ejector with taper mixing chamber.
5. the 4th class heat pump cycle provided by the present invention, is characterized in that the expansion ratio of injector is not less than 100.
6. the 4th class heat pump cycle provided by the present invention, is characterized in that between the first high pressure generator and the first low pressure generator, the solution flow process between the second high pressure generator and the second low pressure generator, can be series, parallel, fall series connection.
7. the 4th class heat pump cycle provided by the present invention, is characterized in that high temperature absorber arrangement is on generator or the first high pressure generator.
8. the 4th class heat pump cycle provided by the present invention, while it is characterized in that high temperature absorber arrangement is under generator or the first high pressure generator, high temperature absorber outlet solution needs pumping.
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Application publication date: 20140212 |