CN112460830A - Single-working medium combined cycle heat pump device - Google Patents
Single-working medium combined cycle heat pump device Download PDFInfo
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- CN112460830A CN112460830A CN202011152437.9A CN202011152437A CN112460830A CN 112460830 A CN112460830 A CN 112460830A CN 202011152437 A CN202011152437 A CN 202011152437A CN 112460830 A CN112460830 A CN 112460830A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
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Abstract
The invention provides a single-working medium combined cycle heat pump device, belonging to the technical field of refrigeration and heat pumps. The compressor is provided with a circulating working medium channel which is communicated with the heat supplier and then divided into two paths, wherein the first path is communicated with the heat regenerator through the expansion engine, the second path is communicated with the heat regenerator through the second heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with the evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, the heat regenerator is also provided with a circulating working medium channel which is communicated with the second compressor, and the second compressor is also provided with a circulating working medium channel which is communicated with the compressor through the second heat; the heat supplier is also provided with a heated medium channel communicated with the outside, the evaporator is also provided with a low-temperature heat medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
Description
The technical field is as follows:
the invention belongs to the technical field of refrigeration and heat pumps.
Background art:
cold demand, heat demand and power demand, which are common in human life and production; the conversion of mechanical energy into heat energy is an important way to realize refrigeration and efficient heating. In general, the temperature of the cooling medium changes during cooling, and the temperature of the medium to be heated also changes during heating; when mechanical energy is used for heating, the heated medium has the dual characteristics of temperature changing and high temperature at the same time, so that the problems of unreasonable performance index, low heating parameter, high compression ratio, too large working pressure and the like exist when refrigeration or heating is realized by adopting a single thermodynamic cycle theory.
Specifically, when heat release mainly depends on a condensation process, the loss of temperature difference between a working medium and a heated medium is large in a vapor compression heat pump device based on reverse Rankine cycle; meanwhile, the condensate is large in loss or high in utilization cost in the pressure reduction process; when the supercritical working condition is adopted, the compression ratio is higher, so that the manufacturing cost of the compressor is high, the safety is reduced, and the like; in both cases, the adverse effect on obtaining low temperature thermal load is difficult to eliminate. Similarly, a gas compression heat pump apparatus based on a reverse brayton cycle requires a low compression ratio, which limits the improvement of heating parameters; meanwhile, the low-temperature process is temperature-changing, so that the low-temperature link usually has large temperature difference loss during refrigeration or heating, and the performance index is not ideal.
Undeniably, the vapor compression heat pump has the advantages of absorbing low-temperature heat load in the evaporation process, and the gas compression heat pump has the advantages of variable-temperature heat release; if the advantages of the two can be kept, the sensible heat of the condensate is fully utilized, and the side effect of the pressure reduction of the condensate is eliminated, the obtained heat pump device has reasonable performance index, so that the application occasions of the heat pump device are enlarged. Based on comprehensive consideration, the invention aims to simplify, actively and efficiently use mechanical energy for refrigeration or heating from the principle of simply, actively and efficiently using mechanical energy, and provides a single-working-medium combined cycle heat pump device.
The invention content is as follows:
the invention mainly aims to provide a single-working-medium combined cycle heat pump device, and the specific invention contents are explained in sections as follows:
1. the single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator and a second heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with the heat supplier and then divided into two paths, wherein the first path is communicated with the heat regenerator through the expansion engine, the second path is communicated with the heat regenerator through the second heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with the evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, the heat regenerator is also provided with a circulating working medium channel which is communicated with the second compressor, and the second compressor is also provided with a circulating working medium channel which is communicated with the compressor through the second heat; the heat supplier is also provided with a heated medium channel communicated with the outside, the evaporator is also provided with a low-temperature heat medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
2. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor is provided with a circulating working medium channel which is communicated with a heat supplier and then divided into two paths, wherein the first path is communicated with a heat regenerator through an expander, the second path is communicated with a second heat regenerator through a second heat supplier, the second heat regenerator is also provided with a circulating working medium channel which is communicated with the heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, the heat regenerator is also provided with a circulating working medium channel which is communicated with the second compressor, and the second compressor is also provided with a circulating working medium channel which is communicated with; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
3. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a high-temperature heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator through a heat supplier and then divided into two paths, wherein the first path is communicated with the heat regenerator through an expander, the second path is communicated with the heat regenerator through a second heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is further provided with a circulating working medium channel which is communicated with the heat regenerator, the heat regenerator is further provided with a circulating working medium channel which is communicated with a second compressor, and the second compressor is further provided with a circulating working medium channel which is communicated with the compressor through the second heat regenerator and; the heat supplier is also provided with a heated medium channel communicated with the outside, the evaporator is also provided with a low-temperature heat medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
4. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat supplier and a high-temperature heat regenerator; the compressor is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator through a heat supplier and then divided into two paths, wherein the first path is communicated with the heat regenerator through an expander, the second path is communicated with a second heat regenerator through a second heat supplier, the second heat regenerator is also provided with a circulating working medium channel which is communicated with the heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline which is communicated with an evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, the heat regenerator is also provided with a circulating working medium channel which is communicated with the second compressor, and the second compressor is also provided with a circulating working medium channel which is communicated with the; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
5. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor has first cycle working medium passageway and second heat supplier intercommunication, the second heat supplier has cycle working medium passageway through expander and regenerator intercommunication in addition, the compressor also has second cycle working medium passageway and heater intercommunication, the heater also has cycle working medium passageway and regenerator intercommunication after the regenerator has the condensate liquid pipeline again and has throttle valve and evaporimeter intercommunication, the evaporimeter still has cycle working medium passageway and regenerator intercommunication, the regenerator also has cycle working medium passageway and second compressor intercommunication, the second compressor also has cycle working medium passageway through second regenerator and compressor intercommunication: the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
6. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor is provided with a first circulating working medium channel communicated with the heat supplier, the heat supplier is also provided with a circulating working medium channel which is communicated with the heat regenerator through a second heat regenerator, then the heat regenerator is further provided with a condensate liquid pipeline communicated with the evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel communicated with the heat regenerator, the compressor is also provided with a second circulating working medium channel communicated with the second heat supplier, the second heat supplier is also provided with a circulating working medium channel communicated with the heat regenerator through an expander, the heat regenerator is also provided with a circulating working medium channel communicated with the second compressor, and the second compressor is also provided with a circulating working medium channel communicated with the compressor through the second heat regenerator; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle heat pump device.
7. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator, a newly added compressor and a second heat supplier; the compressor is provided with a circulating working medium channel which is communicated with the heat supplier, the heat supplier is also provided with a circulating working medium channel which is communicated with the heat regenerator through a second heat regenerator, then the heat regenerator is communicated with the evaporator through a condensate liquid pipeline, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, the heat regenerator is also provided with a circulating working medium channel which is communicated with the second compressor, the second compressor is also provided with a circulating working medium channel which is communicated with the compressor and a newly-increased compressor respectively after passing through the second heat regenerator, the newly-increased compressor is also provided with a circulating working medium channel which is communicated with the second heat supplier, and the second heat supplier is also provided with a circulating working; the heat supply device and the second heat supply device are respectively communicated with the outside through a heated medium channel, the evaporator is also communicated with the outside through a low-temperature heat medium channel, and the expander is connected with the newly-added compressor and transmits power to form the single-working-medium combined cycle heat pump device.
8. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices in items 1-7, a throttle valve is omitted, a turbine is added, a condensate pipeline of a heat regenerator is communicated with an evaporator through the throttle valve, the condensate pipeline of the heat regenerator is adjusted to be communicated with the evaporator through the turbine, and the turbine is connected with a compressor and transmits power to form the single-working medium combined cycle heat pump device.
9. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices 1-7, an evaporator and a throttle valve are eliminated, a low-temperature heat medium channel communicated with the outside of the evaporator is eliminated, the evaporator is provided with a cycle working medium channel communicated with a heat regenerator and adjusted to be provided with a steam channel communicated with the heat regenerator, a condensate pipeline of the heat regenerator is communicated with the evaporator through the throttle valve and adjusted to be provided with a condensate pipeline communicated with the outside, and the single working medium combined cycle heat pump device is formed.
Description of the drawings:
fig. 1 is a schematic diagram of a first principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus 1 according to the present invention.
Fig. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
Fig. 3 is a schematic diagram of a 3 rd principle thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
Fig. 4 is a diagram of a 4 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
Fig. 5 is a diagram of a 5 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
Fig. 6 is a 6 th principle thermodynamic system diagram of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
Fig. 7 is a diagram of a 7 th principal thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
Fig. 8 is a diagram of an 8 th principle thermodynamic system of a single-working-medium combined-cycle heat pump apparatus according to the present invention.
In the figure, 1-compressor, 2-second compressor, 3-expander, 4-throttle valve, 5-heater, 6-evaporator, 7-regenerator, 8-second regenerator, 9-turbine, 10-second heater, 11-high temperature regenerator; a-adding a compressor.
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 1 is realized by:
(1) structurally, the system mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heater, an evaporator, a heat regenerator and a second heat regenerator; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with a heater 5, wherein the first path is communicated with a heat regenerator 7 through an expander 3, the second path is communicated with the heat regenerator 7 through a second heat regenerator 8, then a condensate liquid pipeline of the heat regenerator 7 is communicated with an evaporator 6 through a throttle valve 4, the evaporator 6 is also communicated with the heat regenerator 7 through the circulating working medium channel, the heat regenerator 7 is also communicated with a second compressor 2 through the circulating working medium channel, and the second compressor 2 is also communicated with the compressor 1 through the second heat regenerator 8; the heater 5 is also communicated with the outside through a heated medium channel, the evaporator 6 is also communicated with the outside through a low-temperature heat medium channel, and the expander 3 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to boost pressure and raise temperature, flows through the second heat regenerator 8 to absorb heat and raise temperature, and then enters the compressor 1 to boost pressure and raise temperature; the circulating working medium discharged by the compressor 1 flows through the heat supplier 5 and releases heat, and then is divided into two paths, wherein the first path flows through the expander 3 and then enters the heat regenerator 7 after being decompressed and applied with work, and the second path flows through the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through the throttle valve 4 to throttle and decompress, and enters the evaporator 6; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through a heater 5, the low-temperature heat load is provided by the low-temperature heat medium through an evaporator 6, and the external part and the expander 3 jointly provide power for the compressor 1 and the second compressor 2, so that the single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 2 is realized by:
(1) structurally, in the single-working medium combined cycle heat pump device shown in fig. 1, a throttle valve is eliminated, a turbine is added, a condensed liquid pipeline of a heat regenerator 7 is communicated with an evaporator 6 through a throttle valve 4, the condensed liquid pipeline of the heat regenerator 7 is adjusted to be communicated with the evaporator 6 through a turbine 9, and the turbine 9 is connected with a compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to boost pressure and raise temperature, flows through the second heat regenerator 8 to absorb heat and raise temperature, and then enters the compressor 1 to boost pressure and raise temperature; the circulating working medium discharged by the compressor 1 flows through the heat supplier 5 and releases heat, and then is divided into two paths, wherein the first path flows through the expander 3 and enters the heat regenerator 7 after being decompressed and done work, and the second path flows through the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through the turbine 9 and is decompressed and done work, and enters the evaporator 6; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through a heater 5, the low-temperature heat load is provided by the low-temperature heat medium through an evaporator 6, and the external part, the expander 3 and the turbine 9 jointly provide power for the compressor 1 and the second compressor 2, so that the single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 3 is realized by:
(1) structurally, the system mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with a heat supplier 5, wherein the first path is communicated with a heat regenerator 7 through an expander 3, the second path is communicated with a second heat regenerator 8 through a second heat supplier 10, the second heat regenerator 8 is also communicated with the heat regenerator 7, then the heat regenerator 7 is communicated with an evaporator 6 through a condensate liquid pipeline, the evaporator 6 is also communicated with the heat regenerator 7 through a circulating working medium channel, the heat regenerator 7 is also communicated with a second compressor 2 through a circulating working medium channel, and the second compressor 2 is also communicated with the compressor 1 through the second heat regenerator 8; the heat supplier 5 and the second heat supplier 10 are also respectively communicated with the outside through heated medium channels, the evaporator 6 is also communicated with the outside through a low-temperature heat medium channel, and the expander 3 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to boost pressure and raise temperature, flows through the second heat regenerator 8 to absorb heat and raise temperature, and then enters the compressor 1 to boost pressure and raise temperature; the circulating working medium discharged by the compressor 1 flows through the heat supplier 5 and releases heat, and then is divided into two paths, namely a first path flows through the expander 3 and enters the heat regenerator 7 after being decompressed and applied with work, and a second path flows through the second heat supplier 10, the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through the throttle valve 4 to throttle and decompress, and enters the evaporator 6; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through the heater 5 and the second heater 10, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 6, and the exterior and the expander 3 jointly provide power for the compressor 1 and the second compressor 2, so that the single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 4 is realized by:
(1) structurally, the system mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supply device, an evaporator, a heat regenerator, a second heat regenerator and a high-temperature heat regenerator; the compressor 1 is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator 11 through a heat supplier 5 and then divided into two paths, wherein the first path is communicated with the heat regenerator 7 through an expander 3, the second path is communicated with the heat regenerator 7 through a second heat regenerator 8, then a condensate liquid pipeline of the heat regenerator 7 is communicated with an evaporator 6 through a throttle valve 4, the evaporator 6 is also provided with the circulating working medium channel which is communicated with the heat regenerator 7, the heat regenerator 7 is also provided with the circulating working medium channel which is communicated with a second compressor 2, and the second compressor 2 is also provided with the circulating working medium channel which is communicated with the compressor 1 through the second heat regenerator 8 and the high-temperature heat regenerator; the heater 5 is also communicated with the outside through a heated medium channel, the evaporator 6 is also communicated with the outside through a low-temperature heat medium channel, and the expander 3 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to raise temperature, flows through the second heat regenerator 8 and the high-temperature heat regenerator 11 to gradually absorb heat and raise temperature, and then enters the compressor 1 to raise temperature and raise pressure; the circulating working medium discharged by the compressor 1 gradually releases heat and cools through the heat supplier 5 and the high-temperature heat regenerator 11, and then is divided into two paths, namely a first path flows through the expander 3 to reduce the pressure and do work and then enters the heat regenerator 7, a second path flows through the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through the throttle valve 4 to throttle and reduce the pressure and enters the evaporator 6; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through a heater 5, the low-temperature heat load is provided by the low-temperature heat medium through an evaporator 6, and the external part and the expander 3 jointly provide power for the compressor 1 and the second compressor 2, so that the single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 5 is realized by:
(1) structurally, the system mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor 1 is provided with a first circulating working medium channel communicated with a second heat supplier 10, the second heat supplier 10 is also provided with a circulating working medium channel communicated with a heat regenerator 7 through an expander 3, the compressor 1 is also provided with a second circulating working medium channel communicated with a heat supplier 5, the heat supplier 5 is also provided with a circulating working medium channel communicated with the heat regenerator 7 through a second heat regenerator 8, then the heat regenerator 7 is communicated with an evaporator 6 through a condensate pipeline through a throttle valve 4, the evaporator 6 is also provided with a circulating working medium channel communicated with the heat regenerator 7, the circulating working medium channel of the heat supplier 7 is also communicated with a second compressor 2, and the second compressor 2 is also provided with a circulating working medium channel communicated with the compressor 1 through the second heat regenerator 8; the heat supplier 5 and the second heat supplier 10 are also respectively communicated with the outside through heated medium channels, the evaporator 6 is also communicated with the outside through a low-temperature heat medium channel, and the expander 3 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to increase the pressure and raise temperature, flows through the second heat regenerator 8 to absorb heat and raise temperature, enters the compressor 1 to increase the pressure and raise temperature to a certain degree, and is divided into two paths, wherein the first path flows through the second heat supplier 10 to release heat, flows through the expander 3 to reduce the pressure and do work and enters the heat regenerator 7, the second path continues to increase the pressure and raise temperature, flows through the heat supplier 5 to release heat, flows through the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through the throttle valve 4; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through the heater 5 and the second heater 10, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 6, and the exterior and the expander 3 jointly provide power for the compressor 1 and the second compressor 2, so that the single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 6 is realized by:
(1) structurally, the system mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor 1 is provided with a first circulating working medium channel communicated with a heat supplier 5, the heat supplier 5 is also provided with a circulating working medium channel which is communicated with a heat regenerator 7 through a second heat regenerator 8, then the heat regenerator 7 is further provided with a condensate liquid pipeline communicated with an evaporator 6 through a throttle valve 4, the evaporator 6 is also provided with a circulating working medium channel communicated with the heat regenerator 7, the compressor 1 is also provided with a second circulating working medium channel communicated with a second heat supplier 10, the second heat supplier 10 is also provided with a circulating working medium channel communicated with the heat regenerator 7 through an expander 3, the heat regenerator 7 is also provided with a circulating working medium channel communicated with a second compressor 2, and the second compressor 2 is also provided with a circulating working medium channel communicated with the compressor 1 through the second heat regenerator 8; the heat supplier 5 and the second heat supplier 10 are also respectively communicated with the outside through heated medium channels, the evaporator 6 is also communicated with the outside through a low-temperature heat medium channel, and the expander 3 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to increase the pressure and raise temperature, flows through the second heat regenerator 8 to absorb heat and raise temperature, enters the compressor 1 to increase the pressure and raise temperature to a certain degree, and is divided into two paths, wherein the first path flows through the heat supplier 5 to release heat, flows through the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through the throttle valve 4 to throttle and lower the pressure and enters the evaporator 6, and the second path continues to increase the pressure and raise temperature, flows through the second heat supplier 10 to release heat, flows through the expander 3 to; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through the heater 5 and the second heater 10, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 6, and the exterior and the expander 3 jointly provide power for the compressor 1 and the second compressor 2, so that the single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 7 is realized by:
(1) structurally, the system mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator, a newly-added compressor and a second heat supplier; the compressor 1 is provided with a circulating working medium channel communicated with a heat supplier 5, the heat supplier 5 is also provided with a circulating working medium channel, the heat supplier 7 is communicated with a heat regenerator 7 through a second heat regenerator 8, then the heat regenerator 7 is further provided with a condensate liquid pipeline communicated with an evaporator 6 through a throttle valve 4, the evaporator 6 is also provided with a circulating working medium channel communicated with the heat regenerator 7, the heat regenerator 7 is also provided with a circulating working medium channel communicated with a second compressor 2, the second compressor 2 is also provided with a circulating working medium channel communicated with the compressor 1 and a newly-added compressor A respectively after passing through the second heat regenerator 8, the newly-added compressor A is further provided with a circulating working medium channel communicated with a second heat supplier 10, and the second heat supplier 10 is further provided with a circulating working medium channel communicated with the; the heat supplier 5 and the second heat supplier 10 are also respectively communicated with the outside through heated medium channels, the evaporator 6 is also communicated with the outside through a low-temperature heat medium channel, and the expander 3 is connected with the newly-added compressor A and transmits power.
(2) In the process, the circulating working medium discharged by the expander 3 and the evaporator 6 enters the heat regenerator 7 to absorb heat and raise temperature, flows through the second compressor 2 to increase the pressure and raise temperature, flows through the second heat regenerator 8 to absorb heat and raise temperature, and then is divided into two paths, wherein the first path flows through the newly-added compressor A to increase the pressure and raise temperature, flows through the second heat supplier 10 to release heat, flows through the expander 3 to reduce the pressure and do work and enters the heat regenerator 7, the second path flows through the compressor 1 to increase the pressure and raise temperature, flows through the heat supplier 5 to release heat, flows through the second heat regenerator 8 and the heat regenerator 7 to gradually release heat and condense, flows through; the circulating working medium entering the evaporator 6 absorbs heat and is vaporized, and then enters the heat regenerator 7; the heated medium obtains high-temperature heat load through the heat supplier 5 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 6, the exterior and the expander 3 jointly provide power for the compressor 1, the second compressor 2 and the newly-added compressor A, and a single-working-medium combined cycle heat pump device is formed.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 8 is realized by:
(1) structurally, in the single-working medium combined cycle heat pump device shown in fig. 1, an evaporator and a throttle valve are eliminated, a low-temperature heat medium channel for communicating the evaporator 6 with the outside is eliminated, the evaporator 6 is communicated with a heat regenerator 7 through a circulating working medium channel, the evaporator 6 is adjusted to be communicated with the heat regenerator 7 through a steam channel, the heat regenerator 7 is communicated with the evaporator 6 through a throttle valve 4, and the heat regenerator 7 is adjusted to be communicated with the outside through a condensate pipeline.
(2) In the process, the circulating working medium in an external steam state enters the heat regenerator 7, the circulating working medium discharged by the expansion machine 3 enters the heat regenerator 7, and the two paths of circulating working media are heated and absorbed in the heat regenerator 7, are boosted and heated by flowing through the second compressor 2, are heated and absorbed by flowing through the second heat regenerator 8, and enter the compressor 1 to be boosted and heated; the circulating working medium discharged by the compressor 1 flows through the heat supplier 5 and releases heat, and then is divided into two paths, wherein the first path flows through the expander 3 and enters the heat regenerator 7 after being decompressed and applied with work, and the second path flows through the second heat regenerator 8 and the heat regenerator 7 and is discharged outwards after gradually releasing heat and condensing; the heated medium obtains high-temperature heat load through the heater 5, external steam provides low-temperature heat load through the business turn over flow, and the outside and expander 3 provide power for compressor 1 and second compressor 2 jointly, form the single-working-medium combined cycle heat pump device.
The effect that the technology of the invention can realize-the single-working medium combined cycle heat pump device provided by the invention has the following effects and advantages:
(1) basic technologies for mechanical energy refrigeration and heating utilization (energy difference utilization) are provided.
(2) The heat supply load in the phase change heat release process is eliminated or greatly reduced, the heat supply load of a high-temperature heat supply section is relatively increased, and the performance index of the device is improved.
(3) The adverse effect of condensate sensible heat on obtaining low-temperature heat load is eliminated, and the performance index of the device is improved.
(4) Greatly improving the utilization degree of the sensible heat of the condensate, being beneficial to reducing the compression ratio and improving the performance index of the device.
(5) The working parameter range is greatly expanded, and high-efficiency heat supply and high-efficiency high-temperature heat supply are realized.
(6) The working pressure is reduced, and the safety of the device is improved.
(7) The single working medium is beneficial to production and storage; reduce the running cost and improve the flexibility of circulation regulation
(8) In the high temperature area or the variable temperature area, the temperature difference heat transfer loss of the heat release link is reduced, and the performance index is improved.
(9) And a low-pressure operation mode is adopted in a high-temperature heat supply area, so that the contradiction between the performance index, the circulating medium parameter and the pressure and temperature resistance of the pipe in the traditional refrigeration and heat pump device is relieved or solved.
(10) The application range is wide, the energy supply requirement can be well met, and the working medium and the working parameters are flexibly matched.
(11) The thermodynamic cycle range of the mechanical energy for efficiently utilizing cold/heat is expanded, and the efficient utilization of the mechanical energy in the fields of refrigeration, high-temperature heat supply and variable-temperature heat supply is favorably realized.
Claims (9)
1. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator and a second heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a heat supplier (5) and then divided into two paths, wherein the first path is communicated with a heat regenerator (7) through an expander (3), the second path is communicated with the heat regenerator (7) through a second heat regenerator (8), then a condensate liquid pipeline of the heat regenerator (7) is communicated with an evaporator (6) through a throttle valve (4), the evaporator (6) is also provided with the circulating working medium channel which is communicated with the heat regenerator (7), the heat regenerator (7) is also provided with the circulating working medium channel which is communicated with the second compressor (2), and the second compressor (2) is also provided with the circulating working medium channel which is communicated with the compressor (1) through the second heat regenerator (8); the heat supply device (5) is also provided with a heated medium channel communicated with the outside, the evaporator (6) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (3) is connected with the compressor (1) and transmits power to form a single-working-medium combined cycle heat pump device.
2. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor (1) is provided with a circulating working medium channel which is communicated with a heat supplier (5) and then divided into two paths, wherein the first path is communicated with a heat regenerator (7) through an expander (3), the second path is communicated with a second heat regenerator (8) through a second heat supplier (10), the second heat regenerator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7), then the heat regenerator (7) is further provided with a condensate pipeline which is communicated with an evaporator (6) through a throttle valve (4), the evaporator (6) is further provided with a circulating working medium channel which is communicated with the heat regenerator (7), the heat regenerator (7) is further provided with a circulating working medium channel which is communicated with the second compressor (2), and the second compressor (2) is further provided with a circulating working medium channel which is communicated with the compressor (1) through the second heat regenerator (8; the heat supply device (5) and the second heat supply device (10) are also respectively communicated with the outside through a heated medium channel, the evaporator (6) is also communicated with the outside through a low-temperature heat medium channel, and the expander (3) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.
3. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator (11) through a heat supplier (5) and then divided into two paths, wherein the first path is communicated with the heat regenerator (7) through an expander (3), the second path is communicated with the heat regenerator (7) through a second heat regenerator (8), then a condensate liquid pipeline of the heat regenerator (7) is communicated with an evaporator (6) through a throttle valve (4), the evaporator (6) is also provided with the circulating working medium channel which is communicated with the heat regenerator (7), the heat regenerator (7) is also provided with the circulating working medium channel which is communicated with a second compressor (2), and the second compressor (2) is also provided with the circulating working medium channel which is communicated with the compressor (1) through the second heat regenerator (8) and the high-temperature heat regenerator (11); the heat supply device (5) is also provided with a heated medium channel communicated with the outside, the evaporator (6) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (3) is connected with the compressor (1) and transmits power to form a single-working-medium combined cycle heat pump device.
4. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat supplier and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with a high-temperature heat regenerator (11) through a heat supplier (5) and then divided into two paths, wherein the first path is communicated with a heat regenerator (7) through an expander (3), the second path is communicated with a second heat regenerator (8) through a second heat supplier (10), the second heat regenerator (8) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7), then the heat regenerator (7) is further provided with a condensate pipeline which is communicated with an evaporator (6) through a throttle valve (4), the evaporator (6) is further provided with a circulating working medium channel which is communicated with the heat regenerator (7), the heat regenerator (7) is further provided with a circulating working medium channel which is communicated with the second compressor (2), and the second compressor (2) is further provided with a circulating working medium channel which is communicated with the compressor (1) through the second heat regenerator (8) and the high; the heat supply device (5) and the second heat supply device (10) are also respectively communicated with the outside through a heated medium channel, the evaporator (6) is also communicated with the outside through a low-temperature heat medium channel, and the expander (3) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.
5. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor (1) is provided with a first circulating working medium channel communicated with a second heat supplier (10), the second heat supplier (10) is also provided with a circulating working medium channel communicated with a heat regenerator (7) through an expander (3), the compressor (1) is also provided with a second circulating working medium channel communicated with a heat supplier (5), the heat supplier (5) is also provided with a circulating working medium channel communicated with the heat regenerator (7) through a second heat regenerator (8), then the heat regenerator (7) is further provided with a condensate liquid pipeline communicated with an evaporator (6) through a throttle valve (4), the evaporator (6) is also provided with a circulating working medium channel communicated with the heat regenerator (7), the heat regenerator (7) is also provided with a circulating working medium channel communicated with a second compressor (2), and the second compressor (2) is also provided with a circulating working medium channel communicated with the compressor (1) through the second heat regenerator (8); the heat supply device (5) and the second heat supply device (10) are also respectively communicated with the outside through a heated medium channel, the evaporator (6) is also communicated with the outside through a low-temperature heat medium channel, and the expander (3) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.
6. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator and a second heat supplier; the compressor (1) is provided with a first circulating working medium channel communicated with the heat supplier (5), the heat supplier (5) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7) through a second heat regenerator (8), then the heat regenerator (7) is also provided with a condensate liquid pipeline which is communicated with the evaporator (6) through a throttle valve (4), the evaporator (6) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7), the compressor (1) is also provided with a second circulating working medium channel which is communicated with a second heat supplier (10), the second heat supplier (10) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7) through an expander (3), the heat regenerator (7) is also provided with a circulating working medium channel which is communicated with the second compressor (2), and the second compressor (2) is also provided with a circulating working medium channel which is communicated with the compressor (1) through the second heat; the heat supply device (5) and the second heat supply device (10) are also respectively communicated with the outside through a heated medium channel, the evaporator (6) is also communicated with the outside through a low-temperature heat medium channel, and the expander (3) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.
7. The single-working medium combined cycle heat pump device mainly comprises a compressor, a second compressor, an expander, a throttle valve, a heat supplier, an evaporator, a heat regenerator, a second heat regenerator, a newly added compressor and a second heat supplier; the compressor (1) is provided with a circulating working medium channel which is communicated with the heat supplier (5), the heat supplier (5) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7) through a second heat regenerator (8), then the heat regenerator (7) is communicated with the evaporator (6) through a condensate liquid pipeline through a throttle valve (4), the evaporator (6) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7), the heat regenerator (7) is also provided with a circulating working medium channel which is communicated with the second compressor (2), the second compressor (2) is also provided with a circulating working medium channel which is communicated with the compressor (1) and the newly added compressor (A) respectively after passing through the second heat regenerator (8), the newly added compressor (A) is also provided with a circulating working medium channel which is communicated with the second heat supplier (10), and the second heat supplier (10) is also provided with a circulating working medium channel which is communicated with the heat regenerator (7); the heat supply device (5) and the second heat supply device (10) are also respectively communicated with the outside through a heated medium channel, the evaporator (6) is also communicated with the outside through a low-temperature heat medium channel, and the expander (3) is connected with the newly-added compressor (A) and transmits power to form the single-working-medium combined cycle heat pump device.
8. A single working medium combined cycle heat pump device is characterized in that in any one of the single working medium combined cycle heat pump devices of claims 1-7, a throttle valve is eliminated, a turbine is added, a condensate pipeline of a regenerator (7) is communicated with an evaporator (6) through a throttle valve (4) and is adjusted to be communicated with the evaporator (6) through a turbine (9), and the turbine (9) is connected with a compressor (1) and transmits power, so that the single working medium combined cycle heat pump device is formed.
9. A single-working medium combined cycle heat pump device is characterized in that in any one of the single-working medium combined cycle heat pump devices of claims 1 to 7, an evaporator and a throttle valve are eliminated, a low-temperature heat medium channel communicated with the outside of the evaporator (6) is eliminated, the evaporator (6) is provided with a circulating working medium channel which is communicated with a heat regenerator (7) and is adjusted to be provided with a steam channel which is communicated with the heat regenerator (7) at the outside, a condensing liquid pipeline arranged on the heat regenerator (7) is communicated with the evaporator (6) through the throttle valve (4) and is adjusted to be provided with a condensing liquid pipeline communicated with the outside of the heat regenerator (7), and the single-working medium combined cycle heat pump device is formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911010749 | 2019-10-16 | ||
| CN2019110107493 | 2019-10-16 |
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|---|---|---|---|
| CN202011152437.9A Pending CN112460830A (en) | 2019-10-16 | 2020-10-15 | Single-working medium combined cycle heat pump device |
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| CN (1) | CN112460830A (en) |
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