CN114322365A - Single-working medium combined cycle heat pump device - Google Patents
Single-working medium combined cycle heat pump device Download PDFInfo
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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 divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with the heat supplier through a high-temperature heat supplier and an expander, and the second path is communicated with the second compressor through a second heat supplier; the second compressor 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 the evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, and the heat regenerator is also provided with a circulating working medium channel which is communicated with the compressor through a high-temperature 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.
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. When heat release mainly depends on a condensation process, the loss of temperature difference between a working medium and a heated medium is large, and the loss of a pressure reduction process of condensate is large or the utilization cost is high; the low-temperature heat load acquisition is greatly influenced by the pressure reduction of the condensate, and the performance index needs to be improved. The gas compression type heat pump device based on the single reverse Brayton cycle requires lower compression ratio, which limits the improvement of heat supply parameters; the low-temperature heat absorption process is heating, so that a large temperature difference loss often exists in a low-temperature link during refrigeration or heating, and the performance index is unreasonable; the adaptability of the heat pump device based on a single working medium sometimes has certain limitation.
Based on the principle of refrigerating or heating simply, actively, safely and efficiently and coping with different refrigerating requirements/heating requirements as much as possible, the invention provides the single-working-medium combined cycle heat pump device which adopts an evaporation process to absorb low-temperature heat load and a temperature changing process to provide high-temperature heat load, fully utilizes the sensible heat of condensate and eliminates the pressure reduction side effect of the condensate as much as possible.
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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a high-temperature heat regenerator; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with the heat supplier through a high-temperature heat supplier and an expander, and the second path is communicated with the second compressor through a second heat supplier; the second compressor 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 the evaporator through a throttle valve, the evaporator is also provided with a circulating working medium channel which is communicated with the heat regenerator, and the heat regenerator is also provided with a circulating working medium channel which is communicated with the compressor through a high-temperature 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.
2. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator and a third heat supplier; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with the heat supplier through a high-temperature heat supplier and an expander, and the second path is communicated with the second compressor through a second heat supplier; the second compressor is also provided with a circulating working medium channel which is communicated with the heat regenerator through a third heat supplier, 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, and the heat regenerator is also provided with a circulating working medium channel which is communicated with the compressor through a high-temperature heat regenerator; the heat supply device, the second heat supply device and the third heat supply device are respectively communicated with the outside through heated medium channels, 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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator, a spray pipe and a second heat regenerator; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supply device, wherein the first path is communicated with the expander through a high-temperature heat regenerator, and the second path is communicated with the second compressor through a second heat supply device; the second compressor also has a circulating working medium channel which is communicated with the heat regenerator through a second heat regenerator and then is divided into two paths, wherein the first path is led out from the middle or the tail end of the heat regenerator, is communicated with the expander through a spray pipe and the second heat regenerator, and is communicated with the evaporator through a throttle valve after being led out from the tail end of the 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.
4. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator and a reheater; the compressor is divided into two paths after a circulating working medium channel is communicated with a heat supplier, wherein the first path is communicated with an expander through a high-temperature heat regenerator, the expander and a circulating working medium channel are communicated with the expander through a reheater, the expander and a circulating working medium channel are communicated with the heat regenerator, and the second path is communicated with a second compressor through a second heat supplier; the second compressor is also provided with a circulating working medium channel which is communicated with the heat regenerator through a reheater, 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, and the heat regenerator is also provided with a circulating working medium channel which is communicated with the compressor through a high-temperature 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.
5. A single working medium combined cycle heat pump device is characterized in that a newly added compressor and a newly added heat supplier are added in any one of the single working medium combined cycle heat pump devices in items 1-4, the communication between a circulating working medium channel of the compressor and the heat supplier is adjusted to be that the circulating working medium channel of the compressor is communicated with the newly added compressor through the newly added heat supplier, the circulating working medium channel of the newly added compressor is communicated with the heat supplier, and a heated medium channel of the newly added heat supplier is communicated with the outside to form the single working medium combined cycle heat pump device.
6. 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 1-4, a newly added heat supply device and a newly added expansion machine are added, a circulating working medium channel of a compressor is communicated with the heat supply device and adjusted to be communicated with the new expansion machine through the newly added heat supply device, the circulating working medium channel of the compressor is communicated with the heat supply device, the newly added expansion machine is communicated with the heat supply device through the circulating working medium channel, the newly added expansion machine is connected with the compressor and transmits power, and a heated medium channel of the newly added heat supply device is communicated with the outside to form the single working medium combined cycle heat pump device.
7. 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 1-6, 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.
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 1-6, 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 second compressor and transmits power to form the single-working medium combined cycle heat pump device.
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-expander, 3-second compressor, 4-throttle valve, 5-heater, 6-second heater, 7-evaporator, 8-regenerator, 9-high temperature regenerator, 10-third heater, 11-spray pipe, 12-second regenerator, 13-reheater, 14-turbine; a-newly adding a compressor, B-newly adding a heat supply device and C-newly adding an expansion machine.
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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a high-temperature heat regenerator; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with the heat supplier 5, wherein the first path is communicated with the heat regenerator 8 through the high-temperature heat regenerator 9 and the expander 2, and the second path is communicated with the second compressor 3 through the second heat supplier 6; the second compressor 3 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8, then the heat regenerator 8 is communicated with the evaporator 7 through a condensate pipeline by the throttle valve 4, the evaporator 7 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8, and the heat regenerator 8 is also provided with a circulating working medium channel which is communicated with the compressor 1 through a high-temperature heat regenerator 9; the heat supplier 5 and the second heat supplier 6 are also respectively communicated with the outside through heated medium channels, the evaporator 7 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 2 and the evaporator 7 enters the heat regenerator 8 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 9 to absorb heat, and then enters the compressor 1 to boost the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 5 and releases heat, and then is divided into two paths, wherein the first path flows through the high-temperature heat regenerator 9 to release heat and flows through the expansion machine 2 to reduce the pressure and do work and then enters the heat regenerator 8, and the second path flows through the second heat supply device 6 to release heat, flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 8 to release heat and condense, flows through the throttle valve 4 to reduce the pressure and enters the evaporator 7; the circulating working medium entering the evaporator 7 absorbs heat and is vaporized, and then enters the heat regenerator 8; the heated medium obtains high-temperature heat load through the heat supplier 5 and the second heat supplier 6, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 7, and the outside and the expander 2 jointly provide power for the compressor 1 and the second compressor 3, 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, the system mainly comprises a compressor, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator and a third heat supplier; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with the heat supplier 5, wherein the first path is communicated with the heat regenerator 8 through the high-temperature heat regenerator 9 and the expander 2, and the second path is communicated with the second compressor 3 through the second heat supplier 6; the second compressor 3 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8 through a third heat supplier 10, then the heat regenerator 8 is communicated with the evaporator 7 through a condensate pipeline through the throttle valve 4, the evaporator 7 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8, and the heat regenerator 8 is also provided with a circulating working medium channel which is communicated with the compressor 1 through a high-temperature heat regenerator 9; the heat supply device 5, the second heat supply device 6 and the third heat supply device 10 are also respectively communicated with the outside through heated medium channels, the evaporator 7 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 2 and the evaporator 7 enters the heat regenerator 8 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 9 to absorb heat, and then enters the compressor 1 to boost the pressure and raise the 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 high-temperature heat regenerator 9 to release heat and flows through the expander 2 to reduce the pressure and do work, and then enters the heat regenerator 8, the second path flows through the second heat supplier 6 to release heat, flows through the second compressor 3 to increase the pressure and the temperature, flows through the third heat supplier 10 and the heat regenerator 8 to gradually release heat and condense, flows through the throttle valve 4 to throttle and reduce the pressure, and enters the evaporator 7; the circulating working medium entering the evaporator 7 absorbs heat and is vaporized, and then enters the heat regenerator 8; the heated medium obtains high-temperature heat load through the heat supplier 5, the second heat supplier 6 and the third heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 7, and the power is provided for the compressor 1 and the second compressor 3 by the outside and the expander 2 together, 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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator, a spray pipe and a second heat regenerator; the compressor 1 is divided into two paths after a circulating working medium channel is communicated with the heat supplier 5, wherein the first path is communicated with the expander 2 through the high-temperature heat regenerator 9, and the second path is communicated with the second compressor 3 through the second heat supplier 6; the second compressor 3 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8 through a second heat regenerator 12 and then divided into two paths, wherein the first path is led out from the middle or the tail end of the heat regenerator 8, passes through a spray pipe 11 and the second heat regenerator 12 and then is communicated with the expander 2 through a middle air inlet port, the second path is led out from the tail end of the heat regenerator 8 and then is communicated with the evaporator 7 through a throttle valve 4, the evaporator 7 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8, the expander 2 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8, and the heat regenerator 8 is also provided with a circulating working medium channel which is communicated with the compressor 1 through a high-temperature heat regenerator 9; the heat supplier 5 and the second heat supplier 6 are also respectively communicated with the outside through heated medium channels, the evaporator 7 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 2 and the evaporator 7 enters the heat regenerator 8 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 9 to absorb heat, and then enters the compressor 1 to boost the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 5 and releases heat, and then is divided into two paths, namely, the first path flows through the high-temperature heat regenerator 9 to release heat and flows through the expansion machine 2 to reduce the pressure and do work and then enters the heat regenerator 8, the second path flows through the second heat supply device 6 to release heat, flows through the second compressor 3 to increase the pressure and the temperature, flows through the second heat regenerator 12 to release heat, flows through the second heat regenerator 12 to partially condense or totally condense and then is divided into two paths, the first path flows through the spray pipe 11 to reduce the pressure and increase the speed, flows through the second heat regenerator 12 to absorb heat, enters the expansion machine 2 to reduce the pressure and do work through the middle air inlet port and then enters the heat regenerator 8, and the second path of condensate or the condensate after continuing to release heat enters the evaporator 7 after throttling by the throttle valve 4; the circulating working medium entering the evaporator 7 absorbs heat and is vaporized, and then enters the heat regenerator 8; the heated medium obtains high-temperature heat load through the heat supplier 5 and the second heat supplier 6, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 7, and the outside and the expander 2 jointly provide power for the compressor 1 and the second compressor 3, 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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator and a reheater; 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 the expander 2 through a high-temperature heat regenerator 9, the expander 2 and the circulating working medium channel are communicated with the expander 2 through a reheater 13, the expander 2 and the circulating working medium channel are communicated with a heat regenerator 8, and the second path is communicated with the second compressor 3 through a second heat supplier 6; the second compressor 3 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8 through a reheater 13, then the heat regenerator 8 is communicated with the evaporator 7 through a condensate pipeline through the throttle valve 4, the evaporator 7 is also provided with a circulating working medium channel which is communicated with the heat regenerator 8, and the heat regenerator 8 is also provided with a circulating working medium channel which is communicated with the compressor 1 through a high-temperature heat regenerator 9; the heat supplier 5 and the second heat supplier 6 are also respectively communicated with the outside through heated medium channels, the evaporator 7 is also communicated with the outside through a low-temperature heat medium channel, and the expander 2 is connected with the compressor 1 and transmits power.
(2) In the process, the circulating working medium discharged by the expander 2 and the evaporator 7 enters the heat regenerator 8 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 9 to absorb heat, and then enters the compressor 1 to boost the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 5 and releases heat, and then is divided into two paths, namely, the first path flows through the high-temperature heat regenerator 9 to release heat, enters the expansion machine 2 to perform pressure reduction and work to a certain degree, then flows through the reheater 13 to absorb heat, enters the expansion machine 2 to perform continuous pressure reduction and work, and then enters the heat regenerator 8, the second path flows through the second heat supply device 6 to release heat, flows through the second compressor 3 to perform pressure increase and temperature increase, flows through the reheater 13 and the heat regenerator 8 to gradually release heat and condense, flows through the throttle valve 4 to perform throttling and pressure reduction, and then enters the evaporator 7; the circulating working medium entering the evaporator 7 absorbs heat and is vaporized, and then enters the heat regenerator 8; the heated medium obtains high-temperature heat load through the heat supplier 5 and the second heat supplier 6, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 7, and the outside and the expander 2 jointly provide power for the compressor 1 and the second compressor 3, 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, in the single-working-medium combined cycle heat pump device shown in fig. 1, a newly added compressor and a newly added heat supplier are added, the compressor 1 is communicated with the heat supplier 5 through a circulating working medium channel, the compressor 1 is communicated with the newly added compressor A through a newly added heat supplier B, the newly added compressor A is communicated with the heat supplier 5 through a circulating working medium channel, and the newly added heat supplier B is communicated with the outside through a heated medium channel.
(2) In the process, the circulating working medium discharged by the expander 2 and the evaporator 7 enters the heat regenerator 8 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 9 to absorb heat, and then enters the compressor 1 to boost the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the newly-added heat supply device B and releases heat, flows through the newly-added compressor A and increases the pressure and the temperature, flows through the heat supply device 5 and releases heat, and then is divided into two paths, wherein the first path flows through the high-temperature heat regenerator 9 to release heat, flows through the expansion machine 2 to reduce the pressure and do work, and then enters the heat regenerator 8, the second path flows through the second heat supply device 6 to release heat, flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 8 to release heat and condense, flows through the throttle valve 4 to reduce the pressure, and then enters the evaporator 7; the circulating working medium entering the evaporator 7 absorbs heat and is vaporized, and then enters the heat regenerator 8; the heated medium obtains high-temperature heat load through the heater 5, the second heater 6 and the newly-added heater B, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 7, and the outside and the expander 2 jointly provide power for the compressor 1, the second compressor 3 and the newly-added compressor A, 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, in the single-working medium combined cycle heat pump device shown in fig. 1, a newly added heat supply device and a newly added expansion machine are added, a circulating working medium channel of a compressor 1 is communicated with a heat supply device 5 and adjusted to be that the compressor 1 is communicated with a circulating working medium channel through a newly added heat supply device B and a newly added expansion machine C, the newly added expansion machine C is communicated with the heat supply device 5 through a circulating working medium channel, the newly added expansion machine C is connected with the compressor 1 and transmits power, and the newly added heat supply device B is communicated with the outside through a heated medium channel.
(2) In the process, the circulating working medium discharged by the expander 2 and the evaporator 7 enters the heat regenerator 8 to absorb heat and raise the temperature, flows through the high-temperature heat regenerator 9 to absorb heat, and then enters the compressor 1 to boost the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the newly-added heat supply device B and releases heat, flows through the newly-added expansion machine C and performs pressure reduction work, flows through the heat supply device 5 and releases heat, and then is divided into two paths, wherein the first path flows through the high-temperature heat regenerator 9 to release heat and flows through the expansion machine 2 to perform pressure reduction work and then enters the heat regenerator 8, the second path flows through the second heat supply device 6 and releases heat, flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 8 to release heat and condense, flows through the throttle valve 4 to perform throttling and pressure reduction, and then enters the evaporator 7; the circulating working medium entering the evaporator 7 absorbs heat and is vaporized, and then enters the heat regenerator 8; the heated medium obtains high-temperature heat load through the heat supplier 5, the second heat supplier 6 and the newly-added heat supplier B, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 7, and the outside, the expander 2 and the newly-added expander C jointly provide power for the compressor 1 and the second compressor 3 to form the single working medium combined cycle heat pump device.
The single-working-medium combined-cycle heat pump apparatus shown in fig. 7 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 7 with the outside is eliminated, the evaporator 7 is communicated with a heat regenerator 8 through a circulating working medium channel, the evaporator 7 is adjusted to be communicated with the heat regenerator 8 through a steam channel, the heat regenerator 8 is communicated with the evaporator 7 through a throttle valve 4, and the heat regenerator 8 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 8, the circulating working medium discharged by the expander 2 enters the heat regenerator 8, two paths of circulating working media flow through the heat regenerator 8 to absorb heat and raise the temperature, flow through the high-temperature heat regenerator 9 to absorb heat and raise the temperature, and then enter the compressor 1 to increase the pressure and raise the temperature; the circulating working medium discharged by the compressor 1 flows through the heat supply device 5 and releases heat, and then is divided into two paths, wherein the first path flows through the high-temperature heat regenerator 9 to release heat, flows through the expansion machine 2 to reduce the pressure and do work, and then enters the heat regenerator 8, and the second path flows through the second heat supply device 6 to release heat, flows through the second compressor 3 to increase the pressure and the temperature, flows through the heat regenerator 8 to release heat and is condensed, and then is discharged outwards; the heated medium obtains high-temperature heat load through the heat supplier 5 and the second heat supplier 6, external steam provides low-temperature heat load through the inlet and outlet flow, and the outside and the expander 2 jointly provide power for the compressor 1 and the second compressor 3, 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. 8 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 8 is communicated with an evaporator 7 through a throttle valve 4, the condensed liquid pipeline of the heat regenerator 8 is adjusted to be communicated with an evaporator 6 through a turbine 14, and the turbine 14 is connected with a second compressor 3 and transmits power.
(2) Compared with the work flow of the single-working medium combined cycle heat pump device shown in fig. 1, the difference in the flow is that: the condensate discharged by the heat regenerator 8 flows through a turbine 14 to reduce the pressure and do work, and then enters the evaporator 7; the work output by the turbine 14 is supplied to the second compressor 3 as power, forming a single-working-medium combined-cycle heat pump apparatus.
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 low-temperature heat load acquisition is greatly 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 single working medium is beneficial to production and storage; the operation cost is reduced, and the flexibility of circulation regulation is improved.
(7) 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.
(8) 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 is solved.
(9) The application range is wide, the energy supply requirement can be well met, and the working medium and the working parameters are flexibly matched.
(10) The mechanical compression type heat pump technology is expanded, and the utilization value and range of mechanical energy in the refrigeration and heat supply fields are improved.
Claims (8)
1. The single-working medium combined cycle heat pump device mainly comprises a compressor, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator and a high-temperature heat regenerator; the compressor (1) is provided with a circulating working medium channel which is communicated with the heat supplier (5) and then divided into two paths, wherein the first path is communicated with the heat supplier (8) through the high-temperature heat supplier (9) and the expander (2), and the second path is communicated with the second compressor (3) through the second heat supplier (6); the second compressor (3) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8), then the heat regenerator (8) is communicated with the evaporator (7) through a condensate pipeline by a throttle valve (4), the evaporator (7) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8), and the heat regenerator (8) is also provided with a circulating working medium channel which is communicated with the compressor (1) through a high-temperature heat regenerator (9); the heat supply device (5) and the second heat supply device (6) are also respectively communicated with the outside through a heated medium channel, the evaporator (7) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) 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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator and a third heat supplier; the compressor (1) is provided with a circulating working medium channel which is communicated with the heat supplier (5) and then divided into two paths, wherein the first path is communicated with the heat supplier (8) through the high-temperature heat supplier (9) and the expander (2), and the second path is communicated with the second compressor (3) through the second heat supplier (6); the second compressor (3) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8) through a third heat supplier (10), then the heat regenerator (8) is communicated with the evaporator (7) through a condensate pipeline, the evaporator (7) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8), and the heat regenerator (8) is also provided with a circulating working medium channel which is communicated with the compressor (1) through a high-temperature heat regenerator (9); the heat supply device (5), the second heat supply device (6) and the third heat supply device (10) are respectively communicated with the outside through a heated medium channel, the evaporator (7) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) 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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator, a spray pipe and a second heat regenerator; the compressor (1) is divided into two paths after a circulating working medium channel is communicated with the heat supplier (5), wherein the first path is communicated with the expander (2) through the high-temperature heat regenerator (9), and the second path is communicated with the second compressor (3) through the second heat supplier (6); the second compressor (3) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8) through a second heat regenerator (12) and then divided into two paths, wherein the first path is led out from the middle or the tail end of the heat regenerator (8), passes through a spray pipe (11) and the second heat regenerator (12), is communicated with the expander (2) through a middle air inlet port, the second path is led out from the tail end of the heat regenerator (8), is communicated with the evaporator (7) through a throttle valve (4), the evaporator (7) is also provided with the circulating working medium channel which is communicated with the heat regenerator (8), the expander (2) is also provided with the circulating working medium channel which is communicated with the heat regenerator (8), and the heat regenerator (8) is also provided with the circulating working medium channel which is communicated with the compressor (1) through a high-temperature heat regenerator (9); the heat supply device (5) and the second heat supply device (6) are also respectively communicated with the outside through a heated medium channel, the evaporator (7) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) 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, an expander, a second compressor, a throttle valve, a heat supplier, a second heat supplier, an evaporator, a heat regenerator, a high-temperature heat regenerator and a reheater; the compressor (1) is provided with a circulating working medium channel which is communicated with the heat supplier (5) and then divided into two paths, wherein the first path is communicated with the expander (2) through a high-temperature heat regenerator (9), the expander (2) is also provided with a circulating working medium channel which is communicated with the expander (2) through a reheater (13), the expander (2) is also provided with a circulating working medium channel which is communicated with a heat regenerator (8), and the second path is communicated with the second compressor (3) through a second heat supplier (6); the second compressor (3) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8) through a reheater (13), then the heat regenerator (8) is communicated with the evaporator (7) through a condensate pipeline through a throttle valve (4), the evaporator (7) is also provided with a circulating working medium channel which is communicated with the heat regenerator (8), and the heat regenerator (8) is also provided with a circulating working medium channel which is communicated with the compressor (1) through a high-temperature heat regenerator (9); the heat supply device (5) and the second heat supply device (6) are also respectively communicated with the outside through a heated medium channel, the evaporator (7) is also communicated with the outside through a low-temperature heat medium channel, and the expander (2) is connected with the compressor (1) and transmits power to form the single-working-medium combined cycle heat pump device.
5. A single working medium combined cycle heat pump device is characterized in that any one of the single working medium combined cycle heat pump devices in claims 1-4 is additionally provided with a newly-added compressor and a newly-added heat supplier, the communication between the compressor (1) and the heat supplier (5) is adjusted to be that the compressor (1) is provided with a circulating working medium channel which is communicated with the newly-added compressor (A) through the newly-added heat supplier (B), the newly-added compressor (A) is provided with a circulating working medium channel which is communicated with the heat supplier (5), and the newly-added heat supplier (B) is also provided with a heated medium channel which is communicated with the outside, so that the single working medium combined cycle heat pump device is formed.
6. A single working medium combined cycle heat pump device is characterized in that a newly added heat supplier and a new expansion machine are added in any one of the single working medium combined cycle heat pump devices in claims 1-4, a circulating working medium channel of a compressor (1) is communicated with a heat supplier (5) and adjusted to be communicated with a circulating working medium channel of the compressor (1) through the newly added heat supplier (B) and a new expansion machine (C), the new expansion machine (C) is communicated with the heat supplier (5) through a circulating working medium channel, the new expansion machine (C) is connected with the compressor (1) and transmits power, and a heated medium channel of the newly added heat supplier (B) is communicated with the outside to form the single working medium combined cycle heat pump device.
7. 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 6, an evaporator and a throttle valve are eliminated, a low-temperature heat medium channel communicated with the outside of the evaporator (7) is eliminated, the evaporator (7) is provided with a circulating working medium channel which is communicated with a heat regenerator (8) and is adjusted to be provided with a steam channel which is communicated with the heat regenerator (8) at the outside, a condensing liquid pipeline arranged on the heat regenerator (8) is communicated with the evaporator (7) through the throttle valve (4) and is adjusted to be provided with a condensing liquid pipeline communicated with the outside of the heat regenerator (8), and the single-working medium combined cycle heat pump device is formed.
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 1-6, a throttle valve is eliminated, a turbine is added, a condenser pipe of a regenerator (8) is communicated with an evaporator (7) through a throttle valve (4) and is adjusted to be communicated with the evaporator (7) through a turbine (14), the condenser pipe of the regenerator (8) is communicated with the evaporator (7), and the turbine (14) is connected with a second compressor (3) and transmits power, so that the single working medium combined cycle heat pump device is formed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2643252Y (en) * | 2003-06-18 | 2004-09-22 | 北京清源世纪科技有限公司 | Middle and high temperature powerdriven compressive heat pump equipment |
| CN105953473A (en) * | 2015-04-13 | 2016-09-21 | 李华玉 | Bidirectional thermal cycle and second type of heat-driven compression heat pump |
| CN110953749A (en) * | 2018-11-12 | 2020-04-03 | 李华玉 | High-efficiency steam compression type heat pump |
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2021
- 2021-11-11 CN CN202111372650.5A patent/CN114322365A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643252Y (en) * | 2003-06-18 | 2004-09-22 | 北京清源世纪科技有限公司 | Middle and high temperature powerdriven compressive heat pump equipment |
| CN105953473A (en) * | 2015-04-13 | 2016-09-21 | 李华玉 | Bidirectional thermal cycle and second type of heat-driven compression heat pump |
| CN110953749A (en) * | 2018-11-12 | 2020-04-03 | 李华玉 | High-efficiency steam compression type heat pump |
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