Fourth-class absorption heat pump and steam generation system based on absorption heat pump

Abstract

The invention provides a fourth-class absorption heat pump, and belongs to the technical field of heat pumps. The low-temperature generator is communicated with the high-temperature generator through the solution pump, the solution heat exchanger and the second solution heat exchanger, the high-temperature generator is communicated with the absorber through the second solution heat exchanger, the absorber is communicated with the low-temperature generator through the solution heat exchanger, the low-temperature generator is communicated with the low-temperature condenser, and the low-temperature condenser is communicated with the evaporator through the low-pressure pump. The high-temperature generator is communicated with the high-temperature condenser, the high-temperature condenser is communicated with the steam separation chamber through a spraying pipe, the steam separation chamber is communicated with a high-pressure steam inlet of the ejector and communicated with the evaporator through the low-temperature generator and the throttling valve, and the evaporator is communicated with a low-pressure steam inlet of the ejector. The high-temperature generator is provided with a high-temperature heat medium channel, the absorber and the high-temperature condenser are communicated with the outside through heated media, the low-temperature condenser is communicated with the outside through a cooling medium channel, the evaporator is communicated with the outside through a low-temperature heat medium channel, and the fourth-class absorption heat pump is formed.

Description

Technical fields:

[0001] This invention belongs to the field of refrigeration and heat pump technology. Background technology:

[0002] Using heat pump technology to provide heating and steam is an important means of achieving efficient and high-value energy utilization. In practical applications, the operating parameters, performance index, manufacturing cost, adaptability, and utilization level of heat resources of heat pumps need to be comprehensively considered. In particular, making full use of temperature differences and high-grade heat loads is the key to obtaining a reasonable performance index for heat pumps.

[0003] In the fourth type of absorption heat pump system, which is good at providing high-grade heat loads to external users, the condensate discharged from the high-temperature condenser contains a lot of high-grade heat energy. Therefore, it is worthwhile to study how to make full use of its role and improve the heating parameters and performance index. In order to provide steam with higher parameters to external users, it is necessary to overcome the constraints of the properties of the solution, refrigerant medium and heat source.

[0004] An ejector is a pressure-boosting component that effectively utilizes high-temperature heat resources. It has the advantages of simple structure, reliable operation, low investment and long service life. In addition, compared with compressors, ejectors are more adaptable to the compression of wet steam.

[0005] Based on the principles of simple, proactive, and efficient energy utilization for heating, this invention proposes a fourth type of absorption heat pump and a steam generation system based on the absorption heat pump, which integrates technologies, has a reasonable process, a simple structure, and achieves rationalized performance index. Summary of the Invention:

[0006] The main objective of this invention is to provide a fourth type of absorption heat pump and a steam generation system based on the absorption heat pump. The specific contents of the invention are described in detail below:

[0007] 1. The fourth type of absorption heat pump mainly consists of a low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator, an absorber, a low-temperature condenser, a low-pressure pump, an evaporator, a high-temperature condenser, a nozzle, a steam distribution chamber, an ejector, and a throttling valve. The low-temperature generator has a concentrated solution pipeline connected to the high-temperature generator via the solution pump, the solution heat exchanger, and the second solution heat exchanger. The high-temperature generator also has a concentrated solution pipeline connected to the absorber via the second solution heat exchanger. The absorber also has a dilute solution pipeline connected to the low-temperature generator via the solution heat exchanger. The low-temperature generator also has a refrigerant vapor channel connected to the low-temperature condenser. The low-temperature condenser also has a condensate pipeline connected to the evaporator via the low-pressure pump. The generator also has a refrigerant vapor passage connected to the high-temperature condenser. The high-temperature condenser also has a condensate pipeline connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector. The steam distribution chamber also has a condensate pipeline connected to the evaporator via a low-temperature generator and a throttling valve. The evaporator also has a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector. The ejector also has a medium-pressure refrigerant vapor passage connected to the absorber. The high-temperature generator also has a high-temperature heat medium passage connected to the outside. The absorber and the high-temperature condenser also have heated medium passages connected to the outside. The low-temperature condenser also has a cooling medium passage connected to the outside. The evaporator also has a low-temperature heat medium passage connected to the outside, forming a fourth type of absorption heat pump.

[0008] 2. The fourth type of absorption heat pump is an improvement upon the fourth type of absorption heat pump described in item 1, wherein the low-temperature generator is connected to the high-temperature generator via a concentrated solution pipeline through a solution pump, a solution heat exchanger, and a second solution heat exchanger, and the low-temperature generator is connected to the absorber via a concentrated solution pipeline through a second solution pump and a second solution heat exchanger, and the absorber is connected to the high-temperature generator via a dilute solution pipeline through a solution pump and a solution heat exchanger. The high-temperature generator is also connected to the absorber via a concentrated solution pipeline through a second solution heat exchanger, and the high-temperature generator is connected to the low-temperature generator via a concentrated solution pipeline through a solution heat exchanger and a second solution heat exchanger, thus forming the fourth type of absorption heat pump.

[0009] 3. The fourth type of absorption heat pump is the fourth type of absorption heat pump described in item 1, wherein the low-temperature generator is connected to the high-temperature generator via a concentrated solution pipeline through a solution pump, a solution heat exchanger, and a second solution heat exchanger. The low-temperature generator is then connected to the absorber via a concentrated solution pipeline through a second solution pump and a solution heat exchanger. The absorber also has a dilute solution pipeline connected to the second absorber via a solution heat exchanger. The second absorber further has a dilute solution pipeline connected to the high-temperature generator via a solution pump and a second solution heat exchanger. The high-temperature generator is then connected to the absorber via a concentrated solution pipeline through a second solution heat exchanger. The high-temperature generator is then connected to the low-temperature generator via a concentrated solution pipeline through a second solution heat exchanger. The low-temperature condenser and low-pressure pump are eliminated. The low-temperature condenser and its external cooling medium channel and the condensate pipeline connected to the evaporator via the low-pressure pump are also eliminated. The low-temperature generator is now connected to the low-temperature condenser via a refrigerant vapor channel. The low-temperature generator is then connected to the second absorber via a refrigerant vapor channel. The second absorber also has a cooling medium channel connected to the outside, thus forming the fourth type of absorption heat pump.

[0010] 4. The fourth type of absorption heat pump is any of the fourth type of absorption heat pumps described in items 1-3, with the addition of a compressor, and the connection between the refrigerant vapor channel of the high-temperature generator and the high-temperature condenser is adjusted so that the refrigerant vapor channel of the high-temperature generator is connected to the high-temperature condenser via the compressor, thus forming the fourth type of absorption heat pump.

[0011] 5. The fourth type of absorption heat pump is formed by adding a compressor to any of the fourth type of absorption heat pumps described in items 1-3, and adjusting the connection between the ejector and the absorber to have a medium-pressure refrigerant vapor channel, which is connected to the absorber via the compressor, thus forming the fourth type of absorption heat pump.

[0012] 6. The fourth type of absorption heat pump is formed by adding a two-phase expander and replacing the throttling valve to any of the fourth type of absorption heat pumps described in items 1-3 to form a fourth type of absorption heat pump.

[0013] 7. The fourth type of absorption heat pump is formed by adding a new nozzle and replacing the throttle valve in any of the fourth type of absorption heat pumps described in items 1-3 to form a fourth type of absorption heat pump.

[0014] 8. A steam generation system based on an absorption heat pump is formed by adding a second ejector to any of the fourth type of absorption heat pumps described in items 1-3. The second ejector has an external working steam channel connected to its high-pressure steam inlet. The heating medium channels connecting the absorber and the high-temperature condenser to the outside are adjusted so that the external heating medium channels connect the absorber and the high-temperature condenser and then connect to the low-pressure steam inlet of the second ejector. The second ejector also has a user steam channel connected to the outside, thus forming a steam generation system based on an absorption heat pump.

[0015] 9. A steam generation system based on an absorption heat pump is formed by adding a second ejector, a high-pressure pump, and a steam generator to any of the fourth-type absorption heat pumps described in items 1-3. An external liquid medium channel is connected to the steam generator via the high-pressure pump. The steam generator also has a steam channel connected to the high-pressure steam inlet of the second ejector. The heating medium channels connecting the absorber and the high-temperature condenser to the outside are adjusted so that the external heating medium channels connecting the absorber and the high-temperature condenser are connected to the low-pressure steam inlet of the second ejector. The second ejector also has a user steam channel connected to the outside. The steam generator also has a high-temperature heat medium channel connected to the outside, thus forming a steam generation system based on an absorption heat pump.

[0016] 10. A steam generation system based on an absorption heat pump is formed by adding a compressor to any of the steam generation systems based on an absorption heat pump described in items 8-9, and adjusting the connection between the refrigerant vapor channel of the high-temperature generator and the high-temperature condenser to be such that the refrigerant vapor channel of the high-temperature generator is connected to the high-temperature condenser via the compressor, thereby forming a steam generation system based on an absorption heat pump.

[0017] 11. A steam generation system based on an absorption heat pump is formed by adding a compressor to any of the steam generation systems based on an absorption heat pump described in items 8-9, and adjusting the connection between the ejector and the absorber via a medium-pressure refrigerant vapor channel to connect the ejector and the absorber via a compressor, thereby forming a steam generation system based on an absorption heat pump.

[0018] 12. A steam generation system based on an absorption heat pump is formed by adding a two-phase expander and replacing the throttling valve to any of the steam generation systems based on an absorption heat pump described in items 8-9, thereby forming a steam generation system based on an absorption heat pump.

[0019] 13. A steam generation system based on an absorption heat pump is formed by adding a new nozzle and replacing the throttle valve to any of the steam generation systems based on an absorption heat pump described in items 8-9, thereby forming a steam generation system based on an absorption heat pump. Attached image description:

[0020] Figure 1 This is a schematic diagram of the first structure and process of the fourth type of absorption heat pump provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the second structure and process of the fourth type of absorption heat pump provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the third structure and process of the fourth type of absorption heat pump provided by the present invention.

[0023] Figure 4This is a schematic diagram of the fourth type of absorption heat pump structure and process provided by the present invention.

[0024] Figure 5 This is a schematic diagram of the fifth structure and process of the fourth type of absorption heat pump provided by the present invention.

[0025] Figure 6 This is a schematic diagram of the sixth structure and process of the fourth type of absorption heat pump provided by the present invention.

[0026] Figure 7 This is a schematic diagram of the seventh structure and process of the fourth type of absorption heat pump provided by the present invention.

[0027] Figure 8 This is a schematic diagram of the first structure and process of a steam generation system based on an absorption heat pump provided by the present invention.

[0028] Figure 9 This is a schematic diagram of the second structure and process of a steam generation system based on an absorption heat pump provided by the present invention.

[0029] In the diagram, 1-low temperature generator, 2-solution pump, 3-solution heat exchanger, 4-second solution heat exchanger, 5-high temperature generator, 6-absorber, 7-low temperature condenser, 8-low pressure pump, 9-evaporator, 10-high temperature condenser, 11-nozzle, 12-steam chamber, 13-ejector, 14-throttle valve, 15-second solution pump, 16-second absorber, 17-second ejector, 18-high pressure pump, 19-steam generator, A-compressor, B-two-phase expander, C-newly added nozzle. Detailed implementation method:

[0030] First, it should be noted that the structure and process are not repeated unless necessary; obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0031] Figure 1 The fourth type of absorption heat pump shown is implemented as follows:

[0032] (1) Structurally, it mainly consists of a low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator, an absorber, a low-temperature condenser, a low-pressure pump, an evaporator, a high-temperature condenser, a nozzle, a steam distribution chamber, an ejector, and a throttling valve; the low-temperature generator 1 has a concentrated solution pipeline connected to the high-temperature generator 5 via the solution pump 2, the solution heat exchanger 3, and the second solution heat exchanger 4; the high-temperature generator 5 also has a concentrated solution pipeline connected to the absorber 6 via the second solution heat exchanger 4; the absorber 6 also has a dilute solution pipeline connected to the low-temperature generator 1 via the solution heat exchanger 3; the low-temperature generator 1 also has a refrigerant vapor channel connected to the low-temperature condenser 7; the low-temperature condenser 7 also has a condensate pipeline connected to the evaporator 9 via the low-pressure pump 8; the high-temperature generator 5... There is also a refrigerant vapor passage connected to the high-temperature condenser 10. The high-temperature condenser 10 also has a condensate pipeline connected to the steam distribution chamber 12 via the nozzle 11. The steam distribution chamber 12 also has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector 13. The steam distribution chamber 12 also has a condensate pipeline connected to the evaporator 9 via the low-temperature generator 1 and the throttle valve 14. The evaporator 9 also has a refrigerant vapor passage connected to the low-pressure steam inlet of the ejector 13. The ejector 13 also has a medium-pressure refrigerant vapor passage connected to the absorber 6. The high-temperature generator 5 also has a high-temperature heat medium passage connected to the outside. The absorber 6 and the high-temperature condenser 10 also have heated medium passages connected to the outside. The low-temperature condenser 7 also has a cooling medium passage connected to the outside. The evaporator 9 also has a low-temperature heat medium passage connected to the outside.

[0033] (2) In terms of process, the concentrated solution from the low-temperature generator 1 enters the high-temperature generator 5 via the solution pump 2, solution heat exchanger 3, and second solution heat exchanger 4. The high-temperature heat medium flows through the high-temperature generator 5, heating the solution inside and releasing refrigerant vapor, which is then supplied to the high-temperature condenser 10. The concentrated solution from the high-temperature generator 5 enters the absorber 6 via the second solution heat exchanger 4, absorbing refrigerant vapor and releasing heat to the heated medium. The dilute solution from the absorber 6 enters the low-temperature generator 1 via the solution heat exchanger 3. The condensate flows through the low-temperature generator 1, heating the solution inside and releasing refrigerant vapor, which is then supplied to the low-temperature condenser 7. The refrigerant vapor in the low-temperature condenser 7 releases heat to the cooling medium to form condensate. The condensate in the low-temperature condenser 7 is pressurized by the low-pressure pump 8 and enters the evaporator 9 to absorb heat and vaporize. The refrigerant vapor entering the high-temperature condenser 10 releases heat to the heated medium to form condensate. The high-temperature condenser 10 discharges the condensate. The condensate flows through nozzle 11, where its pressure is reduced and its speed is increased, before entering steam distribution chamber 12. The refrigerant vapor discharged from steam distribution chamber 12 is supplied to ejector 13 as working steam. The condensate discharged from steam distribution chamber 12 flows through low-temperature generator 1 and releases heat, flows through throttle valve 14 where its pressure and temperature are reduced, and then enters evaporator 9 where it absorbs heat and vaporizes. The working steam enters ejector 13, flows through nozzles where its pressure is reduced and its speed is increased, forming a low-pressure system. The refrigerant vapor discharged from evaporator 9 is drawn into the low-pressure zone of ejector 13. The two steam streams mix and then flow through diffuser where their speed is reduced and their pressure is increased, forming medium-pressure refrigerant vapor which is supplied to absorber 6. The high-temperature heat medium provides a high-temperature driving heat load through high-temperature generator 5. The heated medium obtains a medium-temperature heat load through absorber 6 and high-temperature condenser 10. The cooling medium carries away the discharged cooling heat load through low-temperature condenser 7. The low-temperature heat medium provides a low-temperature heat load through evaporator 9, forming a fourth type of absorption heat pump.

[0034] Figure 2 The fourth type of absorption heat pump shown is implemented as follows:

[0035] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, the low-temperature generator 1 is connected to the high-temperature generator 5 via a concentrated solution pipeline through a solution pump 2, a solution heat exchanger 3, and a second solution heat exchanger 4. The connection is then adjusted so that the low-temperature generator 1 has a concentrated solution pipeline connected to the absorber 6 via a second solution pump 15 and a second solution heat exchanger 4. The absorber 6 then has a dilute solution pipeline connected to the high-temperature generator 5 via a solution pump 2 and a solution heat exchanger 3. The high-temperature generator 5 is connected to the absorber 6 via a concentrated solution pipeline through a second solution heat exchanger 4. The connection is then adjusted so that the high-temperature generator 5 has a concentrated solution pipeline connected to the low-temperature generator 1 via a solution heat exchanger 3 and a second solution heat exchanger 4.

[0036] (2) In terms of process, with Figure 1Compared to the fourth type of absorption heat pump shown, the difference is that: the dilute solution of absorber 6 enters high-temperature generator 5 through solution pump 2 and solution heat exchanger 3. The high-temperature heat medium flows through high-temperature generator 5, heats the solution inside it, releases refrigerant vapor, and supplies it to high-temperature condenser 10. The concentrated solution of high-temperature generator 5 enters low-temperature generator 1 through solution heat exchanger 3 and second solution heat exchanger 4. The condensate flows through low-temperature generator 1, heats the solution inside it, releases refrigerant vapor, and supplies it to low-temperature condenser 7. The concentrated solution of low-temperature generator 1 enters absorber 6 through second solution pump 15 and second solution heat exchanger 4, absorbs refrigerant vapor, and releases heat to the heated medium, thus forming the fourth type of absorption heat pump.

[0037] Figure 3 The fourth type of absorption heat pump shown is implemented as follows:

[0038] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, the low-temperature generator 1 is connected to the high-temperature generator 5 via a concentrated solution pipeline through a solution pump 2, a solution heat exchanger 3, and a second solution heat exchanger 4. The low-temperature generator 1 is then connected to the absorber 6 via a concentrated solution pipeline through a second solution pump 15 and a solution heat exchanger 3. The absorber 6 also has a dilute solution pipeline connected to the second absorber 16 via a solution heat exchanger 3. The second absorber 16 then has a dilute solution pipeline connected to the high-temperature generator 5 via a solution pump 2 and a second solution heat exchanger 4. The high-temperature generator 5 is connected to the high-temperature generator 5 via a concentrated solution pipeline... The path is adjusted so that the high-temperature generator 5 has a concentrated solution pipeline connected to the low-temperature generator 1 via the second solution heat exchanger 4 and the absorber 6. The low-temperature condenser 7 and the low-pressure pump 8 are removed. The low-temperature condenser 7 and its external cooling medium channel and the condensate pipeline connected to the evaporator 9 via the low-pressure pump 8 are also removed. The low-temperature generator 1 is adjusted so that the refrigerant vapor channel is connected to the low-temperature condenser 7 and the low-temperature generator 1 has a refrigerant vapor channel connected to the second absorber 16. The second absorber 16 also has a cooling medium channel connected to the outside.

[0039] (2) In terms of process, with Figure 1Compared to the fourth type of absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 6 enters the second absorber 16 via solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the cooling medium; the dilute solution of the second absorber 16 enters the high-temperature generator 5 via solution pump 2 and second solution heat exchanger 4; the high-temperature heat medium flows through the high-temperature generator 5, heats the solution inside it, releases refrigerant vapor and supplies it to the high-temperature condenser 10; the concentrated solution of the high-temperature generator 5 enters the low-temperature generator 1 via the second solution heat exchanger 4; the condensate flows through the low-temperature generator 1, heats the solution inside it, releases refrigerant vapor and supplies it to the second absorber 16; the concentrated solution of the low-temperature generator 1 enters the absorber 6 via the second solution pump 15 and solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the heated medium, thus forming the fourth type of absorption heat pump.

[0040] Figure 4 The fourth type of absorption heat pump shown is implemented as follows:

[0041] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, compressor A is added, and the refrigerant vapor passage of the high-temperature generator 5 is connected to the high-temperature condenser 10. The connection is adjusted so that the refrigerant vapor passage of the high-temperature generator 5 is connected to the high-temperature condenser 10 via compressor A.

[0042] (2) In terms of process, with Figure 1 Compared to the fourth type of absorption heat pump shown, the difference is that the refrigerant vapor generated by the high-temperature generator 5 flows through the compressor A to increase its pressure and temperature, and then enters the high-temperature condenser 10 to release heat and condense; the external mechanical energy is provided by the compressor A to form the fourth type of absorption heat pump.

[0043] Figure 5 The fourth type of absorption heat pump shown is implemented as follows:

[0044] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, compressor A is added, and the medium-pressure refrigerant vapor channel of ejector 13 is connected to absorber 6, so that the medium-pressure refrigerant vapor channel of ejector 13 is connected to absorber 6 via compressor A.

[0045] (2) In terms of process, with Figure 1 Compared to the fourth type of absorption heat pump shown, the difference is that the refrigerant vapor discharged by the ejector 13 flows through the compressor A to increase its pressure and temperature, and then enters the absorber 6 to release heat and condense; the external mechanical energy is provided by the compressor A to form the fourth type of absorption heat pump.

[0046] Figure 6 The fourth type of absorption heat pump shown is implemented as follows:

[0047] (1) Structurally, in Figure 1In the fourth type of absorption heat pump shown, a two-phase expander B is added and the throttle valve 14 is replaced.

[0048] (2) In terms of process, with Figure 1 Compared with the fourth type of absorption heat pump shown, the difference is that the condensate discharged from the steam separator 12 flows through the low temperature generator 1 and releases heat, flows through the two-phase expander B to reduce pressure and do work, and then enters the evaporator 9 to absorb heat and vaporize; the mechanical energy output by the two-phase expander B is provided to the outside, forming the fourth type of absorption heat pump.

[0049] Figure 7 The fourth type of absorption heat pump shown is implemented as follows:

[0050] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, a new nozzle C is added and replaces the throttle valve 14.

[0051] (2) In terms of process, with Figure 1 Compared with the fourth type of absorption heat pump shown, the difference is that the condensate discharged from the steam distribution chamber 12 flows through the low temperature generator 1 and releases heat, flows through the nozzle C to reduce pressure and increase speed, and then enters the evaporator 9 to absorb heat and vaporize, forming the fourth type of absorption heat pump.

[0052] Figure 8 The steam generation system based on an absorption heat pump shown is implemented as follows:

[0053] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, a second ejector 17 is added. There is an external working steam channel connected to the high-pressure steam inlet of the second ejector 17. The heating medium channels of the absorber 6 and the high-temperature condenser 10 are respectively connected to the outside. The heating medium channels of the absorber 6 and the high-temperature condenser 10 are then connected to the low-pressure steam inlet of the second ejector 17. The second ejector 17 also has a user steam channel connected to the outside.

[0054] (2) In terms of process, with Figure 1 Compared to the fourth type of absorption heat pump shown, the difference lies in the following: working steam is supplied externally to the second ejector 17, the heated medium flows through the absorber 6 and the high-temperature condenser 10 and gradually absorbs heat and vaporizes, and then enters the second ejector 17 through the low-pressure steam inlet; the working steam enters the second ejector 17, flows through the nozzle to reduce pressure and increase speed and form a low pressure, and the steam discharged from the high-temperature condenser 10 is drawn into the low-pressure zone of the second ejector 17. After the two steams are mixed, they flow through the diffuser to reduce speed and increase pressure to form medium-pressure steam and are supplied to the steam user; the external second ejector 17 provides steam-driven heat load, forming a steam generation system based on the absorption heat pump.

[0055] Figure 9The steam generation system based on an absorption heat pump shown is implemented as follows:

[0056] (1) Structurally, in Figure 1 In the fourth type of absorption heat pump shown, a second ejector, a high-pressure pump, and a steam generator are added. An external liquid medium channel is connected to the steam generator 19 via the high-pressure pump 18. The steam generator 19 also has a steam channel connected to the high-pressure steam inlet of the second ejector 17. The heating medium channels connecting the absorber 6 and the high-temperature condenser 10 to the outside are adjusted so that the external heating medium channels connecting the absorber 6 and the high-temperature condenser 10 are connected to the low-pressure steam inlet of the second ejector 17. The second ejector 17 also has a user steam channel connected to the outside, and the steam generator 19 also has a high-temperature heat medium channel connected to the outside.

[0057] (2) In terms of process, with Figure 1 Compared to the fourth type of absorption heat pump shown, the difference lies in the following: the liquid medium flows through the high-pressure pump 18 to increase its pressure and then enters the steam generator 19. The high-temperature heat medium flows through the steam generator 19 and heats the liquid medium entering it to form high-pressure steam, which is then provided to the second ejector 17 as working steam. The heated medium flows through the absorber 6 and the high-temperature condenser 10 to gradually absorb heat and vaporize, and then enters the second ejector 17 through the low-pressure steam inlet. The high-pressure steam enters the second ejector 17, flows through the nozzle to decrease pressure and increase speed to form low pressure, and the refrigerant steam discharged from the high-temperature condenser 10 is drawn into the low-pressure zone of the second ejector 17. After the two steam streams are mixed, they flow through the diffuser to decrease speed and increase pressure to form medium-pressure steam and provide it to the steam user. The high-temperature heat medium provides high-temperature driving heat load through the steam generator 19, forming a steam generation system based on the absorption heat pump.

[0058] The effects achievable by the technology of this invention—the fourth type of absorption heat pump and the steam generation system based on the absorption heat pump proposed in this invention have the following effects and advantages:

[0059] (1) A new technology for efficient heating / steam production using thermal energy or combined mechanical energy has been created.

[0060] (2) The technology is reasonable and the measures are simple, effectively reducing the irreversible temperature difference loss during the utilization of condensate heat load.

[0061] (3) It reduces the cooling discharge of condensate heat load and relatively increases the quality / quantity of low-temperature heat resources.

[0062] (4) High-temperature heat sources are used in segments to reduce irreversible losses due to systemic temperature differences and improve their utilization efficiency and value.

[0063] (5) It expands the range of parameters for heating / steam supply, improves energy utilization efficiency and value, and enhances economic efficiency.

[0064] (6) The process is reasonable and the performance index is reasonable; the structure is simple and the manufacturing cost is low.

[0065] (7) The ejector realizes the energy recovery of condensate, effectively improving energy utilization efficiency.

[0066] (8) It has expanded the application scenarios and application value of jetting technology and absorption technology.

[0067] (9) Provides a variety of specific technical solutions that can cope with many different actual situations, which is conducive to expanding the application scope and use value of the fourth type of absorption heat pump and the steam generation system based on absorption heat pump.

Claims

1. The fourth type of absorption heat pump is mainly composed of a low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator, an absorber, a low-temperature condenser, a low-pressure pump, an evaporator, a high-temperature condenser, a nozzle, a steam distribution chamber, an ejector, and a throttling valve; the low-temperature generator (1) has a concentrated solution pipeline connected to the high-temperature generator (5) via the solution pump (2), the solution heat exchanger (3), and the second solution heat exchanger (4); the high-temperature generator (5) also has a concentrated solution pipeline connected to the absorber (6) via the second solution heat exchanger (4); the absorber (6) also has a dilute solution pipeline connected to the low-temperature generator (1) via the solution heat exchanger (3); the low-temperature generator (1) also has a refrigerant vapor channel connected to the low-temperature condenser (7); the low-temperature condenser (7) also has a condensate pipeline connected to the evaporator (9) via the low-pressure pump (8); and the high-temperature generator (5) also has refrigerant vapor... The channel is connected to the high-temperature condenser (10). The high-temperature condenser (10) also has a condensate pipeline connected to the steam distribution chamber (12) via the nozzle (11). The steam distribution chamber (12) also has a refrigerant vapor channel connected to the high-pressure steam inlet of the ejector (13). The steam distribution chamber (12) also has a condensate pipeline connected to the evaporator (9) via the low-temperature generator (1) and the throttle valve (14). The evaporator (9) also has a refrigerant vapor channel connected to the low-pressure steam inlet of the ejector (13). The ejector (13) also has a medium-pressure refrigerant vapor channel connected to the absorber (6). The high-temperature generator (5) also has a high-temperature heat medium channel connected to the outside. The absorber (6) and the high-temperature condenser (10) also have heated medium channels connected to the outside. The low-temperature condenser (7) also has a cooling medium channel connected to the outside. The evaporator (9) also has a low-temperature heat medium channel connected to the outside, forming a fourth type of absorption heat pump.

2. The fourth type of absorption heat pump is the fourth type of absorption heat pump described in claim 1, wherein the low-temperature generator (1) is connected to the high-temperature generator (5) via a concentrated solution pipeline through a solution pump (2), a solution heat exchanger (3), and a second solution heat exchanger (4), and the low-temperature generator (1) is connected to the absorber (6) via a concentrated solution pipeline through a second solution pump (15) and a second solution heat exchanger (4), and the absorber (6) is connected to the high-temperature generator (5) via a dilute solution pipeline through a solution pump (2) and a solution heat exchanger (3), and the high-temperature generator (5) is connected to the absorber (6) via a concentrated solution pipeline through a second solution heat exchanger (4), and the high-temperature generator (5) is connected to the low-temperature generator (1) via a concentrated solution pipeline through a solution heat exchanger (3) and a second solution heat exchanger (4), thus forming the fourth type of absorption heat pump.

3. A fourth type of absorption heat pump, in the fourth type of absorption heat pump as described in claim 1, wherein the low-temperature generator (1) is connected to the high-temperature generator (5) via a concentrated solution pipeline through a solution pump (2), a solution heat exchanger (3), and a second solution heat exchanger (4). The low-temperature generator (1) is then connected to the absorber (6) via a concentrated solution pipeline through a second solution pump (15) and a solution heat exchanger (3). The absorber (6) also has a dilute solution pipeline connected to the second absorber (16) via a solution heat exchanger (3). The second absorber (16) further has a dilute solution pipeline connected to the high-temperature generator (5) via a solution pump (2) and a second solution heat exchanger (4). The high-temperature generator (5) is then connected to the absorber (5). The concentrated solution pipeline is connected to the absorber (6) via the second solution heat exchanger (4) and adjusted to be a high temperature generator (5). The concentrated solution pipeline is connected to the low temperature generator (1) via the second solution heat exchanger (4). The low temperature condenser (7) and the low pressure pump (8) are removed. The low temperature condenser (7) and its external cooling medium channel and the condensate pipeline connected to the evaporator (9) via the low pressure pump (8) are removed. The low temperature generator (1) is connected to the low temperature condenser (7) via a refrigerant vapor channel and adjusted to be connected to the second absorber (16) via a refrigerant vapor channel. The second absorber (16) also has a cooling medium channel connected to the outside, forming a fourth type of absorption heat pump.

4. The fourth type of absorption heat pump is formed by adding a compressor (A) to any of the fourth type of absorption heat pumps described in claims 1-3, and adjusting the high-temperature generator (5) to have a refrigerant vapor channel connected to the high-temperature condenser (10) so that the high-temperature generator (5) has a refrigerant vapor channel connected to the high-temperature condenser (10) via the compressor (A), thus forming the fourth type of absorption heat pump.

5. The fourth type of absorption heat pump is a fourth type of absorption heat pump formed by adding a compressor (A) to any of the fourth type of absorption heat pumps described in claims 1-3, and adjusting the connection between the ejector (13) and the absorber (6) to have a medium-pressure refrigerant vapor channel, so that the ejector (13) has a medium-pressure refrigerant vapor channel connected to the absorber (6) via the compressor (A).

6. A fourth type of absorption heat pump is formed by adding a two-phase expander (B) and replacing the throttle valve (14) to any of the fourth type of absorption heat pumps described in claims 1-3 to form a fourth type of absorption heat pump.

7. The fourth type of absorption heat pump is formed by adding a new nozzle (C) and replacing the throttle valve (14) in any of the fourth type of absorption heat pumps described in claims 1-3 to form the fourth type of absorption heat pump.

8. A steam generation system based on an absorption heat pump is formed by adding a second ejector (17) to any of the fourth type of absorption heat pumps described in claims 1-3. The second ejector (17) has a working steam channel connected to the high-pressure steam inlet of the second ejector (17). The absorber (6) and the high-temperature condenser (10) are respectively connected to the outside through heated medium channels. The heated medium channels are then connected to the absorber (6) and the high-temperature condenser (10) and connected to the low-pressure steam inlet of the second ejector (17). The second ejector (17) also has a user steam channel connected to the outside, thus forming a steam generation system based on an absorption heat pump.

9. A steam generation system based on an absorption heat pump is formed by adding a second ejector, a high-pressure pump, and a steam generator to any of the fourth type of absorption heat pumps described in claims 1-3. An external liquid medium channel is connected to the steam generator (19) via the high-pressure pump (18). The steam generator (19) also has a steam channel connected to the high-pressure steam inlet of the second ejector (17). The absorber (6) and the high-temperature condenser (10) are respectively connected to the outside through heated medium channels. The external heated medium channels are then connected to the absorber (6) and the high-temperature condenser (10) and connected to the low-pressure steam inlet of the second ejector (17). The second ejector (17) also has a user steam channel connected to the outside. The steam generator (19) also has a high-temperature heat medium channel connected to the outside, thus forming a steam generation system based on an absorption heat pump.

10. A steam generation system based on an absorption heat pump is formed by adding a compressor (A) to any of the steam generation systems based on an absorption heat pump as described in claims 8-9, and adjusting the connection between the refrigerant vapor channel of the high-temperature generator (5) and the high-temperature condenser (10) to be such that the refrigerant vapor channel of the high-temperature generator (5) is connected to the high-temperature condenser (10) via the compressor (A), thereby forming a steam generation system based on an absorption heat pump.

11. A steam generation system based on an absorption heat pump is formed by adding a compressor (A) to any of the steam generation systems based on an absorption heat pump as described in claims 8-9, and adjusting the connection between the ejector (13) and the absorber (6) so that the ejector (13) has a medium-pressure refrigerant vapor channel connected to the absorber (6) via the compressor (A), thereby forming a steam generation system based on an absorption heat pump.

12. A steam generation system based on an absorption heat pump is formed by adding a two-phase expander (B) and replacing the throttle valve (14) to any of the steam generation systems based on an absorption heat pump as described in claims 8-9, thereby forming a steam generation system based on an absorption heat pump.

13. A steam generation system based on an absorption heat pump is formed by adding a new nozzle (C) and replacing the throttle valve (14) to any of the steam generation systems based on an absorption heat pump as described in claims 8-9, thereby forming a steam generation system based on an absorption heat pump.

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