CN106440473B - Fifth-class absorption heat pump - Google Patents
Fifth-class absorption heat pump Download PDFInfo
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- CN106440473B CN106440473B CN201610820916.0A CN201610820916A CN106440473B CN 106440473 B CN106440473 B CN 106440473B CN 201610820916 A CN201610820916 A CN 201610820916A CN 106440473 B CN106440473 B CN 106440473B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The invention provides a fifth type absorption heat pump, and belongs to the technical field of absorption heat pumps and efficient utilization of heat energy. The generator, the second generator, the third generator, the absorber, the second absorber, the solution pump, the second solution pump, the third solution pump, the solution heat exchanger, the second solution heat exchanger and the third solution heat exchanger form a solution loop, the generator is provided with a refrigerant steam channel communicated with the condenser, the second generator is provided with a refrigerant steam channel communicated with the second condenser, the third generator is provided with a refrigerant steam channel communicated with the second absorber, the condenser is communicated with the evaporator through the third generator and the throttle valve, the second condenser is communicated with the evaporator through the refrigerant liquid pump and the second absorber, the evaporator is provided with a refrigerant steam channel communicated with the absorber, the generator is provided with a high-temperature heat medium channel, the second generator and the evaporator are provided with low-temperature heat medium channels, the second condenser is provided with a cooling medium channel, the absorber and the condenser are respectively communicated with the outside through heated medium channels, and a fifth-type absorption heat pump is formed.
Description
The technical field is as follows:
the invention belongs to the technical field of absorption heat pumps and efficient utilization of heat energy.
Background art:
in the technical field of absorption heat pumps, there are a first type absorption heat pump (absorption refrigerator) using the temperature difference between a high-temperature driving heat medium and a heated medium as a driving temperature difference, a second type absorption heat pump using the temperature difference between a medium-temperature heat medium and a cold environment (cooling medium) as a driving temperature difference, a third type absorption heat pump using the two temperature differences as the driving temperature difference, and a fourth type absorption heat pump and a fifth type absorption heat pump containing a high-temperature heat load step-by-step temperature drop as the driving temperature difference.
In an absorption heat pump, when latent heat of a refrigerant medium is small, and particularly when a difference between a condensation temperature and a refrigerant steam temperature in an evaporator is large, throttling loss of high-temperature refrigerant liquid is overlarge, and a temperature difference of low-temperature refrigerant liquid in a heating and temperature-raising stage in the evaporator is overlarge, so that irreversible loss is increased; in addition, the flow rate of the refrigerant liquid is relatively large, which causes large shortage of the temperature difference utilization level. The inventor realizes the problem and provides a fifth-class absorption heat pump which effectively utilizes the step-by-step temperature reduction of a high-temperature thermal load to realize the solution concentration increase, simultaneously utilizes the temperature difference between a low-temperature thermal medium and a cold environment, and adopts the combination of a generator and an absorber to realize the preheating of the low-temperature refrigerant liquid by the high-temperature refrigerant liquid; the utilization level of the temperature difference between the high-temperature heat medium and the low-temperature heat medium is improved, and irreversible loss in the process of heating the low-temperature refrigerant liquid by the low-temperature heat medium is avoided to a greater extent.
The invention content is as follows:
the invention mainly aims to provide a fifth-type absorption heat pump, and the specific contents of the invention are explained in different terms as follows:
1. the fifth type absorption heat pump mainly comprises a generator, a second generator, a third generator, an absorber, a second absorber, a condenser, a second condenser, an evaporator, a refrigerant liquid pump, a throttle valve, a solution pump, a second solution pump, a third solution pump, a solution heat exchanger, a second solution heat exchanger and a third solution heat exchanger; the absorber is provided with a dilute solution pipeline which is communicated with the generator through a solution pump and a solution heat exchanger, the generator is also provided with a concentrated solution pipeline which is communicated with the second absorber through the solution heat exchanger and a second solution heat exchanger, the second absorber is also provided with a dilute solution pipeline which is communicated with the second generator through a third solution heat exchanger, the second generator is also provided with a concentrated solution pipeline which is communicated with the third generator through the second solution pump and the third solution heat exchanger, the third generator is also provided with a concentrated solution pipeline which is communicated with the absorber through the third solution pump and the second solution heat exchanger, the generator is also provided with a refrigerant steam channel which is communicated with the condenser, the second generator is also provided with a refrigerant steam channel which is communicated with the second condenser, the third generator is also provided with a refrigerant steam channel which is communicated with the second absorber, the condenser is also provided with a refrigerant liquid pipeline which is communicated with the evaporator through the third generator and a throttle valve, and the second condenser is also provided with a refrigerant liquid pipeline which is communicated, the evaporator is also provided with a refrigerant steam channel communicated with the absorber, the generator is also provided with a high-temperature heat medium channel communicated with the outside, the second generator and the evaporator are also respectively provided with a low-temperature heat medium channel communicated with the outside, the absorber and the condenser are also provided with a heated medium channel communicated with the outside, and the second condenser is also provided with a cooling medium channel communicated with the outside to form a fifth-class absorption heat pump.
2. The fifth type absorption heat pump is the fifth type absorption heat pump described in item 1, wherein a throttle valve is eliminated, and the condenser refrigerant liquid pipeline is adjusted to be communicated with the evaporator through a third generator and the throttle valve, so that the condenser refrigerant liquid pipeline is communicated with the evaporator through the third generator, thereby forming the fifth type absorption heat pump.
3. The fifth absorption heat pump is characterized in that a fourth generator, a second throttle valve, a fourth solution pump, a fourth solution heat exchanger and a heat supplier are added in the fifth absorption heat pump of item 1, a dilute solution pipeline is additionally arranged on the absorber and is communicated with the fourth generator through the fourth solution pump and the fourth solution heat exchanger, a concentrated solution pipeline is also arranged on the fourth generator and is communicated with a second absorber through the fourth solution heat exchanger, a refrigerant steam channel of the generator is communicated with a condenser, the fourth generator is communicated with the evaporator through the heat supplier, the third generator and the second throttle valve after the generator is communicated with a refrigerant steam channel, the fourth generator is communicated with the condenser through the refrigerant steam channel, and the heat supplier is also communicated with the outside through a heated medium channel to form the fifth absorption heat pump.
4. A fifth type absorption heat pump is obtained by adding a fourth generator, a second throttle valve, a fourth solution heat exchanger and a heat supplier to the fifth type absorption heat pump described in item 1, adjusting the connection of the absorber with a dilute solution pipeline through the solution pump and the solution heat exchanger and the generator to the connection of the absorber with a dilute solution pipeline through the solution pump, the solution heat exchanger and the fourth solution heat exchanger and the generator, adjusting the connection of the generator with a concentrated solution pipeline through the solution heat exchanger and the second absorber to the connection of the generator with a concentrated solution pipeline through the fourth solution heat exchanger and the fourth generator, adjusting the connection of the generator with a refrigerant vapor channel and the condenser to the connection of the generator with a refrigerant vapor channel and the fourth generator, and then adjusting the connection of the fourth generator with a refrigerant liquid pipeline through the heat supplier, The third generator and the second throttle valve are communicated with the evaporator, the fourth generator is also communicated with the condenser through a refrigerant steam channel, and the heat supply device is also communicated with the outside through a heated medium channel to form a fifth-class absorption heat pump.
5. The fifth absorption heat pump is characterized in that a fourth generator, a second throttle valve, a fourth solution pump, a fourth solution heat exchanger and a heat supplier are added in the fifth absorption heat pump of item 1, the absorber is communicated with the generator through a solution pump and a solution heat exchanger and is adjusted to be communicated with the generator through a dilute solution pipeline, the absorber is communicated with the fourth generator through the solution pump and the solution heat exchanger, the fourth generator is communicated with the generator through a concentrated solution pipeline, the generator is communicated with the second absorber through the solution heat exchanger and the second solution heat exchanger and is adjusted to be communicated with the generator through a concentrated solution pipeline, the fourth solution heat exchanger, the solution heat exchanger and the second solution heat exchanger, the generator is communicated with the condenser through a refrigerant steam channel, the generator is adjusted to be communicated with the fourth generator through a refrigerant steam channel, and then the fourth generator is communicated with the fourth generator through a cold steam channel The refrigerant liquid pipeline is communicated with the evaporator through a heat supply device, a third generator and a second throttling valve, the fourth generator is also communicated with the condenser through a refrigerant steam channel, and the heat supply device is also communicated with the outside through a heated medium channel to form a fifth-class absorption heat pump.
6. The fifth type absorption heat pump is characterized in that in any one of the fifth type absorption heat pumps in items 3-5, a high-temperature heat medium channel is additionally arranged on a fourth generator and is communicated with the outside to form the fifth type absorption heat pump.
7. A fifth-type absorption heat pump, which is characterized in that in any fifth-type absorption heat pump in items 3-6, a throttle valve and a second throttle valve are omitted, a third generator refrigerant liquid pipeline is communicated with an evaporator through the throttle valve and adjusted to be communicated with the evaporator through a third generator refrigerant liquid pipeline, and the third generator refrigerant liquid pipeline is communicated with the evaporator through the second throttle valve and adjusted to be communicated with the evaporator through a third generator refrigerant liquid pipeline, so that the fifth-type absorption heat pump is formed.
8. A fifth type absorption heat pump is characterized in that a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added in any fifth type absorption heat pump in items 1-2, a generator is communicated with a condenser through a refrigerant steam channel and adjusted to be communicated with the third absorber through the refrigerant steam channel, the third absorber is also communicated with the fourth generator through the fourth solution pump and the fourth solution heat exchanger through a dilute solution pipeline, the fourth generator is also communicated with the third absorber through the fourth solution heat exchanger through a concentrated solution pipeline, the fourth generator is also communicated with the condenser through the refrigerant steam channel, the fourth generator is also communicated with the outside through a high-temperature heat medium channel, and the third absorber is also communicated with the outside through a heated medium channel to form the fifth type absorption heat pump.
9. A fifth type absorption heat pump, wherein a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added in any one of the fifth type absorption heat pumps described in items 1-2, the absorber is adjusted to have a dilute solution pipeline communicated with the generator through the solution pump and the solution heat exchanger so that the absorber has a dilute solution pipeline communicated with the third absorber through the solution pump and the solution heat exchanger, the third absorber is further adjusted to have a dilute solution pipeline communicated with the generator through the fourth solution pump and the fourth solution heat exchanger, the generator has a concentrated solution pipeline communicated with the second absorber through the solution heat exchanger and the second solution heat exchanger so that the generator has a concentrated solution pipeline communicated with the fourth generator through the fourth solution heat exchanger, and the fourth generator is further adjusted to have a concentrated solution pipeline communicated with the second absorber through the solution heat exchanger and the second solution heat exchanger, the fourth generator is also provided with a refrigerant steam channel communicated with the third absorber, a high-temperature heat medium channel communicated with the outside, and a heated medium channel communicated with the outside to form a fifth-type absorption heat pump.
10. A fifth type absorption heat pump is characterized in that a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added in any fifth type absorption heat pump in items 1-2, a refrigerant steam channel of the second generator is communicated with a second condenser and adjusted to be communicated with the third absorber through the refrigerant steam channel of the second generator, a dilute solution pipeline of the third absorber is communicated with the fourth generator through the fourth solution pump and the fourth solution heat exchanger, a concentrated solution pipeline of the fourth generator is communicated with the third absorber through the fourth solution heat exchanger, a refrigerant steam channel of the fourth generator is communicated with the second condenser, a low-temperature heat medium channel of the fourth generator is communicated with the outside, and a cooling medium channel of the third absorber is communicated with the outside to form the fifth type absorption heat pump.
11. A fifth type absorption heat pump, wherein a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added in any one of the fifth type absorption heat pumps described in items 1-2, the absorber is communicated with the generator through a solution pump and a solution heat exchanger and is adjusted to have a dilute solution pipeline communicated with the third absorber through the solution heat exchanger, the third absorber is further communicated with the generator through a dilute solution pipeline communicated with the solution pump and the fourth solution heat exchanger, the generator is communicated with the second absorber through a solution heat exchanger and a second solution heat exchanger and is adjusted to have a concentrated solution pipeline communicated with the fourth generator through the fourth solution heat exchanger, the fourth generator is further communicated with the second absorber through a fourth solution pump, a solution heat exchanger and a second solution heat exchanger, the fourth generator is also provided with a refrigerant steam channel communicated with the third absorber, the fourth generator is also provided with a low-temperature heat medium channel communicated with the outside, and the third absorber is also provided with a cooling medium channel communicated with the outside to form a fifth-type absorption heat pump.
Description of the drawings:
fig. 1 is a diagram of a 1 st principal thermodynamic system of a fifth type absorption heat pump according to the present invention.
Fig. 2 is a 2 nd principle thermodynamic system diagram of a fifth type absorption heat pump according to the present invention.
Fig. 3 is a 3 rd principle thermodynamic system diagram of a fifth type absorption heat pump according to the present invention.
Fig. 4 is a diagram of a 4 th principle thermodynamic system of a fifth type absorption heat pump according to the present invention.
Fig. 5 is a diagram of a 5 th principle thermodynamic system of a fifth type absorption heat pump according to the present invention.
Fig. 6 is a 6 th principle thermodynamic system diagram of a fifth type absorption heat pump according to the present invention.
Fig. 7 is a 7 th principle thermodynamic system diagram of a fifth type absorption heat pump according to the present invention.
Fig. 8 is a diagram of an 8 th principle thermodynamic system of a fifth type absorption heat pump according to the present invention.
In the figure, 1-generator, 2-second generator, 3-third generator, 4-absorber, 5-second absorber, 6-condenser, 7-second condenser, 8-evaporator, 9-refrigerant liquid pump, 10-throttle valve, 11-solution pump, 12-second solution pump, 13-third solution pump, 14-solution heat exchanger, 15-second solution heat exchanger, 16-third solution heat exchanger, 17-fourth generator, 18-second throttle valve, 19-fourth solution pump, 20-fourth solution heat exchanger, 21-heat supplier, 22-third absorber.
Here, the following description is also given:
(1) the low-temperature heat medium, in the fifth absorption heat pump, is also called as waste heat medium.
(2) High-temperature heat medium, also called driving heat medium in the fifth type absorption heat pump.
(3) Cooling medium-a medium that carries away a low temperature heat load, the temperature being the lowest, such as ambient air or water.
The specific implementation mode is as follows:
the invention is described in detail below with reference to the figures and examples. In the description of the specific examples, structures and processes are not shown in detail, unless otherwise indicated, and are not described in detail herein for the sake of clarity and other embodiments.
The fifth type absorption heat pump shown in fig. 1 is realized by the following steps:
(1) structurally, the system mainly comprises a generator, a second generator, a third generator, an absorber, a second absorber, a condenser, a second condenser, an evaporator, a refrigerant liquid pump, a throttle valve, a solution pump, a second solution pump, a third solution pump, a solution heat exchanger, a second solution heat exchanger and a third solution heat exchanger; the absorber 4 is provided with a dilute solution pipeline which is communicated with the generator 1 through a solution pump 11 and a solution heat exchanger 14, the generator 1 is also provided with a concentrated solution pipeline which is communicated with the second absorber 5 through the solution heat exchanger 14 and a second solution heat exchanger 15, the second absorber 5 is also provided with a dilute solution pipeline which is communicated with the second generator 2 through a third solution heat exchanger 16, the second generator 2 is also provided with a concentrated solution pipeline which is communicated with the third generator 3 through a second solution pump 12 and a third solution heat exchanger 16, the third generator 3 is also provided with a concentrated solution pipeline which is communicated with the absorber 4 through a third solution pump 13 and a second solution heat exchanger 15, the generator 1 is also provided with a refrigerant vapor channel which is communicated with the condenser 6, the second generator 2 is also provided with a refrigerant vapor channel which is communicated with the second condenser 7, the third generator 3 is also provided with the second solution heat exchanger 5, the condenser 6 is also provided with an absorber liquid pipeline which is communicated with the evaporator 8 through the third generator 3 and a throttle valve, the second condenser 7 is also provided with a refrigerant liquid pipeline which is communicated with the evaporator 8 through a refrigerant liquid pump 9 and the second absorber 5, the evaporator 8 is also provided with a refrigerant steam channel which is communicated with the absorber 4, the generator 1 is also provided with a high-temperature heat medium channel which is communicated with the outside, the second generator 2 and the evaporator 8 are also provided with a low-temperature heat medium channel which is communicated with the outside respectively, the absorber 4 and the condenser 6 are also provided with a heated medium channel which is communicated with the outside, and the second condenser 7 is also provided with a cooling medium channel which is communicated with the outside.
(2) In the process, dilute solution in the absorber 4 enters the generator 1 through the solution pump 11 and the solution heat exchanger 14, high-temperature heat medium flows through the generator 1, heats the solution entering the generator 1 to release refrigerant steam and provide the refrigerant steam to the condenser 6, concentrated solution in the generator 1 enters the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15, absorbs the refrigerant steam and releases heat, dilute solution in the second absorber 5 enters the second generator 2 through the third solution heat exchanger 16, and low-temperature heat medium flows through the second generator 2, heats the solution entering the generator to release the refrigerant steam and provides the refrigerant steam to the second condenser 7; the concentrated solution of the second generator 2 enters the third generator 3 through the second solution pump 12 and the third solution heat exchanger 16, absorbs heat to release refrigerant vapor and is provided for the second absorber 5, and the concentrated solution of the third generator 3 enters the absorber 4 through the third solution pump 13 and the second solution heat exchanger 15, absorbs the refrigerant vapor and releases heat to the heated medium; the refrigerant steam of the condenser 6 releases heat to the heated medium to form refrigerant liquid, the refrigerant liquid of the condenser 6 flows through the third generator 3 and releases heat, and then the refrigerant liquid is throttled and depressurized by the throttle valve 10 to enter the evaporator 8; the refrigerant steam of the second condenser 7 releases heat to the cooling medium to form refrigerant liquid, and the refrigerant liquid of the second condenser 7 is pressurized by a refrigerant liquid pump 9, flows through the second absorber 5 to absorb heat and then enters the evaporator 8; the low-temperature heat medium flows through the evaporator 8, the refrigerant liquid entering the evaporator 8 is heated to form refrigerant steam, and the refrigerant steam released by the evaporator 8 enters the absorber 4 to form a fifth-type absorption heat pump.
The fifth type absorption heat pump shown in fig. 2 is realized by the following steps:
(1) structurally, in the fifth type absorption heat pump shown in fig. 1, a throttle valve 10 is eliminated, a condenser 6 is communicated with an evaporator 8 through a third generator 3 and the throttle valve 10 and adjusted to be that the condenser 6 is communicated with the evaporator 8 through the third generator 3, a fourth generator, a fourth solution pump, a fourth solution heat exchanger and a heat supply device are added, an absorber 4 is additionally provided with a dilute solution pipeline which is communicated with the fourth generator 17 through a fourth solution pump 19 and a fourth solution heat exchanger 20, the fourth generator 17 is also communicated with a second absorber 5 through a fourth solution heat exchanger 20, the generator 1 is communicated with the condenser 6 through a refrigerant steam channel adjusted to be that the generator 1 is communicated with the fourth generator 17 through a refrigerant steam channel, and then the fourth generator 17 is communicated with the evaporator 8 through the heat supply device 21 and the third generator 3, the fourth generator 17 is also communicated with the condenser 6 through a refrigerant steam passage, and the heater 21 is also communicated with the outside through a heated medium passage.
(2) In the process, refrigerant steam generated by the generator 1 is supplied to the fourth generator 17 as a driving heat medium, part of dilute solution in the absorber 4 enters the fourth generator 17 through the fourth solution pump 19 and the fourth solution heat exchanger 20, the refrigerant steam flows through the fourth generator 17, heats the solution entering the fourth generator 17 to release the refrigerant steam and is supplied to the condenser 6, and concentrated solution in the fourth generator 17 enters the second absorber 5 through the fourth solution heat exchanger 20; the refrigerant steam flowing through the fourth generator 17 releases heat to form refrigerant liquid, and the refrigerant liquid flows through the heat supply device 21 and the third generator 3 in sequence, gradually releases heat and reduces pressure, and then enters the evaporator 8 to form a fifth-type absorption heat pump.
The fifth type absorption heat pump shown in fig. 3 is realized by the following steps:
(1) structurally, in the fifth type absorption heat pump shown in fig. 1, a throttle valve 10 is eliminated, a refrigerant liquid pipeline of a third generator 3 is communicated with an evaporator 8 through the throttle valve 10 and adjusted to be communicated with the third generator 3 through the refrigerant liquid pipeline with the evaporator 8, a fourth generator, a fourth solution heat exchanger and a heat supplier are added, a dilute solution pipeline of an absorber 4 is communicated with the generator 1 through a solution pump 11 and a solution heat exchanger 14 and adjusted to be communicated with the absorber 4 through a dilute solution pipeline with the generator 1 through the solution pump 11, the solution heat exchanger 14 and the fourth solution heat exchanger 20, a concentrated solution pipeline of the generator 1 is communicated with a second absorber 5 through the solution heat exchanger 14 and a second solution heat exchanger 15 and adjusted to be communicated with the generator 1 through a concentrated solution pipeline with the fourth generator 17 through the fourth solution heat exchanger 20, and the fourth generator 17 is further communicated with the second absorber through the solution heat exchanger 14 and a second solution heat exchanger 15 and the solution heat exchanger 15 5, the generator 1 is communicated with the condenser 6 through a refrigerant steam channel, the generator 1 is adjusted to be communicated with the fourth generator 17 through the refrigerant steam channel, then the fourth generator 17 is communicated with the evaporator 8 through a heat supply device 21 and the third generator 3 through a refrigerant liquid pipeline, the fourth generator 17 is further communicated with the condenser 6 through the refrigerant steam channel, the heat supply device 21 is further communicated with the outside through a heated medium channel, and the fourth generator 17 is further communicated with the outside through a high-temperature heat medium channel.
(2) In the process, the high-temperature heat medium and the refrigerant steam generated by the generator 1 are supplied to a fourth generator 17 as a driving heat medium, the dilute solution of the absorber 4 enters the generator 1 through a solution pump 11, a solution heat exchanger 14 and a fourth solution heat exchanger 20, the concentrated solution of the generator 1 enters the fourth generator 17 through the fourth solution heat exchanger 20, the high-temperature heat medium and the refrigerant steam respectively flow through the fourth generator 17, heat the solution entering the fourth generator 17 to release the refrigerant steam and supply the refrigerant steam to the condenser 6, and the concentrated solution of the fourth generator 17 enters the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15; the refrigerant steam flowing through the fourth generator 17 releases heat to form refrigerant liquid, and the refrigerant liquid flows through the heat supply device 21 and the third generator 3 in sequence, gradually releases heat and reduces pressure, and then enters the evaporator 8 to form a fifth-type absorption heat pump.
The fifth type absorption heat pump shown in fig. 4 is realized by the following steps:
(1) structurally, in the fifth type absorption heat pump shown in fig. 1, a fourth generator, a second throttle valve, a fourth solution pump, a fourth solution heat exchanger and a heat supply device are added, wherein a dilute solution pipeline of an absorber 4 is communicated with a generator 1 through a solution pump 11 and a solution heat exchanger 14, the absorber 4 is adjusted to be communicated with a dilute solution pipeline through the solution pump 11 and the solution heat exchanger 14 and communicated with a fourth generator 17, a concentrated solution pipeline of the fourth generator 17 is communicated with the generator 1 through a fourth solution pump 19 and the fourth solution heat exchanger 20, a concentrated solution pipeline of the generator 1 is communicated with a second absorber 5 through the solution heat exchanger 14 and a second solution heat exchanger 15, the generator 1 is adjusted to be communicated with the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15, a concentrated solution pipeline of the generator 1 is adjusted to be communicated with a condenser 6 through a refrigerant steam channel, and the generator 1 is adjusted to be communicated with the refrigerant steam through the fourth solution heat exchanger 20, the solution heat exchanger 14 and the second solution heat exchanger After the channel is communicated with the fourth generator 17, the fourth generator 17 is communicated with the evaporator 8 through a refrigerant liquid pipeline via a heat supplier 21, the third generator 3 and a second throttle valve 18, the fourth generator 17 is also communicated with the condenser 6 through a refrigerant steam channel, and the heat supplier 21 is also communicated with the outside through a heated medium channel.
(2) In the process, refrigerant steam generated by the generator 1 is supplied to a fourth generator 17 as a driving heat medium, dilute solution in the absorber 4 enters the fourth generator 17 through a solution pump 11 and a solution heat exchanger 14, the refrigerant steam flows through the fourth generator 17, heats the solution entering the fourth generator 17 to release the refrigerant steam and supply the refrigerant steam to the condenser 6, concentrated solution in the fourth generator 17 enters the generator 1 through a fourth solution pump 19 and a fourth solution heat exchanger 20, and concentrated solution in the generator 1 enters the second absorber 5 through the fourth solution heat exchanger 20, the solution heat exchanger 14 and a second solution heat exchanger 15; the refrigerant steam flowing through the fourth generator 17 releases heat to form refrigerant liquid, the refrigerant liquid sequentially flows through the heat supply device 21 and the third generator 3 and gradually releases heat, and then enters the evaporator 8 through the second throttling valve 18 for throttling and pressure reduction to form a fifth-type absorption heat pump.
The fifth type absorption heat pump shown in fig. 5 is realized by the following steps:
(1) structurally, in a fifth type absorption heat pump shown in fig. 1, a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added, a refrigerant vapor passage of the generator 1 is communicated with the condenser 6 and adjusted to be that the generator 1 is communicated with a refrigerant vapor passage and the third absorber 22, the third absorber 22 is also communicated with a dilute solution pipeline through a fourth solution pump 19 and a fourth solution heat exchanger 20 and a fourth generator 17, the fourth generator 17 is also communicated with the third absorber 22 through a fourth solution heat exchanger 20, the fourth generator 17 is also communicated with the condenser 6 through a refrigerant vapor passage, the fourth generator 17 is also communicated with the outside through a high-temperature heat medium passage, and the third absorber 22 is also communicated with the outside through a heated medium passage.
(2) In the process, refrigerant steam generated by the generator 1 enters the third absorber 22, dilute solution of the third absorber 22 enters the fourth generator 17 through the fourth solution pump 19 and the fourth solution heat exchanger 20, high-temperature heat medium flows through the fourth generator 17, heats the solution entering the fourth generator 17 to release the refrigerant steam and provide the refrigerant steam to the condenser 6, and concentrated solution of the fourth generator 17 enters the third absorber 22 through the fourth solution heat exchanger 20, absorbs the refrigerant steam and releases heat to the heated medium to form the fifth-type absorption heat pump.
The fifth type absorption heat pump shown in fig. 6 is realized by the following steps:
(1) structurally, in the fifth type absorption heat pump shown in fig. 1, a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added, a dilute solution pipeline of the absorber 4 is communicated with the generator 1 through the solution pump 11 and the solution heat exchanger 14, a dilute solution pipeline of the absorber 4 is communicated with a third absorber 22 through the solution pump 11 and the solution heat exchanger 14, a dilute solution pipeline of the third absorber 22 is communicated with the generator 1 through a fourth solution pump 19 and a fourth solution heat exchanger 20, a concentrated solution pipeline of the generator 1 is communicated with the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15, a concentrated solution pipeline of the generator 1 is communicated with the fourth generator 17 through the fourth solution heat exchanger 20, and a concentrated solution pipeline of the fourth generator 17 is communicated with the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15, the fourth generator 17 also has a refrigerant vapor passage communicating with the third absorber 22, the fourth generator 17 also has a high-temperature heat medium passage communicating with the outside, and the third absorber 22 also has a heated medium passage communicating with the outside.
(2) In the process, the dilute solution in the absorber 4 enters the third absorber 22 through the solution pump 11 and the solution heat exchanger 14, absorbs refrigerant vapor and releases heat to the heated medium, the dilute solution in the third absorber 22 enters the generator 1 through the fourth solution pump 19 and the fourth solution heat exchanger 20, the concentrated solution in the generator 1 enters the fourth generator 17 through the fourth solution heat exchanger 20, the high-temperature heat medium flows through the fourth generator 17, heats the solution entering the generator to release the refrigerant vapor and is provided for the third absorber 22, and the concentrated solution in the fourth generator 17 enters the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15 to form the fifth-type absorption heat pump.
The fifth type absorption heat pump shown in fig. 7 is realized by the following steps:
(1) structurally, in the fifth type absorption heat pump shown in fig. 1, a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added, a refrigerant vapor passage of the second generator 2 is communicated with the second condenser 7 and adjusted to be communicated with the third absorber 22 through the refrigerant vapor passage of the second generator 2, a dilute solution pipeline of the third absorber 22 is communicated with the fourth generator 17 through a fourth solution pump 19 and a fourth solution heat exchanger 20, a concentrated solution pipeline of the fourth generator 17 is communicated with the third absorber 22 through the fourth solution heat exchanger 20, a refrigerant vapor passage of the fourth generator 17 is communicated with the second condenser 7, a low-temperature heat medium passage of the fourth generator 17 is communicated with the outside, and a cooling medium passage of the third absorber 22 is communicated with the outside.
(2) In the process, refrigerant vapor generated by the second generator 2 enters the third absorber 22, a dilute solution of the third absorber 22 enters the fourth generator 17 through the fourth solution pump 19 and the fourth solution heat exchanger 20, a low-temperature heat medium flows through the fourth generator 17, heats the solution entering the fourth generator 17 to release the refrigerant vapor and provide the refrigerant vapor to the second condenser 7, and a concentrated solution of the fourth generator 17 enters the third absorber 22 through the fourth solution heat exchanger 20, absorbs the refrigerant vapor and releases heat to a cooling medium, so that a fifth-type absorption heat pump is formed.
The fifth type absorption heat pump shown in fig. 8 is realized by:
(1) structurally, in the fifth type absorption heat pump shown in fig. 1, a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added, a dilute solution pipeline of the absorber 4 is communicated with the generator 1 through the solution pump 11 and the solution heat exchanger 14, a dilute solution pipeline of the absorber 4 is communicated with a third absorber 22 through the solution heat exchanger 14, a dilute solution pipeline of the third absorber 22 is communicated with the generator 1 through the solution pump 11 and the fourth solution heat exchanger 20, a concentrated solution pipeline of the generator 1 is communicated with the second absorber 5 through the solution heat exchanger 14 and the second solution heat exchanger 15, a concentrated solution pipeline of the generator 1 is communicated with the fourth generator 17 through the fourth solution heat exchanger 20, and a concentrated solution pipeline of the fourth generator 17 is communicated with the second absorber 5 through the fourth solution pump 19, the solution heat exchanger 14 and the second solution heat exchanger 15, the fourth generator 17 is also communicated with the third absorber 22 through a refrigerant vapor passage, the fourth generator 17 is also communicated with the outside through a low-temperature heat medium passage, and the third absorber 22 is also communicated with the outside through a cooling medium passage.
(2) In the flow, the dilute solution in the absorber 4 enters the third absorber 22 through the solution heat exchanger 14, absorbs refrigerant vapor and releases heat to the cooling medium, and the dilute solution in the third absorber 22 enters the generator 1 through the solution pump 11 and the fourth solution heat exchanger 20; the concentrated solution of the generator 1 enters the fourth generator 17 through the fourth solution heat exchanger 20, the low-temperature heat medium flows through the fourth generator 17, heats the solution entering the fourth generator 17 to release refrigerant vapor and is provided for the third absorber 22, and the concentrated solution of the fourth generator 17 enters the second absorber 5 through the fourth solution pump 19, the solution heat exchanger 14 and the second solution heat exchanger 15 to form a fifth type absorption heat pump.
The effect that the technology of the invention can realize-the fifth type absorption heat pump provided by the invention has the following effects and advantages:
(1) the new idea, new concept and new technology of temperature difference utilization are provided, and the further development and application of the absorption heat pump technology are promoted.
(2) The temperature of the high-temperature refrigerant liquid is reduced to improve the concentration of the solution, the low-temperature refrigerant liquid is preheated, the negative influence on the temperature difference utilization degree due to too small latent heat of the refrigerant medium is reduced, and the performance index and the waste heat utilization rate of the absorption heat pump are obviously improved.
(3) The negative influence of the undersize latent heat of the refrigerant medium on the efficient utilization of heat energy is eliminated, the selection range of the working medium is expanded, and the development of the fifth-class absorption heat pump technology is facilitated.
(4) A plurality of specific technical schemes are provided, so that the method can cope with a plurality of different actual conditions and has a wider application range.
(5) The type of the absorption heat pump is enriched, the application range of the absorption heat pump is expanded, and the full utilization of the temperature difference is realized by better adopting the absorption heat pump.
Claims (11)
1. The fifth type absorption heat pump mainly comprises a generator, a second generator, a third generator, an absorber, a second absorber, a condenser, a second condenser, an evaporator, a refrigerant liquid pump, a throttle valve, a solution pump, a second solution pump, a third solution pump, a solution heat exchanger, a second solution heat exchanger and a third solution heat exchanger; the absorber (4) is provided with a dilute solution pipeline which is communicated with the generator (1) through a solution pump (11) and a solution heat exchanger (14), the generator (1) is also provided with a concentrated solution pipeline which is communicated with the second absorber (5) through the solution heat exchanger (14) and a second solution heat exchanger (15), the second absorber (5) is also provided with a dilute solution pipeline which is communicated with the second generator (2) through a third solution heat exchanger (16), the second generator (2) is also provided with a concentrated solution pipeline which is communicated with the third generator (3) through a second solution pump (12) and a third solution heat exchanger (16), the third generator (3) is also provided with a concentrated solution pipeline which is communicated with the absorber (4) through a third solution pump (13) and the second solution heat exchanger (15), the generator (1) is also provided with a refrigerant steam channel which is communicated with the condenser (6), the second generator (2) is also provided with a refrigerant steam channel which is communicated with the second condenser (7), the third generator (3) is also provided with a refrigerant steam channel communicated with the second absorber (5), the condenser (6) is also provided with a refrigerant liquid pipeline communicated with the evaporator (8) through the third generator (3) and the throttle valve (10), the second condenser (7) is also provided with a refrigerant liquid pipeline communicated with the evaporator (8) through a refrigerant liquid pump (9) and the second absorber (5), the evaporator (8) is also provided with a refrigerant steam channel communicated with the absorber (4), the generator (1) is also provided with a high-temperature heat medium channel communicated with the outside, the second generator (2) and the evaporator (8) are also respectively provided with a low-temperature heat medium channel communicated with the outside, the absorber (4) and the condenser (6) are also provided with a heated medium channel communicated with the outside, and the second condenser (7) is also provided with a cooling medium channel communicated with the outside to form a fifth-class absorption heat pump.
2. A fifth type absorption heat pump, which is the fifth type absorption heat pump in claim 1, wherein a throttle valve is cancelled, and a refrigerant liquid pipeline of a condenser (6) is communicated with an evaporator (8) through a third generator (3) and a throttle valve (10) and is adjusted to be communicated with the evaporator (8) through the third generator (3) so as to form the fifth type absorption heat pump.
3. A fifth type absorption heat pump is characterized in that a fourth generator, a second throttling valve, a fourth solution pump, a fourth solution heat exchanger and a heat supply device are added in the fifth type absorption heat pump of claim 1, a dilute solution pipeline is additionally arranged on an absorber (4) and is communicated with the fourth generator (17) through a fourth solution pump (19) and the fourth solution heat exchanger (20), the fourth generator (17) and a concentrated solution pipeline are communicated with a second absorber (5) through the fourth solution heat exchanger (20), a refrigerant steam channel of the generator (1) is communicated with a condenser (6) and adjusted to be communicated with the fourth generator (17), a refrigerant steam channel of the fourth generator (17) is communicated with an evaporator (8) through the heat supply device (21), the third generator (3) and the second throttling valve (18), and the refrigerant steam channel of the fourth generator (17) is communicated with the condenser (6), the heat supplier (21) is also provided with a heated medium channel which is communicated with the outside to form a fifth-class absorption heat pump.
4. A fifth type absorption heat pump is characterized in that a fourth generator, a second throttle valve, a fourth solution heat exchanger and a heat supplier are added in the fifth type absorption heat pump of claim 1, a dilute solution pipeline of an absorber (4) is communicated with the generator (1) through a solution pump (11) and a solution heat exchanger (14) and is adjusted to be that the absorber (4) is communicated with the generator (1) through a dilute solution pipeline through the solution pump (11), the solution heat exchanger (14) and the fourth solution heat exchanger (20), a concentrated solution pipeline of the generator (1) is communicated with a second absorber (5) through the solution heat exchanger (14) and a second solution heat exchanger (15) and is adjusted to be that the generator (1) is communicated with a fourth generator (17) through the fourth solution heat exchanger (20), and the fourth generator (17) is further communicated with the second absorber (5) through the solution heat exchanger (14) and the second solution heat exchanger (15), after the generator (1) is communicated with the condenser (6) through a refrigerant steam channel, the generator (1) is adjusted to be communicated with the fourth generator (17) through the refrigerant steam channel, then the fourth generator (17) is communicated with the evaporator (8) through a heat supplier (21), a third generator (3) and a second throttle valve (18) through a refrigerant liquid pipeline, the fourth generator (17) is also communicated with the condenser (6) through the refrigerant steam channel, and the heat supplier (21) is also communicated with the outside through a heated medium channel to form a fifth-type absorption heat pump.
5. A fifth type absorption heat pump, which is characterized in that a fourth generator, a second throttle valve, a fourth solution pump, a fourth solution heat exchanger and a heat supplier are added in the fifth type absorption heat pump of claim 1, wherein a dilute solution pipeline of an absorber (4) is communicated with a generator (1) through a solution pump (11) and a solution heat exchanger (14) and is adjusted to be communicated with the generator (1) through the solution pump (11) and the solution heat exchanger (14), a dilute solution pipeline of the absorber (4) is communicated with a fourth generator (17) through the solution pump (11) and the solution heat exchanger (14), the fourth generator (17) is further communicated with the generator (1) through a concentrated solution pipeline of the generator (1) through a fourth solution pump (19) and the fourth solution heat exchanger (20), and a concentrated solution pipeline of the generator (1) is communicated with a second absorber (5) through the solution heat exchanger (14) and the second solution heat exchanger (15) and is adjusted to be communicated with the generator (1) through a concentrated solution pipeline of the fourth, The solution heat exchanger (14) and the second solution heat exchanger (15) are communicated with the second absorber (5), a refrigerant steam channel of the generator (1) is communicated with the condenser (6) and adjusted to be communicated with the fourth generator (17), then a refrigerant liquid pipeline of the fourth generator (17) is communicated with the evaporator (8) through a heat supplier (21), the third generator (3) and the second throttle valve (18), the fourth generator (17) is also communicated with the condenser (6) through the refrigerant steam channel, and the heat supplier (21) is also communicated with the outside through a heated medium channel to form a fifth-type absorption heat pump.
6. The fifth type absorption heat pump is characterized in that in any one of the fifth type absorption heat pumps in claims 3-5, a high-temperature heat medium channel is additionally arranged on a fourth generator (17) and is communicated with the outside to form the fifth type absorption heat pump.
7. A fifth type absorption heat pump is characterized in that in any fifth type absorption heat pump of claims 3-6, a throttle valve and a second throttle valve are omitted, a refrigerant liquid pipeline of a third generator (3) is communicated with an evaporator (8) through a throttle valve (10) and adjusted to be communicated with the evaporator (8) through the refrigerant liquid pipeline of the third generator (3), and the refrigerant liquid pipeline of the third generator (3) is communicated with the evaporator (8) through a second throttle valve (18) and adjusted to be communicated with the evaporator (8) through the refrigerant liquid pipeline of the third generator (3), so that the fifth type absorption heat pump is formed.
8. A fifth type absorption heat pump, in any one of the fifth type absorption heat pumps of claims 1-2, a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added, the generator (1) is adjusted to be communicated with the condenser (6) through a refrigerant steam channel, the generator (1) is adjusted to be communicated with the third absorber (22) through the refrigerant steam channel, the third absorber (22) is also communicated with the fourth generator (17) through a fourth solution pump (19) and a fourth solution heat exchanger (20), the fourth generator (17) is also communicated with the third absorber (22) through a concentrated solution pipeline, the fourth generator (17) is also communicated with the condenser (6) through the refrigerant steam channel, the fourth generator (17) is also communicated with the outside through a high-temperature heat medium channel, the third absorber (22) is also communicated with the outside through a heated medium channel, forming a fifth type absorption heat pump.
9. A fifth type absorption heat pump, which is characterized in that a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added in any fifth type absorption heat pump of claims 1-2, the absorber (4) is communicated with the generator (1) through a dilute solution pipeline by a solution pump (11) and a solution heat exchanger (14) and is adjusted to be that the absorber (4) is communicated with the third absorber (22) through the solution pump (11) and the solution heat exchanger (14), the third absorber (22) is further communicated with the generator (1) through a dilute solution pipeline by a fourth solution pump (19) and a fourth solution heat exchanger (20), the generator (1) is communicated with the second absorber (5) through the solution heat exchanger (14) and the second solution heat exchanger (15) and is adjusted to be that the generator (1) is communicated with the fourth generator (17) through the fourth solution heat exchanger (20), the fourth generator (17) is communicated with the second absorber (5) through a concentrated solution pipeline via a solution heat exchanger (14) and a second solution heat exchanger (15), the fourth generator (17) is also communicated with a third absorber (22) through a refrigerant steam channel, the fourth generator (17) is also communicated with the outside through a high-temperature heat medium channel, and the third absorber (22) is also communicated with the outside through a heated medium channel to form a fifth-type absorption heat pump.
10. A fifth type absorption heat pump, in any one of the fifth type absorption heat pumps in claims 1-2, a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added, the second generator (2) is communicated with a second condenser (7) through a refrigerant steam channel and is adjusted to be communicated with the third absorber (22) through the refrigerant steam channel of the second generator (2), the third absorber (22) is also communicated with the fourth generator (17) through a dilute solution pipeline through a fourth solution pump (19) and a fourth solution heat exchanger (20), the fourth generator (17) is also communicated with the third absorber (22) through a concentrated solution pipeline through the fourth solution heat exchanger (20), the fourth generator (17) is also communicated with the second condenser (7) through the refrigerant steam channel, and the fourth generator (17) is also communicated with the outside through a low-temperature heat medium channel, the third absorber (22) is also provided with a cooling medium channel which is communicated with the outside to form a fifth type absorption heat pump.
11. A fifth type absorption heat pump, which is characterized in that a fourth generator, a third absorber, a fourth solution pump and a fourth solution heat exchanger are added in any fifth type absorption heat pump of claims 1-2, the absorber (4) is communicated with the generator (1) through a dilute solution pipeline by a solution pump (11) and a solution heat exchanger (14) and is adjusted to be that the absorber (4) is communicated with the third absorber (22) through a solution heat exchanger (14), the third absorber (22) is further communicated with the generator (1) through a dilute solution pipeline by a solution pump (11) and a fourth solution heat exchanger (20), the generator (1) is communicated with the second absorber (5) through a solution heat exchanger (14) and a second solution heat exchanger (15) and is adjusted to be that the generator (1) is communicated with the fourth generator (17) through a concentrated solution pipeline by a fourth solution heat exchanger (20), the fourth generator (17) is communicated with the second absorber (5) through a concentrated solution pipeline through a fourth solution pump (19), a solution heat exchanger (14) and a second solution heat exchanger (15), the fourth generator (17) is also communicated with a refrigerant steam channel and a third absorber (22), the fourth generator (17) is also communicated with the outside through a low-temperature heat medium channel, and the third absorber (22) is also communicated with the outside through a cooling medium channel to form a fifth-type absorption heat pump.
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