CN103542599A - Double-regeneration heat pump cycle - Google Patents
Double-regeneration heat pump cycle Download PDFInfo
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- CN103542599A CN103542599A CN201310514843.9A CN201310514843A CN103542599A CN 103542599 A CN103542599 A CN 103542599A CN 201310514843 A CN201310514843 A CN 201310514843A CN 103542599 A CN103542599 A CN 103542599A
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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
Abstract
A double-regeneration heat pump cycle comprises a high-temperature absorber, a condenser, a first throttle valve, an evaporator, an absorber, a first solution pump, a first solution heat exchanger, a second solution pump, a fourth solution pump, a second solution heat exchanger, an ejector, a generator or regenerative generator or high pressure generator, a low pressure generator, a second throttle valve or fifth solution heat exchanger, a regenerative high pressure generator, a sixth solution heat exchanger, a regenerative low pressure generator, a third solution pump, and a third throttle valve. Each of the regenerative generator and the regenerative low pressure generator is provided with a coolant steam passage communicated with a jet inlet of the ejector. A jet heat pump and an absorbing heat pump are combined organically; heating temperature is increased; heat utilization is more efficient; high-quality drive steam can be efficiently utilized by different grades of drive heats; compression ratio is smaller, and ejecting coefficient is higher; compared with the traditional heating way, the double-regeneration heat pump cycle has excellent energy-saving efficiency.
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 multistage 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.
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.
Summary of the invention
The invention provides the heat pump cycle of dual backheat.
1. the heat pump cycle of dual backheat, by high temperature absorber, condenser, first throttle valve, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, backheat generator, the second solution pump, the second solution heat exchanger, generator, the 4th solution pump and injector form, generator has concentrated solution pipeline to be communicated with absorber through the first solution heat exchanger, absorber has weak solution pipeline through the first solution pump, the first solution heat exchanger is communicated with backheat generator, backheat generator also has solution pipeline to be communicated with high temperature absorber through the second solution pump and the second solution heat exchanger, high temperature absorber also has solution pipeline to be communicated with generator through the 4th solution pump and the second solution heat exchanger, generator has refrigerant vapour passage to be communicated with condenser, backheat generator has refrigerant vapour passage to be communicated with injector, condenser has cryogen liquid pipeline to be communicated with evaporimeter through first throttle valve, condenser also has condensate line to be directly communicated with outside, evaporimeter has refrigerant vapour passage to be communicated with absorber, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, the evaporimeter medium pipeline that also has surplus heat is communicated with outside, absorber, condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, generator and backheat generator also have respectively the thermal medium of driving pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the heat pump cycle of dual backheat.
2. the heat pump cycle of dual backheat, by high temperature absorber, condenser, first throttle valve, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, backheat generator, the second solution pump, the second solution heat exchanger, injector, high pressure generator, the 3rd solution heat exchanger, the 4th solution heat exchanger, low pressure generator, the 4th solution pump and the second choke valve form, wherein, high temperature absorber has weak solution pipeline to be communicated with high pressure generator through the 4th solution pump and the second solution heat exchanger, high pressure generator also has solution pipeline to be communicated with low pressure generator through the 3rd solution heat exchanger and the 4th solution heat exchanger, low pressure generator also has solution pipeline to be communicated with absorber through the 4th solution heat exchanger and the first solution heat exchanger, absorber also has solution pipeline to be communicated with backheat generator through the first solution pump and the first solution heat exchanger, backheat generator also has solution pipeline through the second solution pump, the 3rd solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, after high pressure generator has refrigerant vapour passage to be communicated with low pressure generator, low pressure generator has cryogen liquid pipeline to be communicated with condenser through the second choke valve again, low pressure generator also has refrigerant vapour passage to be communicated with condenser, backheat generator also has refrigerant vapour passage to be communicated with injector, condenser has cryogen liquid pipeline to be communicated with evaporimeter through first throttle valve, condenser also has condensate line to be directly communicated with outside, evaporimeter has refrigerant vapour passage to be communicated with absorber, the outlet of injector injection also has refrigerant vapour passage to be communicated with high temperature absorber, the evaporimeter medium pipeline that also has surplus heat is communicated with outside, absorber, condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, high pressure generator and backheat generator also have respectively the thermal medium of driving pipeline to be communicated with outside, injector working steam entrance also has working steam pipeline to be communicated with outside, form the heat pump cycle of dual backheat.
3. the heat pump cycle of dual backheat, by high temperature absorber, condenser, first throttle valve, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, generator, injector, the 5th solution heat exchanger, backheat high pressure generator, the 6th solution heat exchanger, backheat low pressure generator, the 3rd solution pump, , the 4th solution pump and the 3rd choke valve or cryogen liquid pump form, high temperature absorber has solution pipeline to be communicated with generator through the 4th solution pump and the second solution heat exchanger, generator also has solution pipeline to be communicated with absorber through the first solution heat exchanger, absorber also has solution pipeline to be communicated with backheat high pressure generator through the first solution pump and the first solution heat exchanger, backheat high pressure generator also has solution pipeline to be communicated with backheat low pressure generator through the 5th solution heat exchanger and the 6th solution heat exchanger, backheat low pressure generator also has solution pipeline through the 3rd solution pump, the 6th solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, after backheat high pressure generator has refrigerant vapour passage to be communicated with backheat low pressure generator, backheat low pressure generator has cryogen liquid pipeline to be communicated with condenser through the 3rd choke valve or cryogen liquid pump again, backheat low pressure generator also has refrigerant vapour passage to be communicated with injector, generator has refrigerant vapour passage to be communicated with condenser, condenser has cryogen liquid pipeline to be communicated with evaporimeter through first throttle valve, condenser also has condensate line to be directly communicated with outside, evaporimeter has refrigerant vapour passage to be communicated with absorber, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, the evaporimeter medium pipeline that also has surplus heat is communicated with outside, absorber, condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, backheat high pressure generator and generator also have respectively the thermal medium of driving pipeline to be communicated with outside, injector working steam entrance also has working steam pipeline to be communicated with outside, form the heat pump cycle of dual backheat.
4. the heat pump cycle of dual backheat 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 heat pump cycle of dual backheat provided by the present invention, is characterized in that the expansion ratio of injector is not less than 100.
6. the heat pump cycle of dual backheat provided by the present invention, is characterized in that between high pressure generator and low pressure generator, the solution flow process between backheat high pressure generator and backheat low pressure generator, can be series, parallel, fall series connection.
Accompanying drawing explanation
The attached heat pump cycle that Figure 1 shows that the dual backheat based on single-action first-class absorption type heat pump provided by the invention.
The attached heat pump cycle that Figure 2 shows that the dual backheat based on economic benefits and social benefits first-class absorption type heat pump provided by the invention.
The attached heat pump cycle that Figure 3 shows that the dual backheat based on type-I regenerative double-effect absorption heat pump provided by the invention.
In figure, 1-high temperature absorber, 2-condenser, 3-first throttle valve, 4-evaporimeter, 5-absorber, the 6-the first solution pump, the 7-the first solution heat exchanger, 8-backheat generator, the 9-the second solution pump, the 10-the second solution heat exchanger, 11-generator, 12-injector, 13-high pressure generator, the 14-the three solution heat exchanger, the 15-the four solution heat exchanger, 16-low pressure generator, the 17-the second choke valve, the 18-the five solution heat exchanger, 19-backheat high pressure generator, the 20-the six solution heat exchanger, 21-backheat low pressure generator, the 22-the three solution pump, the 23-the three choke valve, the 24-the four solution pump.
The specific embodiment
The heat pump cycle of the dual backheat based on single-action first-class absorption type heat pump shown in Fig. 1 is achieved in that
1. in structure, by high temperature absorber 1, condenser 2, first throttle valve 3, evaporimeter 4, absorber 5, the first solution pump 6, the first solution heat exchanger 7, backheat generator 8, the second solution pump 9, the second solution heat exchanger 10, generator 11, the 4th solution pump 24 and injector 12 form, wherein, generator 11 has concentrated solution pipeline to be communicated with absorber 5 through the first solution heat exchanger 7, absorber 5 has weak solution pipeline through the first solution pump 6, the first solution heat exchanger 7 is communicated with backheat generator 8, backheat generator also has solution pipeline to be communicated with high temperature absorber 1 through the second solution pump 9 and the second solution heat exchanger 10, high temperature absorber 1 also has solution pipeline to be communicated with generator 11 through the 4th solution pump 24 and the second solution heat exchanger 10, generator 11 has refrigerant vapour passage to be communicated with condenser 2, backheat generator 8 has refrigerant vapour passage to be communicated with injector 12, condenser 2 has cryogen liquid pipeline to be communicated with evaporimeter 4 through first throttle valve 3, condenser 2 also has condensate line to be directly communicated with outside, evaporimeter 4 has refrigerant vapour passage to be communicated with absorber 5, injector 12 outlets also have refrigerant vapour passage to be communicated with high temperature absorber 1, evaporimeter 4 medium pipeline that also has surplus heat is communicated with outside, absorber 5, condenser 2 and high temperature absorber 1 also have respectively heated medium pipeline to be communicated with outside, generator 11 and backheat generator 8 also have respectively the thermal medium of driving pipeline to be communicated with outside, injector 12 working steam entrances drive steam pipework to be communicated with outside in addition, the heat pump cycle of the dual backheat of formation based on single-action first-class absorption type heat pump.
2. in technique, drive heat medium flow through generator 11, the solution that heating enters in it discharges and provides refrigerant vapour to condenser 2, concentrated solution in generator 11 enters absorber 5 through the first solution heat exchanger 7, absorb refrigerant vapour heat release in heated medium, weak solution in absorber 5 enters backheat generator 8 through the first solution pump 6 and the first solution heat exchanger 7, drive heat medium flow through backheat generator 8, the solution that heating enters in it discharges and provides refrigerant vapour to injector 12, the concentrated solution of backheat generator 8 enters high temperature absorber 1 through the second solution heat exchanger 9 and the second solution heat exchanger 10, absorb refrigerant vapour heat release and heated medium, the solution of high temperature absorber 1 outlet enters generator 11 through the 4th solution pump 24 and the second solution heat exchanger 10, enter the cryogen liquid that the refrigerant vapour heat release in condenser 2 forms in heated medium, a part enters evaporimeter 4 after 3 throttlings of first throttle valve, another part with the form of condensate water discharged to outside, waste heat MEDIA FLOW is through evaporimeter 4, the refrigerant vapour that heating enters the refrigerant medium one-tenth in it provides to absorber 5, working steam enters injector 12, injection becomes the refrigerant vapour of intermediate pressure and temperature and provides to high temperature absorber 1 from the refrigerant vapour in backheat generator 8, the heat pump cycle of the dual backheat of formation based on single-action first-class absorption type heat pump.
The heat pump cycle of the dual backheat based on economic benefits and social benefits first-class absorption type heat pump shown in Fig. 2 is achieved in that
1. in structure, by high temperature absorber 1, condenser 2, first throttle valve 3, evaporimeter 4, absorber 5, the first solution pump 6, the first solution heat exchanger 7, backheat generator 8, the second solution pump 9, the second solution heat exchanger 10, injector 12, high pressure generator 13, the 3rd solution heat exchanger 14, the 4th solution heat exchanger 15, low pressure generator 16, the 4th solution pump 24 and the second choke valve 17 form, wherein, high temperature absorber 1 has weak solution pipeline to be communicated with high pressure generator 13 through the 4th solution pump 24 and the second solution heat exchanger 10, high pressure generator 13 also has solution pipeline to be communicated with low pressure generator 16 through the 3rd solution heat exchanger 14 and the 4th solution heat exchanger 15, low pressure generator 16 also has solution pipeline to be communicated with absorber 5 through the 4th solution heat exchanger 15 and the first solution heat exchanger 7, absorber 5 also has solution pipeline to be communicated with backheat generator 8 through the first solution pump 6 and the first solution heat exchanger 7, backheat generator 8 also has solution pipeline through the second solution pump 9, the 3rd solution heat exchanger 14 and the second solution heat exchanger 10 are communicated with high temperature absorber 1, after high pressure generator 13 has refrigerant vapour passage to be communicated with low pressure generator 16, low pressure generator 16 has cryogen liquid pipeline to be communicated with condenser 2 through the second choke valve 16 again, low pressure generator 16 also has refrigerant vapour passage to be communicated with condenser 2, backheat generator 8 also has refrigerant vapour passage injector 12 to be communicated with, condenser 2 has cryogen liquid pipeline to be communicated with evaporimeter 4 through first throttle valve 3, condenser 2 also has condensate line to be directly communicated with outside, evaporimeter 4 has refrigerant vapour passage to be communicated with absorber 5, injector 12 injection outlets also have refrigerant vapour passage to be communicated with high temperature absorber 1, evaporimeter 4 medium pipeline that also has surplus heat is communicated with outside, absorber 5, condenser 2 and high temperature absorber 1 also have respectively heated medium pipeline to be communicated with outside, high pressure generator 13 and backheat generator 8 also have respectively the thermal medium of driving pipeline to be communicated with outside, injector 12 working steam entrances also have working steam pipeline to be communicated with outside, the heat pump cycle of the dual backheat of formation based on economic benefits and social benefits first-class absorption type heat pump.
2. in technique, drive heat medium flow through high pressure generator 13, the solution that heating enters in it discharges and provides refrigerant vapour to low pressure generator 16, this part refrigerant vapour is as the driving thermal medium of low pressure generator 16, the solution that heating enters in it discharges and provides refrigerant vapour to condenser 2, the cryogen liquid obtaining after the refrigerant vapour condensation of low pressure generator 16 of flowing through enters condenser 2 after the second choke valve 17 throttlings, solution in high pressure generator 13 enters low pressure generator 16 after the 3rd solution heat exchanger 14 and the 4th solution heat exchanger 15, the solution of low pressure generator 16 outlets enters absorber 5 through the 4th solution heat exchanger 13 and the first solution heat exchanger 7, absorb refrigerant vapour heat release in heated medium, weak solution in absorber 5 is through the first solution pump 6, after the first solution heat exchanger 7, enter backheat generator 8, drive heat medium flow through backheat generator 8, the solution that heating enters in it discharges and provides refrigerant vapour to injector 12, the solution of backheat generator 8 outlets is through the second solution pump 9, the 3rd solution heat exchanger 14 and the second solution heat exchanger 10 enter high temperature absorber 1, absorb refrigerant vapour heat release in heated medium, solution in high temperature absorber 1 enters high pressure generator 13 after the 4th solution pump 24 and the second solution heat exchanger 10, the refrigerant vapour heat release entering in condenser 2 forms cryogen liquid in heated medium, a part enters evaporimeter 4 after 3 throttlings of first throttle valve, another part with the form of condensate water discharged to outside, waste heat MEDIA FLOW is through evaporimeter 4, the refrigerant medium that heating enters in it becomes refrigerant vapour to provide to absorber 5, working steam enters injector 12, injection becomes the refrigerant vapour of intermediate pressure and temperature and provides to high temperature absorber 1 from the refrigerant vapour in backheat generator 8, the heat pump cycle of the dual backheat of formation based on economic benefits and social benefits first-class absorption type heat pump.
The heat pump cycle of the dual backheat based on type-I regenerative double-effect absorption heat pump shown in Fig. 3 is achieved in that
1. in structure, by high temperature absorber 1, condenser 2, first throttle valve 3, evaporimeter 4, absorber 5, the first solution pump 6, the first solution heat exchanger 7, the second solution heat exchanger 10, generator 11, injector 12, the 5th solution heat exchanger 18, backheat high pressure generator 19, the 6th solution heat exchanger 20, backheat low pressure generator 21, the 3rd solution pump 22, the 3rd choke valve 23 and the 4th solution pump 24 form, high temperature absorber 1 has solution pipeline to be communicated with generator 11 through the 4th solution pump 24 and the second solution heat exchanger 10, generator 11 also has solution pipeline to be communicated with absorber 5 through the first solution heat exchanger 7, absorber 5 also has solution pipeline to be communicated with backheat high pressure generator 19 through the first solution pump 6 and the first solution heat exchanger 7, backheat high pressure generator 19 also has solution pipeline to be communicated with backheat low pressure generator 21 through the 5th solution heat exchanger 18 and the 6th solution heat exchanger 20, backheat low pressure generator 21 also has solution pipeline through the 3rd solution pump 22, the 6th solution heat exchanger 20 and the second solution heat exchanger 10 are communicated with high temperature absorber 1, after backheat high pressure generator 19 has refrigerant vapour passage to be communicated with backheat low pressure generator 21, backheat low pressure generator 21 has cryogen liquid pipeline to be communicated with condenser 2 through the 3rd choke valve 23 again, backheat low pressure generator 21 also has refrigerant vapour passage to be communicated with injector 12, generator 11 has refrigerant vapour passage to be communicated with condenser 2, condenser 2 has cryogen liquid pipeline to be communicated with evaporimeter 4 through first throttle valve 3, condenser 2 also has condensate line to be directly communicated with outside, evaporimeter 4 has refrigerant vapour passage to be communicated with absorber 5, injector 12 injection outlets also have refrigerant vapour passage to be communicated with high temperature absorber 1, evaporimeter 4 medium pipeline that also has surplus heat is communicated with outside, absorber 5, condenser 2 and high temperature absorber 1 also have respectively heated medium pipeline to be communicated with outside, backheat high pressure generator 19 and generator 11 also have respectively the thermal medium of driving pipeline to be communicated with outside, injector 12 working steam entrances also have working steam pipeline to be communicated with outside, the heat pump cycle of the dual backheat of formation based on economic benefits and social benefits first-class absorption type heat pump.
2. in technique, drive heat medium flow through backheat high pressure generator 19, the solution that heating enters in it discharges and provides refrigerant vapour to backheat low pressure generator 21, this part refrigerant vapour is as the driving thermal medium of backheat low pressure generator 21, the solution that heating enters in it discharges and provides refrigerant vapour to injector 12, the cryogen liquid obtaining after the refrigerant vapour condensation of the backheat of flowing through low pressure generator 21 enters condenser 2 through the 3rd choke valve 23, solution in backheat high pressure generator 21 enters backheat low pressure generator 21 after the 5th solution heat exchanger 14 and the 6th solution heat exchanger 20, the solution of backheat low pressure generator 21 outlets is through the 3rd solution pump 22, the 6th solution heat exchanger 20 and the second solution heat exchanger 10 enter high temperature absorber 1, absorb refrigerant vapour heat release in heated medium, weak solution in high temperature absorber 1 enters generator 11 after the 4th solution pump 24 and the second solution heat exchanger 10, drive heat medium flow through generator 11, the solution that heating enters in it discharges and provides refrigerant vapour to condenser 2, the solution of generator 11 outlets enters absorber 5 through the first solution heat exchanger 7, absorb refrigerant vapour heat release in heated medium, solution in absorber 5 is through the first solution pump 6, after the first solution heat exchanger 7 and the 5th solution heat exchanger 18, enter backheat high pressure generator 19, the refrigerant vapour heat release entering in condenser 2 forms cryogen liquid in heated medium, a part enters evaporimeter 4 after 3 throttlings of first throttle valve, another part with the form of condensate water discharged to outside, waste heat MEDIA FLOW is through evaporimeter 4, the refrigerant medium that heating enters in it becomes refrigerant vapour to provide to absorber 5, working steam enters injector 12, injection becomes the refrigerant vapour of intermediate pressure and temperature and provides to high temperature absorber 1 from the refrigerant vapour in backheat low pressure generator 21, the heat pump cycle of the dual backheat of formation based on type-I regenerative double-effect absorption heat pump.
the effect that the technology of the present invention can realize---the heat pump cycle of dual backheat proposed by the invention has following effect and advantage:
1. the solution of high temperature absorber outlet, its concentration gets a promotion through generating process at least one times, and than not adopting backheat, its advantage is, and heat supply temperature is improved;
2. there is more rational thermodynamic parameter.Solution concentration was improved, before entering generator or high pressure generator, is reduced before entering absorber, was conducive to the heat supply temperature that provides higher or reduced driving hot requirement;
3. can utilize the driving thermal medium of different grades.
4. there is more efficient heat utilization rate.At the most significant end that surpasses the heat supply of absorption heat pump heat supply temperature, employing be jet type heat pump, the method than directly heating with steam, has higher fractional energy savings;
5. realize the efficient utilization to high-quality driving steam.Adopt the way of injection that evaporator outlet refrigerant vapour is improved and be finally used for external heat supply, low temperature exhaust heat also can be played a role, this has fully demonstrated the value of high-quality driving steam;
6. 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 (6)
1. the heat pump cycle of dual backheat, by high temperature absorber, condenser, first throttle valve, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, backheat generator, the second solution pump, the second solution heat exchanger, generator, the 4th solution pump and injector form, generator has concentrated solution pipeline to be communicated with absorber through the first solution heat exchanger, absorber has weak solution pipeline through the first solution pump, the first solution heat exchanger is communicated with backheat generator, backheat generator also has solution pipeline to be communicated with high temperature absorber through the second solution pump and the second solution heat exchanger, high temperature absorber also has solution pipeline to be communicated with generator through the 4th solution pump and the second solution heat exchanger, generator has refrigerant vapour passage to be communicated with condenser, backheat generator has refrigerant vapour passage to be communicated with injector, condenser has cryogen liquid pipeline to be communicated with evaporimeter through first throttle valve, condenser also has condensate line to be directly communicated with outside, evaporimeter has refrigerant vapour passage to be communicated with absorber, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, the evaporimeter medium pipeline that also has surplus heat is communicated with outside, absorber, condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, generator and backheat generator also have respectively the thermal medium of driving pipeline to be communicated with outside, injector working steam entrance drives steam pipework to be communicated with outside in addition, form the heat pump cycle of dual backheat.
2. the heat pump cycle of dual backheat, by high temperature absorber, condenser, first throttle valve, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, backheat generator, the second solution pump, the second solution heat exchanger, injector, high pressure generator, the 3rd solution heat exchanger, the 4th solution heat exchanger, low pressure generator, the 4th solution pump and the second choke valve form, wherein, high temperature absorber has weak solution pipeline to be communicated with high pressure generator through the 4th solution pump and the second solution heat exchanger, high pressure generator also has solution pipeline to be communicated with low pressure generator through the 3rd solution heat exchanger and the 4th solution heat exchanger, low pressure generator also has solution pipeline to be communicated with absorber through the 4th solution heat exchanger and the first solution heat exchanger, absorber also has solution pipeline to be communicated with backheat generator through the first solution pump and the first solution heat exchanger, backheat generator also has solution pipeline through the second solution pump, the 3rd solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, after high pressure generator has refrigerant vapour passage to be communicated with low pressure generator, low pressure generator has cryogen liquid pipeline to be communicated with condenser through the second choke valve again, low pressure generator also has refrigerant vapour passage to be communicated with condenser, backheat generator also has refrigerant vapour passage to be communicated with injector, condenser has cryogen liquid pipeline to be communicated with evaporimeter through first throttle valve, condenser also has condensate line to be directly communicated with outside, evaporimeter has refrigerant vapour passage to be communicated with absorber, the outlet of injector injection also has refrigerant vapour passage to be communicated with high temperature absorber, the evaporimeter medium pipeline that also has surplus heat is communicated with outside, absorber, condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, high pressure generator and backheat generator also have respectively the thermal medium of driving pipeline to be communicated with outside, injector working steam entrance also has working steam pipeline to be communicated with outside, form the heat pump cycle of dual backheat.
3. the heat pump cycle of dual backheat, by high temperature absorber, condenser, first throttle valve, evaporimeter, absorber, the first solution pump, the first solution heat exchanger, the second solution heat exchanger, generator, injector, the 5th solution heat exchanger, backheat high pressure generator, the 6th solution heat exchanger, backheat low pressure generator, the 3rd solution pump, , the 4th solution pump and the 3rd choke valve or cryogen liquid pump form, high temperature absorber has solution pipeline to be communicated with generator through the 4th solution pump and the second solution heat exchanger, generator also has solution pipeline to be communicated with absorber through the first solution heat exchanger, absorber also has solution pipeline to be communicated with backheat high pressure generator through the first solution pump and the first solution heat exchanger, backheat high pressure generator also has solution pipeline to be communicated with backheat low pressure generator through the 5th solution heat exchanger and the 6th solution heat exchanger, backheat low pressure generator also has solution pipeline through the 3rd solution pump, the 6th solution heat exchanger and the second solution heat exchanger are communicated with high temperature absorber, after backheat high pressure generator has refrigerant vapour passage to be communicated with backheat low pressure generator, backheat low pressure generator has cryogen liquid pipeline to be communicated with condenser through the 3rd choke valve or cryogen liquid pump again, backheat low pressure generator also has refrigerant vapour passage to be communicated with injector, generator has refrigerant vapour passage to be communicated with condenser, condenser has cryogen liquid pipeline to be communicated with evaporimeter through first throttle valve, condenser also has condensate line to be directly communicated with outside, evaporimeter has refrigerant vapour passage to be communicated with absorber, injector outlet also has refrigerant vapour passage to be communicated with high temperature absorber, the evaporimeter medium pipeline that also has surplus heat is communicated with outside, absorber, condenser and high temperature absorber also have respectively heated medium pipeline to be communicated with outside, backheat high pressure generator and generator also have respectively the thermal medium of driving pipeline to be communicated with outside, injector working steam entrance also has working steam pipeline to be communicated with outside, form the heat pump cycle of dual backheat.
4. the heat pump cycle of dual backheat 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 heat pump cycle of dual backheat provided by the present invention, is characterized in that the expansion ratio of injector is not less than 100.
6. the heat pump cycle of dual backheat provided by the present invention, is characterized in that between high pressure generator and low pressure generator, the solution flow process between backheat high pressure generator and backheat low pressure generator, can be series, parallel, fall series connection.
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| CN201310514843.9A CN103542599A (en) | 2013-10-28 | 2013-10-28 | Double-regeneration heat pump cycle |
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Application publication date: 20140129 |