Energy-carrying internal combustion engine type combined cycle heat pump system

Abstract

The present application provides an energy-carrying internal combustion engine combined cycle heat pump system, belonging to the technical field of heat pump. The external air channel is connected with the internal combustion engine through the compressor and the high-temperature heat exchanger, and the external fuel channel is also connected with the internal combustion engine. The internal combustion engine also has a gas channel connected with the steam generator and the outside, and a cooling medium channel connected with the outside. The second compressor is connected with the injector low-pressure steam inlet, the steam generator is connected with the injector high-pressure steam inlet, the injector is connected with the heat supplier, the heat supplier is connected with the steam generator through the booster pump, the heat supplier is connected with the evaporator through the throttle valve, and the evaporator is connected with the second compressor. The high-temperature heat exchanger has a high-temperature heat medium channel, the heat supplier has a heated medium channel, and the evaporator has a low-temperature heat medium channel, which are respectively connected with the outside. The internal combustion engine is connected with the compressor and the second compressor and transmits power, forming an energy-carrying internal combustion engine combined cycle heat pump system.

Description

Technical fields:

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

[0002] Heat pump technology is an important means of obtaining cold / heat / steam / power and realizing the high-value utilization of energy. In practical applications, it is necessary to consider operating parameters, performance index, manufacturing cost, adaptability, as well as the characteristics of different energy sources and targeted technical means.

[0003] High-quality fuels, typically represented by natural gas, gasoline, and diesel, are high-temperature heat sources with temperatures exceeding several thousand degrees Celsius. Achieving efficient and high-value utilization of these high-quality fuels is of great significance and presents significant technical challenges.

[0004] The advantage of internal combustion engines that utilize high-quality fuels lies in the utilization of the thermal energy of the high-temperature section of the gas and the provision of power. The further issue to be addressed is how to achieve efficient utilization of the gas exhaust heat load using the simplest possible technical means.

[0005] Vapor compression heat pump technology, which operates on the principle of reverse Rankine cycle, has the advantage of being able to achieve constant-temperature heat absorption; however, meeting the demand for high-parameter heating or steam is technically challenging.

[0006] Steam jet technology has the advantages of simple structure, reliable operation, low investment and long service life; its disadvantages are that the utilization efficiency of driving steam needs to be improved and the heating temperature is limited; in practical applications, the advantages should be brought into play and the disadvantages should be avoided.

[0007] Based on the fundamental principles of simple and efficient use of high-quality fuels for refrigeration / heating / steam production / power, this invention presents a combined cycle heat pump system for energy and internal combustion engines that features a rational process, simple structure, multiple functions, and optimized performance index. Summary of the Invention:

[0008] The main objective of this invention is to provide an energy-carrying internal combustion engine combined cycle heat pump system. The specific contents of the invention are described in detail below:

[0009] 1. The combined cycle heat pump system with internal combustion engine mainly consists of an internal combustion engine, compressor, high-temperature heat exchanger, steam generator, second compressor, injector, heater, booster pump, throttle valve, and evaporator. Externally, it has an air passage connecting to the internal combustion engine via the compressor and high-temperature heat exchanger; an external fuel passage connecting to the internal combustion engine; a gas passage connecting the internal combustion engine to the steam generator and then to the outside; a cooling medium passage connecting the internal combustion engine to the outside; a refrigerant vapor passage connecting the second compressor to the low-pressure steam inlet of the injector; and a steam passage connecting the steam generator to... The system includes a high-pressure steam inlet for the ejector, a medium-pressure refrigerant steam channel connecting the ejector to the heater, a condensate line connecting the heater to the steam generator via a booster pump, a condensate line connecting the heater to the evaporator via a throttling valve, and a refrigerant steam channel connecting the evaporator to the second compressor. The high-temperature heat exchanger also has a high-temperature heat medium channel connecting to the outside, the heater has a heated medium channel connecting to the outside, and the evaporator has a low-temperature heat medium channel connecting to the outside. The internal combustion engine connects to the compressor and the second compressor and transmits power, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0010] 2. The combined cycle heat pump system with an internal combustion engine is a system described in item 1, in which the high-temperature heat exchanger and its high-temperature heat medium channel connected to the outside are eliminated, and a heating furnace is added. The heating furnace is connected to the outside by a fuel channel and an air channel connected to the heating furnace via a heat source regenerator. The heating furnace is also connected to the outside by a gas channel connected to the outside via a heat source regenerator. The system is changed from having an external air channel connected to the internal combustion engine via a compressor and a high-temperature heat exchanger to having an external air channel connected to the internal combustion engine via a compressor and a heating furnace, thus forming the combined cycle heat pump system with an internal combustion engine.

[0011] 3. The combined cycle heat pump system with an internal combustion engine is a system described in item 1, in which the high-temperature heat exchanger and its high-temperature heat medium channel connected to the outside are eliminated, a combustion chamber is added, and an external fuel channel connects the combustion chamber. The external air channel connected to the internal combustion engine via the compressor and high-temperature heat exchanger is changed to an external air channel connected to the combustion chamber via the compressor. The combustion chamber also has an initial gas channel connected to the internal combustion engine, thus forming the combined cycle heat pump system with an internal combustion engine.

[0012] 4. An energy-integrated internal combustion engine combined cycle heat pump system is formed by adding a regenerator to any of the energy-integrated internal combustion engine combined cycle heat pump systems described in items 1-3. The original system is modified so that the condensate pipe of the heater is connected to the evaporator via a throttling valve, and the condensate pipe of the heater is connected to the evaporator via the regenerator and the throttling valve. The original system is modified so that the refrigerant vapor passage of the evaporator is connected to the second compressor, and the refrigerant vapor passage of the evaporator is connected to the second compressor via the regenerator, thus forming an energy-integrated internal combustion engine combined cycle heat pump system.

[0013] 5. An energy-integrated internal combustion engine combined cycle heat pump system is constructed by adding a regenerator, an expander, and a second heater to any of the energy-integrated internal combustion engine combined cycle heat pump systems described in items 1-3. The second compressor is modified so that it has a refrigerant vapor channel connected to the low-pressure steam inlet of the ejector, and then the refrigerant vapor channel is connected to the second heater, splitting into two paths—the first path connects to the low-pressure steam inlet of the ejector, and the second path connects to the expander. The expander also has a refrigerant vapor channel connected to the regenerator, and then connected to the second compressor via an intermediate port. The heater has a condensate pipeline connected to the evaporator via a throttling valve, and is modified so that the heater has a refrigerant medium pipeline (either fully condensed or partially condensed) connected to the evaporator via the regenerator and the throttling valve. The second heater also has a heated medium channel connected to the outside. The expander connects to the second compressor and transmits power, forming an energy-integrated internal combustion engine combined cycle heat pump system.

[0014] 6. An energy-integrated internal combustion engine combined cycle heat pump system is constructed by adding a regenerator, an expander, a second heater, and a second regenerator to any of the energy-integrated internal combustion engine combined cycle heat pump systems described in items 1-3. The second compressor is configured to have a refrigerant vapor channel connected to the low-pressure steam inlet of the ejector, and then the refrigerant vapor channel is connected to the second heater, splitting into two paths—the first path connects to the low-pressure steam inlet of the ejector, and the second path connects to the expander. The expander also has a refrigerant vapor channel connected to the regenerator, and then connected to the second compressor via an intermediate port. The heater has a condensate line connected to the evaporator via a throttling valve, and is configured to have a refrigerant medium line (either fully condensed or partially condensed) connected to the evaporator via the regenerator, the second regenerator, and the throttling valve. The evaporator has a refrigerant vapor channel connected to the second compressor, and is configured to have a refrigerant vapor channel connected to the second compressor via the second regenerator. The second heater also has a heated medium channel connected to the outside. The expander connects to the second compressor and transmits power, forming an energy-integrated internal combustion engine combined cycle heat pump system.

[0015] 7. An energy-carrying internal combustion engine type combined cycle heat pump system is formed by adding a two-phase expander to replace the throttle valve in any of the energy-carrying internal combustion engine type combined cycle heat pump systems described in items 1-6. The two-phase expander is connected to a second compressor and transmits power to form an energy-carrying internal combustion engine type combined cycle heat pump system.

[0016] 8. An energy-carrying internal combustion engine combined cycle heat pump system is formed by adding a nozzle and replacing the throttle valve to any of the energy-carrying internal combustion engine combined cycle heat pump systems described in items 1-6, and adding a dual-energy compressor and replacing the second compressor.

[0017] 9. An energy-carrying internal combustion engine type combined cycle heat pump system is formed by adding a nozzle and replacing the throttle valve to any of the energy-carrying internal combustion engine type combined cycle heat pump systems described in items 5-6, adding a dual-energy compressor and replacing the second compressor, and adding an expander speed increaser and replacing the expander.

[0018] 10. An energy-integrated internal combustion engine combined cycle heat pump system is any one of the energy-integrated internal combustion engine combined cycle heat pump systems described in items 1-3, with the addition of a nozzle and a steam distribution chamber. The heating unit is changed from having a condensate line connected to the evaporator via a throttling valve to having a condensate line connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the second compressor through an intermediate port, and the steam distribution chamber also has a condensate line connected to the evaporator via a throttling valve, thus forming an energy-integrated internal combustion engine combined cycle heat pump system.

[0019] 11. An energy-integrated internal combustion engine combined cycle heat pump system is any one of the energy-integrated internal combustion engine combined cycle heat pump systems described in items 1-3, with the addition of a regenerator, a nozzle, and a steam distribution chamber. The heating unit is modified so that the condensate pipe is connected to the evaporator via a throttling valve, and the heating unit is also connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the second compressor through an intermediate port. The steam distribution chamber also has a condensate pipe connected to the evaporator via a regenerator and a throttling valve. The evaporator is modified so that the refrigerant vapor passage is connected to the second compressor via a regenerator, thus forming an energy-integrated internal combustion engine combined cycle heat pump system.

[0020] 12. An energy-carrying internal combustion engine combined cycle heat pump system is formed by adding a second nozzle to replace the throttle valve and adding a dual-energy compressor to replace the second compressor in any of the energy-carrying internal combustion engine combined cycle heat pump systems described in items 10-11, thereby forming an energy-carrying internal combustion engine combined cycle heat pump system.

[0021] 13. An energy-integrated internal combustion engine combined cycle heat pump system is any one of the energy-integrated internal combustion engine combined cycle heat pump systems described in items 1-12, with the addition of a second booster pump and a second injector. An external liquid medium pipeline connects to the steam generator via the second booster pump, and the steam generator then has a steam channel connecting to the high-pressure steam inlet of the second injector. The heating unit is adjusted from having a heated medium channel connected to the outside to having a heated medium channel connected to the low-pressure steam inlet of the second injector via the heating unit. The second injector also has a user steam channel connected to the outside, thus forming an energy-integrated internal combustion engine combined cycle heat pump system.

[0022] 14. An energy-carrying internal combustion engine combined cycle heat pump system is any one of the energy-carrying internal combustion engine combined cycle heat pump systems described in items 1-13, with the addition of a new heater, adjusting the steam generator from having a gas passage connected to the outside to having a gas passage connected to the outside via the new heater, and the new heater also having a heated medium passage connected to the outside, thus forming an energy-carrying internal combustion engine combined cycle heat pump system. Attached image description:

[0023] Figure 1 This is a principle thermal system diagram of a combined cycle heat pump system with an energy-carrying internal combustion engine provided by the present invention.

[0024] Figure 2 This is a second principle thermal system diagram of an energy-carrying internal combustion engine combined cycle heat pump system provided by the present invention.

[0025] Figure 3 This is a third principle thermal system diagram of an energy-carrying internal combustion engine combined cycle heat pump system provided by the present invention.

[0026] Figure 4 This is a fourth principle thermal system diagram of an energy-carrying internal combustion engine combined cycle heat pump system provided by the present invention.

[0027] Figure 5 This is a fifth principle thermal system diagram of an energy-carrying internal combustion engine combined cycle heat pump system provided by the present invention.

[0028] Figure 6 This is a sixth principle thermal system diagram of an energy-carrying internal combustion engine combined cycle heat pump system provided by the present invention.

[0029] Figure 7 This is the seventh principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0030] Figure 8 This is the eighth principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0031] Figure 9 This is the ninth principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0032] Figure 10 This is the tenth principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0033] Figure 11This is the 11th principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0034] Figure 12 This is the 12th principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0035] Figure 13 This is the 13th principle thermal system diagram of the combined cycle heat pump system with energy carrying internal combustion engine provided by the present invention.

[0036] Figure 14 This is the 14th principle thermal system diagram of an energy-carrying internal combustion engine combined cycle heat pump system provided by the present invention.

[0037] In the diagram, 1-internal combustion engine, 2-compressor, 3-high temperature heat exchanger, 4-steam generator, 5-second compressor, 6-injector, 7-heater, 8-boost pump, 9-throttle valve, 10-evaporator, 11-heat furnace, 12-heat source regenerator, 13-combustion chamber, 14-regenerator, 15-expander, 16-second heater, 17-second regenerator, 18-two-phase expander, 19-nozzle, 20-dual-energy compressor, 21-expander speed increaser, 22-steam distribution chamber, 23-second nozzle, 24-second boost pump, 25-second injector, 26-newly added heater. Detailed implementation method:

[0038] First, it should be noted that the structure and process are not repeated unless necessary, and obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0039] Figure 1 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0040] (1) Structurally, it mainly consists of an internal combustion engine, a compressor, a high-temperature heat exchanger, a steam generator, a second compressor, an injector, a heater, a booster pump, a throttle valve, and an evaporator; externally, there is an air passage that connects to the internal combustion engine 1 via the compressor 2 and the high-temperature heat exchanger 3, and an external fuel passage that connects to the internal combustion engine 1. The internal combustion engine 1 also has a gas passage that connects to the steam generator 4 and then to the outside, and the internal combustion engine 1 also has a cooling medium passage that connects to the outside. The second compressor 5 has a refrigerant vapor passage that connects to the low-pressure steam inlet of the injector 6, and the steam generator 4 has a steam passage that connects to the... The ejector 6 has a high-pressure steam inlet, and also has a medium-pressure refrigerant steam channel connected to the heater 7. The heater 7 also has a condensate pipeline connected to the steam generator 4 via a booster pump 8, and a condensate pipeline connected to the evaporator 10 via a throttle valve 9. The evaporator 10 has a refrigerant steam channel connected to the second compressor 5. The high-temperature heat exchanger 3 also has a high-temperature heat medium channel connected to the outside, the heater 7 also has a heated medium channel connected to the outside, and the evaporator 10 also has a low-temperature heat medium channel connected to the outside. The internal combustion engine 1 connects to the compressor 2 and the second compressor 5 and transmits power.

[0041] (2) In terms of process, external air flows through compressor 2 to increase pressure and temperature, flows through high-temperature heat exchanger 3 to absorb heat and increase temperature, and then enters internal combustion engine 1; external fuel enters internal combustion engine 1, and fuel and air complete a series of processes including combustion and expansion in the cylinder of internal combustion engine 1; the exhaust gas from internal combustion engine 1 flows through steam generator 4 to release heat and cool down before being discharged to the outside; the cooling medium flows through internal combustion engine 1 to cool the cylinder liner and carry away the exhaust cooling heat load; the refrigerant vapor discharged by the second compressor 5 is supplied to injector 6; the steam generated by steam generator 4 enters injector 6 through high-pressure steam inlet; the high-pressure steam flows through nozzle to decrease pressure and increase speed to form low pressure; the refrigerant vapor discharged by the second compressor 5 is drawn into the low-pressure zone of injector 6; after the two steams are mixed, they flow through diffuser to decrease speed and increase pressure to form medium-pressure refrigerant vapor and are supplied to heater 7; the refrigerant vapor enters heater 7 to release heat and condense. The flow is then split into two streams: the first stream flows through the booster pump 8 for pressurization and then enters the steam generator 4 for heat absorption and vaporization; the second stream flows through the throttle valve 9 for pressure and temperature reduction, then through the evaporator 10 for heat absorption and vaporization, and then enters the second compressor 5 for pressure and temperature increase. The fuel provides the driving heat load through combustion, the high-temperature heat medium provides the driving heat load through the high-temperature heat exchanger 3, and the air and gas carry away the low-temperature emission heat load through the inlet and outlet processes. The heated medium obtains the medium-temperature heat load through the heater 7, and the low-temperature heat medium provides the low-temperature heat load through the evaporator 10. The mechanical energy output by the internal combustion engine 1 provides power to the compressor 2 and the second compressor 5, or the mechanical energy output by the internal combustion engine 1 provides power to the compressor 2, the second compressor 5 and the external environment, or the internal combustion engine 1 and the external environment jointly provide power to the compressor 2 and the second compressor 5, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0042] Figure 2The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0043] (1) Structurally, in Figure 1 In the combined cycle heat pump system with internal combustion engine shown, the high-temperature heat exchanger 3 and its high-temperature heat medium channel connected to the outside are removed, and a heater 11 is added. There is a fuel channel connected to the heater 11 from the outside, and an air channel connected to the heater 11 via the heat source regenerator 14 from the outside. The heater 11 also has a gas channel connected to the outside via the heat source regenerator 14. The connection between the external air channel connected to the internal combustion engine 1 via the compressor 2 and the high-temperature heat exchanger 3 is changed to the connection between the external air channel connected to the internal combustion engine 1 via the compressor 2 and the heater 11 from the inside.

[0044] (2) In terms of process, with Figure 1 Compared to the energy-carrying internal combustion engine type combined cycle heat pump system shown, the difference is as follows: external fuel enters the heating furnace 11, and external air flows through the heat source regenerator 14 to absorb heat and increase its temperature before entering the heating furnace 11. The fuel and air mix and burn in the heating furnace 11 to form gas. The gas generated in the heating furnace 11 releases heat to the compressed air flowing through it, and then flows through the heat source regenerator 14 to release heat and decrease its temperature before being discharged to the outside. External air flows through the compressor 2 to increase its pressure and temperature, flows through the heating furnace 11 to absorb heat and increase its temperature, and then enters the internal combustion engine 1, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0045] Figure 3 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0046] (1) Structurally, in Figure 1 In the combined cycle heat pump system with internal combustion engine shown, the high-temperature heat exchanger 3 and its high-temperature heat medium channel connected to the outside are eliminated, and a combustion chamber 13 is added. There is an external fuel channel connected to the combustion chamber 13. The external air channel connected to the internal combustion engine 1 via the compressor 2 and the high-temperature heat exchanger 3 is changed to an external air channel connected to the combustion chamber 13 via the compressor 2. The combustion chamber 13 also has an initial gas channel connected to the internal combustion engine 1.

[0047] (2) In terms of process, with Figure 1 Compared with the energy-carrying internal combustion engine type combined cycle heat pump system shown, the difference is that: external fuel enters the combustion chamber 13, external air flows through the compressor 2 to be pressurized and heated, and then enters the combustion chamber 13; fuel and compressed air are mixed and burned in the combustion chamber 13 to form an air-rich (oxygen-rich) initial gas, which then enters the internal combustion engine 1, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0048] Figure 4 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0049] (1) Structurally, in Figure 1 In the combined cycle heat pump system with internal combustion engine shown, a regenerator 14 is added. The condensate pipe of the heater 7 is connected to the evaporator 10 through the throttle valve 9. The condensate pipe of the heater 7 is connected to the evaporator 10 through the regenerator 14 and the throttle valve 9. The refrigerant vapor passage of the evaporator 10 is connected to the second compressor 5. The refrigerant vapor passage of the evaporator 10 is connected to the second compressor 5 through the regenerator 14.

[0050] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system with internal combustion engine shown, the difference is that the second condensate discharged from the heater 7 flows through the regenerator 14 to release heat and cool down, flows through the throttling valve 9 to reduce pressure and cool down, flows through the evaporator 10 to absorb heat and vaporize, flows through the regenerator 14 to absorb heat and increase temperature, and then enters the second compressor 5 to increase pressure and temperature, forming the combined cycle heat pump system with internal combustion engine.

[0051] Figure 5 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0052] (1) Structurally, in Figure 1 In the combined cycle heat pump system with internal combustion engine shown, a regenerator, an expander, and a second heater are added. The refrigerant vapor passage of the second compressor 5 is connected to the low-pressure steam inlet of the ejector 6. The system is then adjusted so that the refrigerant vapor passage of the second compressor 5 is connected to the second heater 16, and then splits into two paths—the first path is connected to the low-pressure steam inlet of the ejector 6, and the second path is connected to the expander 15. The expander 15 also has a refrigerant vapor passage connected to the regenerator 14, and then connected to the second compressor 5 through an intermediate port. The condensate pipeline of the heater 7 is connected to the evaporator 10 through the throttle valve 9. The system is then adjusted so that the heater 7 has a refrigerant medium pipeline that is either fully condensed or partially condensed, which is connected to the evaporator 10 through the regenerator 14 and the throttle valve 9. The second heater 16 also has a heated medium passage that is connected to the outside. The expander 15 is connected to the second compressor 5 and transmits power.

[0053] (2) In terms of process, with Figure 1Compared to the combined cycle heat pump system with internal combustion engine shown, the difference lies in the following: the refrigerant vapor discharged from the second compressor 5 flows through the second heater 16 to release heat and cool down, and then splits into two paths—the first path is supplied to the ejector 6, and the second path flows through the expander 15 to reduce pressure and do work, flows through the regenerator 14 to absorb heat and heat up, and enters the second compressor 5 through the intermediate air intake port to increase pressure and temperature; the medium-pressure refrigerant vapor discharged from the ejector 6 enters the heater 7 to release heat and then condenses completely or partially, and then splits into two paths—the first path flows through the booster pump 8 to increase pressure and enters the steam generator 4 to absorb heat and vaporize, and the second path flows through the regenerator 14 to release heat, flows through the throttle valve 9 to reduce pressure and cool down, flows through the evaporator 10 to absorb heat and vaporize, and then enters the second compressor 5 to increase pressure and temperature; the heated medium obtains a medium-temperature heat load through the second heater 16, and the mechanical energy output from the expander 15 is provided to the second compressor 5 to provide power, forming a combined cycle heat pump system with internal combustion engine.

[0054] Figure 6 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0055] (1) Structurally, in Figure 1 In the combined cycle heat pump system with an internal combustion engine shown, a regenerator, an expander, a second heater, and a second regenerator are added. The refrigerant vapor passage of the second compressor 5, connected to the low-pressure steam inlet of the ejector 6, is adjusted so that the refrigerant vapor passage of the second compressor 5 connects to the second heater 16, then splits into two paths—the first path connects to the low-pressure steam inlet of the ejector 6, and the second path connects to the expander 15. The expander 15 also has a refrigerant vapor passage connected to the regenerator 14, and then connects to the second compressor 5 through an intermediate port. The heater 7 has a condensate pipeline connected to the evaporator 10 via a throttle valve 9. The heater 7 is adjusted to have a refrigerant medium pipeline that is either fully condensed or partially condensed, which is connected to the evaporator 10 via the regenerator 14, the second regenerator 17, and the throttle valve 9. The evaporator 10 has a refrigerant vapor passage connected to the second compressor 5. The evaporator 10 is adjusted to have a refrigerant vapor passage connected to the second compressor 5 via the second regenerator 17. The second heater 16 also has a heated medium passage connected to the outside. The expander 15 is connected to the second compressor 5 and transmits power.

[0056] (2) In terms of process, with Figure 1Compared to the combined cycle heat pump system with an internal combustion engine, the energy source shown differs in the following ways: The refrigerant vapor discharged from the second compressor 5 flows through the second heater 16 to release heat and cool down, then splits into two paths—the first path supplies the ejector 6, and the second path flows through the expander 15 to reduce pressure and perform work, flows through the regenerator 14 to absorb heat and increase temperature, and then enters the second compressor 5 through the intermediate intake port to increase pressure and temperature; the medium-pressure vapor discharged from the ejector 6 enters the heater 7 to release heat and is either completely condensed or incompletely condensed, then splits into two paths—the first... One stream flows through the booster pump 8 for pressurization and then enters the steam generator 4 to absorb heat and vaporize. The second stream flows through the regenerator 14 and the second regenerator 17, gradually releasing heat, then flows through the throttling valve 9 to reduce pressure and temperature, then flows through the evaporator 10 to absorb heat and vaporize, then flows through the second regenerator 17 to absorb heat and increase temperature, and finally enters the second compressor 5 to increase pressure and temperature. The heated medium obtains a medium-temperature heat load through the second heater 16, and the mechanical energy output by the expander 15 provides power to the second compressor 5, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0057] Figure 7 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0058] (1) Structurally, in Figure 1 In the energy-carrying internal combustion engine type combined cycle heat pump system shown, a two-phase expander 18 is added and replaces the throttle valve 9. The two-phase expander 18 is connected to the second compressor 5 and transmits power.

[0059] (2) In terms of process, with Figure 1 Compared with the energy-carrying internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 7 flows through the two-phase expander 18 to reduce pressure and do work, and then enters the evaporator 10 to absorb heat and vaporize; the mechanical energy output by the two-phase expander 18 is provided to the second compressor 5 to provide power, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0060] Figure 8 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0061] (1) Structurally, in Figure 1 In the energy-carrying internal combustion engine combined cycle heat pump system shown, a nozzle 19 is added and replaces the throttle valve 9, and a dual-energy compressor 20 is added and replaces the second compressor 5.

[0062] (2) In terms of process, with Figure 1 Compared with the energy-carrying internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 7 flows through the nozzle 19 to reduce pressure and increase speed, flows through the evaporator 10 to absorb heat and vaporize, and then enters the dual-energy compressor 20 to increase pressure and temperature and reduce speed, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0063] Figure 9 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0064] (1) Structurally, in Figure 6 In the energy-carrying internal combustion engine type combined cycle heat pump system shown, a nozzle 19 is added and replaces the throttle valve 9, a dual-energy compressor 20 is added and replaces the second compressor 5, and an expander speed increaser 21 is added and replaces the expander 15.

[0065] (2) In terms of process, with Figure 6 Compared to the combined cycle heat pump system with internal combustion engine shown, the difference lies in the following: the condensate discharged from the second regenerator 17 flows through the nozzle 19 to reduce pressure and increase speed, flows through the evaporator 10 to absorb heat and vaporize, flows through the second regenerator 17 to absorb heat and increase temperature, and then enters the dual-energy compressor 20 to increase pressure and temperature and decrease speed; the refrigerant vapor discharged from the second heater 16 is divided into two paths - the first path is provided to the ejector 6, and the second path flows through the expander accelerator 21 to reduce pressure and do work and increase speed, flows through the regenerator 14 to absorb heat and increase temperature, and enters the dual-energy compressor 20 through the intermediate port to increase pressure and temperature and decrease speed, thus forming a combined cycle heat pump system with internal combustion engine.

[0066] Figure 10 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0067] (1) Structurally, in Figure 1 In the combined cycle heat pump system with internal combustion engine shown, a nozzle and a steam distribution chamber are added. The condensate pipe of the heater 7 is connected to the evaporator 10 through the throttle valve 9. The heater 7 is adjusted to have a condensate pipe connected to the steam distribution chamber 22 through the nozzle 19. The steam distribution chamber 22 also has a refrigerant vapor passage connected to the second compressor 5 through the intermediate port. The steam distribution chamber 22 also has a condensate pipe connected to the evaporator 10 through the throttle valve 9.

[0068] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system with internal combustion engine shown, the difference is that: the condensate discharged from the heater 7 flows through the nozzle 19 to reduce pressure and increase speed, and then enters the steam separator 22 for gas-liquid separation; the refrigerant vapor discharged from the steam separator 22 enters the second compressor 5 through the intermediate port to increase pressure and temperature, and the condensate discharged from the steam separator 22 flows through the throttle valve 9 to reduce pressure and temperature before entering the evaporator 10 to absorb heat and vaporize, thus forming the combined cycle heat pump system with internal combustion engine.

[0069] Figure 11 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0070] (1) Structurally, in Figure 1In the combined cycle heat pump system with internal combustion engine shown, a regenerator, nozzle, and steam distribution chamber are added. The condensate pipe of the heater 7 connected to the evaporator 10 via the throttle valve 9 is adjusted to connect the heater 7 to the steam distribution chamber 22 via the nozzle 19. The steam distribution chamber 22 also has a refrigerant vapor passage connected to the second compressor 5 through an intermediate port. The steam distribution chamber 22 also has a condensate pipe connected to the evaporator 10 via the regenerator 14 and the throttle valve 9. The refrigerant vapor passage of the evaporator 10 connected to the second compressor 5 is adjusted to connect the evaporator 10 to the second compressor 5 via the regenerator 14.

[0071] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system with internal combustion engine shown, the difference lies in the following: the condensate discharged from the heater 7 flows through the nozzle 19 to reduce pressure and increase speed, and then enters the steam separator 22 for gas-liquid separation; the refrigerant vapor discharged from the steam separator 22 enters the second compressor 5 through the intermediate port to increase pressure and temperature; the condensate discharged from the steam separator 22 flows through the regenerator 14 to release heat and reduce temperature, flows through the throttle valve 9 to reduce pressure and reduce temperature, flows through the evaporator 10 to absorb heat and vaporize, flows through the regenerator 14 to absorb heat and increase temperature, and then enters the second compressor 5 to increase pressure and increase temperature, thus forming the combined cycle heat pump system with internal combustion engine.

[0072] Figure 12 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0073] (1) Structurally, in Figure 10 In the energy-carrying internal combustion engine combined cycle heat pump system shown, a second nozzle 23 is added and replaces the throttle valve 9, and a dual-energy compressor 20 is added and replaces the second compressor 5.

[0074] (2) In terms of process, with Figure 10 Compared with the energy-carrying internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the steam distribution chamber 22 flows through the second nozzle 23 to reduce pressure and increase speed, flows through the evaporator 10 to absorb heat and vaporize, and then enters the dual-energy compressor 20 to increase pressure and temperature and reduce speed, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0075] Figure 13 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0076] (1) Structurally, in Figure 1In the combined cycle heat pump system with internal combustion engine shown, a second booster pump and a second injector are added. An external liquid medium pipeline connects to the steam generator 4 via the second booster pump 24. The steam generator 4 then has a steam channel connecting to the high-pressure steam inlet of the second injector 25. The heating unit 7 is adjusted from having a heated medium channel connected to the outside to having a heated medium channel connected to the low-pressure steam inlet of the second injector 25 via the heating unit 7. The second injector 25 also has a user steam channel connected to the outside.

[0077] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system with internal combustion engine shown, the difference lies in the following: the external liquid medium flows through the second booster pump 24 to increase its pressure, flows through the steam generator 4 to absorb heat and vaporize, and then enters the second ejector 25 through the high-pressure steam inlet. The heated medium flows through the heater 7 to absorb heat and vaporize, and then enters the second ejector 25 through the low-pressure steam inlet. The high-pressure steam flows through the nozzle to decrease its pressure and increase its speed to form a low-pressure system. The steam discharged from the heater 7 is drawn into the low-pressure zone of the second ejector 25. After the two steam streams are mixed, they flow through the diffuser to decrease their speed and increase their pressure to form medium-pressure steam, which is then supplied to the steam user. The user obtains a steam-type medium-temperature heat load, thus forming a combined cycle heat pump system with internal combustion engine.

[0078] Figure 14 The energy-carrying internal combustion engine combined cycle heat pump system shown is implemented as follows:

[0079] (1) Structurally, in Figure 1 In the combined cycle heat pump system with internal combustion engine shown, an additional heater 26 is added. The steam generator 4 is changed from having a gas passage connected to the outside to having a gas passage connected to the outside via the additional heater 26. The additional heater 26 also has a heated medium passage connected to the outside.

[0080] (2) In terms of process, with Figure 1 Compared with the energy-carrying internal combustion engine type combined cycle heat pump system shown, the difference is that: the gas emitted by the steam generator 4 flows through the newly added heater 26 to release heat and cool down, and then is discharged to the outside; the heated medium obtains the heating load through the newly added heater 26, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

[0081] The effects achievable by this invention—the energy-carrying internal combustion engine combined cycle heat pump system proposed in this invention has the following effects and advantages:

[0082] (1) New ideas and technologies for utilizing temperature difference are presented.

[0083] (2) High-quality fuels form high-grade heat sources, which are fully utilized step by step, significantly improving energy efficiency.

[0084] (3) New technologies for the efficient and high-value utilization of high-quality fuels in refrigeration / heating / steam / power production and combined cooling / heating / steam / power supply are presented.

[0085] (4) Energy collaboration, giving full play to the leading role of high-quality fuels, and improving the efficient and high-value utilization of different energy types.

[0086] (5) When necessary, external power can be used to raise the temperature of thermal energy, which is flexible and adaptable.

[0087] (6) The compressor and the ejector jointly obtain the low temperature heat load, which is beneficial to improve the heating parameters or reduce the compressor's pressure boosting share.

[0088] (7) The injector enables efficient utilization of gas emission heat load and temperature increase of low temperature heat load, which relatively reduces the size of the compressor and effectively reduces the manufacturing cost of the device.

[0089] (8) The process is reasonable, the structure is simple, the manufacturing cost is low, and the system economy is effectively improved.

[0090] (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 value of the combined cycle heat pump system technology that combines energy and internal combustion engine.

Claims

1. The combined cycle heat pump system with internal combustion engine is mainly composed of an internal combustion engine, compressor, high-temperature heat exchanger, steam generator, second compressor, injector, heater, booster pump, throttle valve and evaporator; an external air passage connects to the internal combustion engine (1) via the compressor (2) and high-temperature heat exchanger (3), an external fuel passage connects to the internal combustion engine (1), the internal combustion engine (1) also has a gas passage connecting to the steam generator (4) and then to the outside, the internal combustion engine (1) also has a cooling medium passage connecting to the outside, the second compressor (5) has a refrigerant vapor passage connecting to the low-pressure steam inlet of the injector (6), and the steam generator (4) has a steam passage connecting to the high-pressure steam inlet of the injector (6). The injector (6) is connected to the heater (7) via a medium-pressure refrigerant vapor channel. The heater (7) is connected to the steam generator (4) via a condensate pipeline via a booster pump (8). The heater (7) is connected to the evaporator (10) via a throttle valve (9). The evaporator (10) is connected to the second compressor (5) via a refrigerant vapor channel. The high-temperature heat exchanger (3) is connected to the outside via a high-temperature heat medium channel. The heater (7) is connected to the outside via a heated medium channel. The evaporator (10) is connected to the outside via a low-temperature heat medium channel. The internal combustion engine (1) is connected to the compressor (2) and the second compressor (5) and transmits power, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

2. The combined cycle heat pump system with internal combustion engine is based on the combined cycle heat pump system with internal combustion engine described in claim 1. The high-temperature heat exchanger (3) and its high-temperature heat medium channel connected to the outside are removed, and a heating furnace (11) is added. There is a fuel channel connected to the heating furnace (11) from the outside, and an air channel connected to the heating furnace (11) via a heat source regenerator (12) from the outside. The heating furnace (11) also has a gas channel connected to the outside via the heat source regenerator (12). The connection between the external air channel connected to the internal combustion engine (1) via the compressor (2) and the high-temperature heat exchanger (3) is changed to the connection between the external air channel connected to the internal combustion engine (1) via the compressor (2) and the heating furnace (11) from the outside, thus forming a combined cycle heat pump system with internal combustion engine.

3. The combined cycle heat pump system with energy carrying internal combustion engine is based on the combined cycle heat pump system with energy carrying internal combustion engine as described in claim 1. The high-temperature heat exchanger (3) and its high-temperature heat medium channel connected to the outside are removed, and a combustion chamber (13) is added. There is a fuel channel connected to the combustion chamber (13) from the outside. The connection between the external air channel and the internal combustion engine (1) via the compressor (2) and the high-temperature heat exchanger (3) is changed to the connection between the external air channel and the combustion chamber (13) via the compressor (2). The combustion chamber (13) also has a primary gas channel connected to the internal combustion engine (1), thus forming a combined cycle heat pump system with energy carrying internal combustion engine.

4. An energy-carrying internal combustion engine combined cycle heat pump system is an energy-carrying internal combustion engine combined cycle heat pump system according to any one of claims 1-3, wherein a regenerator (14) is added, the condensate pipe of the heater (7) is connected to the evaporator (10) through the throttle valve (9) and the condensate pipe of the heater (7) is connected to the evaporator (10) through the regenerator (14) and the throttle valve (9), and the refrigerant vapor passage of the evaporator (10) is connected to the second compressor (5) and the refrigerant vapor passage of the evaporator (10) is connected to the second compressor (5) through the regenerator (14), thus forming an energy-carrying internal combustion engine combined cycle heat pump system.

5. An energy-carrying internal combustion engine type combined cycle heat pump system is an energy-carrying internal combustion engine type combined cycle heat pump system according to any one of claims 1-3, with the addition of a regenerator, an expander, and a second heater. The refrigerant vapor passage of the second compressor (5) connected to the low-pressure steam inlet of the ejector (6) is adjusted so that the refrigerant vapor passage of the second compressor (5) is connected to the second heater (16) and then split into two paths—the first path is connected to the low-pressure steam inlet of the ejector (6) and the second path is connected to the expander (15). The expander (15) also has a refrigerant vapor passage. After the steam passage connects to the regenerator (14), it is connected to the second compressor (5) through the intermediate port. The condensate pipeline of the heater (7) is connected to the evaporator (10) through the throttle valve (9). The heater (7) is adjusted to have a refrigerant medium pipeline that is fully condensed or not fully condensed, which is connected to the evaporator (10) through the regenerator (14) and the throttle valve (9). The second heater (16) also has a heated medium passage that is connected to the outside. The expander (15) is connected to the second compressor (5) and transmits power, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

6. An energy-carrying internal combustion engine combined cycle heat pump system is an energy-carrying internal combustion engine combined cycle heat pump system according to any one of claims 1-3, with the addition of a regenerator, an expander, a second heater, and a second regenerator. The refrigerant vapor passage of the second compressor (5) connected to the low-pressure steam inlet of the injector (6) is adjusted so that the refrigerant vapor passage of the second compressor (5) is connected to the second heater (16), and then splits into two paths—the first path is connected to the low-pressure steam inlet of the injector (6) and the second path is connected to the expander (15). The expander (15) also has a refrigerant vapor passage connected to the regenerator (14), and then connected to the second compressor (5) through an intermediate port, so that the refrigerant vapor passage is connected to the second heater (14). The heater (7) has a condensate pipe connected to the evaporator (10) via a throttle valve (9). The heater (7) has a refrigerant medium pipe that is either fully condensed or not fully condensed, which is connected to the evaporator (10) via the regenerator (14), the second regenerator (17) and the throttle valve (9). The evaporator (10) has a refrigerant vapor passage connected to the second compressor (5). The evaporator (10) has a refrigerant vapor passage connected to the second compressor (5) via the second regenerator (17). The second heater (16) also has a heated medium passage connected to the outside. The expander (15) is connected to the second compressor (5) and transmits power, forming an energy-carrying internal combustion engine type combined cycle heat pump system.

7. An energy-carrying internal combustion engine type combined cycle heat pump system is formed by adding a two-phase expander (18) and replacing the throttle valve (9) to any of the energy-carrying internal combustion engine type combined cycle heat pump systems described in claims 1-6. The two-phase expander (18) is connected to the second compressor (5) and transmits power to form an energy-carrying internal combustion engine type combined cycle heat pump system.

8. An energy-carrying internal combustion engine type combined cycle heat pump system is formed by adding a nozzle (19) and replacing the throttle valve (9) to any one of the energy-carrying internal combustion engine type combined cycle heat pump systems described in claims 1-6, and adding a dual-energy compressor (20) and replacing the second compressor (5) to form an energy-carrying internal combustion engine type combined cycle heat pump system.

9. An energy-carrying internal combustion engine type combined cycle heat pump system is formed by adding a nozzle (19) to replace the throttle valve (9) in any one of the energy-carrying internal combustion engine type combined cycle heat pump systems described in claims 5-6, adding a dual-energy compressor (20) to replace the second compressor (5), and adding an expander speed increaser (21) to replace the expander (15).

10. An energy-carrying internal combustion engine combined cycle heat pump system is an energy-carrying internal combustion engine combined cycle heat pump system according to any one of claims 1-3, with the addition of a nozzle and a steam distribution chamber. The condensate pipe of the heater (7) is connected to the evaporator (10) through a throttle valve (9), and the heater (7) is connected to the steam distribution chamber (22) through the nozzle (19). The steam distribution chamber (22) also has a refrigerant vapor passage connected to the second compressor (5) through an intermediate port. The steam distribution chamber (22) also has a condensate pipe connected to the evaporator (10) through a throttle valve (9), thus forming an energy-carrying internal combustion engine combined cycle heat pump system.

11. An energy-carrying internal combustion engine combined cycle heat pump system is an energy-carrying internal combustion engine combined cycle heat pump system according to any one of claims 1-3, with the addition of a regenerator, a nozzle and a steam distribution chamber. The condensate pipe of the heater (7) is connected to the evaporator (10) through the throttle valve (9) and adjusted to connect the condensate pipe of the heater (7) to the steam distribution chamber (22) through the nozzle (19). The steam distribution chamber (22) also has a refrigerant vapor passage connected to the second compressor (5) through an intermediate port. The condensate pipe of the steam distribution chamber (22) is also connected to the evaporator (10) through the regenerator (14) and the throttle valve (9). The refrigerant vapor passage of the evaporator (10) is connected to the second compressor (5) and adjusted to connect the refrigerant vapor passage of the evaporator (10) through the regenerator (14) to the second compressor (5), thus forming an energy-carrying internal combustion engine combined cycle heat pump system.

12. An energy-carrying internal combustion engine type combined cycle heat pump system is formed by adding a second nozzle (23) to replace the throttle valve (9) and adding a dual-energy compressor (20) to replace the second compressor (5) in any of the energy-carrying internal combustion engine type combined cycle heat pump systems described in claims 10-11, thereby forming an energy-carrying internal combustion engine type combined cycle heat pump system.

13. An energy-carrying internal combustion engine combined cycle heat pump system is an energy-carrying internal combustion engine combined cycle heat pump system according to any one of claims 1-12, with the addition of a second booster pump and a second injector. An external liquid medium pipeline is connected to the steam generator (4) via the second booster pump (24), and the steam generator (4) is connected to the high-pressure steam inlet of the second injector (25) via a steam channel. The heating unit (7) is adjusted so that the heated medium channel is connected to the outside via the heating unit (7) and then to the low-pressure steam inlet of the second injector (25). The second injector (25) is also connected to the outside via a user steam channel, thus forming an energy-carrying internal combustion engine combined cycle heat pump system.

14. An energy-carrying internal combustion engine combined cycle heat pump system is formed by adding a new heater (26) to any of the energy-carrying internal combustion engine combined cycle heat pump systems described in claims 1-13, adjusting the steam generator (4) from having a gas channel connected to the outside to having a gas channel connected to the outside via the new heater (26), and the new heater (26) also having a channel for the heated medium connected to the outside, thus forming an energy-carrying internal combustion engine combined cycle heat pump system.

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