CN210197776U - Cold and hot combined supply system - Google Patents
Cold and hot combined supply system Download PDFInfo
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- CN210197776U CN210197776U CN201921275030.8U CN201921275030U CN210197776U CN 210197776 U CN210197776 U CN 210197776U CN 201921275030 U CN201921275030 U CN 201921275030U CN 210197776 U CN210197776 U CN 210197776U
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- heat
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- heat pump
- refrigeration
- absorption
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 86
- 238000005057 refrigeration Methods 0.000 claims abstract description 71
- 239000002826 coolant Substances 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002918 waste heat Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 239000000498 cooling water Substances 0.000 claims description 27
- 239000006096 absorbing agent Substances 0.000 claims description 26
- 238000005086 pumping Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 7
- 230000008676 import Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model discloses a combined cooling and heating system, which comprises a second-class absorption heat pump and an absorption refrigerator, wherein a cooling medium outlet and a cooling medium inlet of a heat pump condenser of the second-class absorption heat pump are respectively communicated with a driving waste heat inlet and a driving waste heat outlet of a refrigeration generator of the absorption refrigerator to form a first circulation loop; the waste heat in the heat pump condenser of the second-class absorption heat pump is recovered to be used as the driving heat source of the absorption refrigerator, so that the energy maximization recycling of the heat pump condenser in the second-class absorption heat pump can be realized, meanwhile, the driving heat source after heat exchange of the refrigeration generator of the absorption refrigerator is used as the inlet cold water of the heat pump condenser again, the two are matched to realize cascade utilization, the heat utilization rate of a refrigerator system is greatly improved, the system can simultaneously supply heat source and cold quantity, and the system is suitable for various occasions and has higher use flexibility.
Description
Technical Field
The utility model relates to a heat recovery technical field, in particular to cold and hot antithetical couplet supplies system.
Background
The second type of absorption heat pump is a heat-raising type heat pump, which utilizes a large amount of medium-temperature heat sources to generate a small amount of high-temperature useful heat energy. The medium-low temperature heat energy is used for driving, the heat which is less than the medium-temperature heat source but higher than the medium-temperature heat source is prepared by using the heat potential difference of a large amount of medium-temperature heat sources and low-temperature heat sources, and part of the medium-low heat energy is transferred to a higher temperature level, so that the utilization grade of the heat sources is improved.
The second type absorption heat pump comprises a generator, a condenser, an absorber and an evaporator, wherein the generator and the absorber form a lithium bromide solution loop, concentrated solution in the generator is absorbed and released heat in the absorber, so that heated medium flowing through a heat exchange tube in the absorber is heated, the temperature of the heated medium is increased to become high-temperature liquid or high-temperature gas after being heated, and the high-temperature liquid or the high-temperature gas flows out of the absorber to meet the use requirement of the outside.
The dilute solution flowing out of the absorber is heated in the generator, and part of water is evaporated to become the concentrated solution again. The evaporated water forms water vapor to enter the condenser, and is cooled by cooling water in the condenser, and the cooling water is heated to flow out of the condenser, is cooled in the cooling tower and returns to the condenser again.
From the above description, it can be seen that, while the second type absorption heat pump is used for producing a high-temperature heat source, part of the energy is dissipated in the condenser, which results in energy waste.
How to reduce the energy loss as much as possible while obtaining a high-grade heat source and further improve the economic benefit is a technical problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cold and hot confession system that allies oneself with, including second type absorption heat pump and absorption formula refrigerator, cooling medium export, the cooling medium import of the heat pump condenser of second type absorption heat pump communicate respectively absorption formula refrigerator's refrigeration generator's drive waste heat import, drive waste heat export to form first circulation circuit.
The utility model discloses the cooling medium export of well second class absorption heat pump's heat pump condenser, cooling medium import communicate absorption refrigerator's refrigeration generator's drive waste heat import, drive waste heat export respectively to form first circulation circuit. That is to say, the high temperature cooling medium after heat exchange and temperature rise in the heat pump condenser in the second type absorption heat pump flows into the refrigeration generator through the pipeline, heats the dilute solution in the refrigeration generator to evaporate part of water in the dilute solution of the refrigeration generator, in the heat exchange process, the temperature of the high temperature cooling medium is reduced to become low temperature cooling medium, the low temperature cooling medium flows out of the refrigeration generator, and then returns to the heat pump condenser of the second type absorption heat pump again, the steam generated by cooling the heat pump generator in the heat pump condenser is liquid water, in the heat exchange process, the low temperature cooling medium is heated again to become the high temperature cooling medium, and the high temperature cooling medium circulates in turn.
The utility model discloses above-mentioned technical scheme's beneficial effect as follows:
the waste heat in the heat pump condenser of the second type absorption heat pump is recovered to be used as the driving heat source of the absorption refrigerator, so that the energy maximization recycling of the heat pump condenser in the second type absorption heat pump can be realized, meanwhile, the driving heat source after heat exchange of the refrigeration generator of the absorption refrigerator is used as the inlet cold water of the heat pump condenser again, the two are matched to realize cascade utilization, and the heat utilization rate of the refrigerator system is greatly improved. Furthermore, this cold and hot combined supply system's absorption chiller can provide cold volume to the external world, and second class absorption heat pump externally provides the high temperature quality heat source, thereby the utility model discloses in the system that provides realize supplying with heat source and cold volume simultaneously, applicable in multiple occasion, use the flexibility than higher.
Optionally, at least one first switching valve is further installed on the first circulation loop and used for connecting or disconnecting the first circulation loop.
Optionally, the absorption refrigerator includes a refrigeration generator, a refrigeration condenser, a refrigeration absorber, a refrigeration evaporator and a cooling tower, the cooling tower is used for cooling the cooling water flowing out from the refrigeration condenser and the refrigeration absorber, and the cooling water heat exchange pipeline of the refrigeration condenser and the cooling water heat exchange pipeline of the refrigeration absorber are connected in series or in parallel to the cooling tower.
Optionally, a cooling medium outlet or a cooling medium inlet of a heat pump condenser of the second type absorption heat pump is provided with a pumping component for providing power for circulating the cooling medium.
Optionally, two ends of a cold water heat exchange tube of the refrigeration evaporator of the absorption refrigerator are respectively used for forming a circulation loop with a cooling water pipeline of an external air conditioner through a tube joint.
Optionally, the system further comprises a heat exchanger, the heat exchanger comprises a first heat exchange channel and a second heat exchange channel for exchanging heat between two fluids, a medium inlet and a medium outlet of the first heat exchange channel are respectively communicated with a cooling medium outlet and a cooling medium inlet of the second absorption heat pump, and the first heat exchange channel is connected with the driving waste heat pipeline of the absorption refrigerator in series or in parallel.
Optionally, the first heat exchange channel is connected in parallel with a driving waste heat pipeline of the absorption chiller and then connected to a cooling medium outlet and a cooling medium inlet of the second-type absorption heat pump, and the first heat exchange channel and the second-type absorption heat pump form a second circulation loop; when the system is in a heating mode, the first circulation loop is disconnected, and the second circulation loop is communicated; when the system is in a refrigeration mode, the first circulation loop is connected, and the second circulation loop is disconnected.
Optionally, at least one of the medium inlet pipeline and the medium outlet pipeline of the first heat exchange channel of the heat exchanger is provided with a second switch valve for connecting or disconnecting the corresponding pipeline section.
Optionally, the heat exchanger includes a plate heat exchanger, and the second heat exchange channel is used to form a circulation flow path with an external heating pipeline.
Drawings
Fig. 1 is a schematic structural diagram of a combined cooling and heating system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a combined cooling and heating system according to another embodiment of the present invention.
Wherein, the one-to-one correspondence between component names and reference numbers in fig. 1 and 2 is as follows:
1-second type absorption heat pump; 11-a heat pump generator; 12-a heat pump condenser; 13-a heat pump absorber; 14-a heat pump evaporator; 15-pumping means; 16-a heat exchanger;
2-absorption refrigerator; 21-a refrigeration generator; 22-a refrigeration condenser; 23-a refrigeration absorber; 24-a refrigeration evaporator; 25-a cooling tower; 26-on-off valve a; 27-on-off valve b; 28-solution pump;
3-a heat exchanger; 31-on-off valve c; 32-switch valve d.
Detailed Description
On the basis of the technical problem that the second type absorption heat pump described in the background art has energy loss, detailed research is carried out on a specific working condition of the second type absorption heat pump, specifically, the temperature of water flowing into a heat pump condenser of the second type absorption heat pump in the specific working condition is 55 ℃, after cooling and heat exchange, the temperature of cooling water is increased to 85 ℃, the temperature of the cooling water after temperature increase needs to be reduced by a cooling tower and then is increased to 55 ℃, and then the cooling water returns to the heat pump condenser for heat exchange.
In the absorption refrigerator, the temperature of the driving heat source required is about 85 degrees celsius, and it is obvious that the temperature of the driving heat source after heat exchange can be controlled to 55 degrees celsius by controlling the amount of heat exchange. The technical scheme and the technical effect are continuously described by taking the absorption refrigerator as an example to output cold water required by the air conditioner.
On the basis of the discovery, the cold and heat combined supply system is provided, and can reduce the energy loss of the second-class absorption heat pump as much as possible, supply high-grade heat sources and cold quantities simultaneously, and meet various requirements.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a combined cooling and heating system according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a combined cooling and heating system according to another embodiment of the present invention.
The utility model provides a cold and hot confession system that allies oneself with, including second type absorption heat pump and absorption refrigerator 2.
The second type absorption heat pump 1 basically has the same working principle as the prior art, and generates a small amount of high-temperature heat energy which can be utilized by utilizing a large amount of intermediate-temperature waste heat. The high-low temperature heat energy is used for driving, under the condition of low-temperature cooling water, heat which is less than heat of a low-medium temperature heat source but higher than the heat of a low-medium temperature heat source is produced, and part of low-medium grade heat energy is transferred to high grade, so that the utilization rate of the heat energy is improved.
Specifically, the second type absorption heat pump 1 includes a heat pump generator 11, a heat pump condenser 12, a heat pump absorber 13 and a heat pump evaporator 14, and the detailed structure of the above components is not described in detail herein, and reference may be made to the prior art. The heating energy inside the heat pump generator 11 is external medium-temperature waste heat, that is, the external medium-temperature waste heat is used as a driving heat source of the heat pump generator 11, and in some embodiments, the medium-temperature waste heat may be industrial waste hot water. The water vapor evaporated in the heat pump generator 11 enters the heat pump condenser 12 to exchange heat with the cooling water introduced into the heat pump condenser 12 to form liquid water.
The heat pump evaporator 14 mainly provides water vapor for the heat pump absorber 13, wherein intermediate-temperature waste heat is also introduced into the heat pump evaporator 14 to serve as a driving heat source, the intermediate-temperature waste heat heats water in the heat pump evaporator 14 to form steam, and the steam is introduced into the heat pump absorber 13 to dilute the concentrated solution flowing into the heat pump absorber 13. The medium forming water vapor in the heat pump evaporator 14 is derived from liquid water formed in the heat pump condenser 12, that is, condensed water in the heat pump condenser 12 is pumped into the heat pump evaporator 14 through the refrigerant pump, and is heated and evaporated by intermediate-temperature waste heat to form steam.
The driving heat source in the heat pump evaporator 14 and the heat pump generator 11 may be the same external medium-temperature waste heat source, and the heat source may sequentially flow through the heat pump evaporator 14 and the heat pump generator 11, that is, the heat source heat exchange tubes in the heat pump evaporator 14 and the heat pump generator 11 are connected in series, and of course, the heat source heat exchange tubes in the heat pump evaporator and the heat pump generator may also be connected in parallel. The intermediate-temperature waste heat shown in fig. 1 is the driving heat source, and an embodiment in which heat source heat exchange pipes in the heat pump evaporator 14 and the heat pump generator 11 are connected in series is given.
As shown in fig. 1 and 2, the second-type absorption heat pump 1 includes three flow paths, i.e., a driving heat source, a medium to be heated, and a cooling medium, in addition to the solution circulation flow path.
The absorption chiller 2 includes a refrigeration generator 21, a refrigeration condenser 22, a refrigeration absorber 23, and a refrigeration evaporator 24. The absorption refrigerator 2 mainly obtains cold water required by an external air conditioner, and the cold water is obtained by introducing water with the temperature of 12 ℃ through a refrigeration evaporator 24 and cooling the water to 7 ℃ and then flowing out. Both ends of a cold water heat exchange pipe of the refrigeration evaporator 24 of the absorption refrigerator 2 are respectively used for forming a circulation loop with a cooling water pipeline of an external air conditioner through pipe joints. The operating principle of the absorption chiller 2 is described as follows: the refrigerant water is evaporated in the refrigeration evaporator 24 to produce cold water, the evaporated refrigerant water vapor is absorbed by the concentrated solution in the refrigeration absorber 23, and the solution (dilute solution) which has absorbed the refrigerant water vapor and becomes dilute is sent to the refrigeration generator 21 by the solution pump 28 through the heat exchanger. The dilute solution is heated inside the refrigeration generator 21 to become a concentrated solution. The concentrated solution enters the refrigeration absorber 23 after being subjected to heat exchange with the dilute solution through the heat exchanger, and absorbs refrigerant water vapor generated by evaporation in the refrigeration evaporator 24. The refrigerant vapor generated by the refrigeration generator 21 is cooled by the cooling water in the refrigeration condenser 22 to form condensed water which is returned to the refrigeration evaporator.
The solution in the second-type absorption heat pump 1 and the solution in the absorption refrigerator 2 may be a lithium bromide solution, or may be other refrigerant solutions.
The utility model discloses the coolant export of well second class absorption heat pump 1's heat pump condenser 12, coolant import communicate respectively absorption chiller 2's refrigeration generator 21's drive waste heat import, drive waste heat export to form first circulation circuit. That is, the high temperature cooling medium after heat exchange and temperature rise in the heat pump condenser 12 in the second type absorption heat pump 1 flows into the refrigeration generator 21 through the pipeline, heats the dilute solution in the refrigeration generator 21 to evaporate part of water in the dilute solution of the refrigeration generator 21, in the heat exchange process, the temperature of the high temperature cooling medium is reduced to become the low temperature cooling medium, the low temperature cooling medium flows out of the refrigeration generator 21, and then returns to the heat pump condenser 12 of the second type absorption heat pump 1 again, the steam generated by cooling the heat pump generator 11 in the heat pump condenser 12 is liquid water, in the heat exchange process, the low temperature cooling medium is heated again to become the high temperature cooling medium, and the high temperature cooling medium circulates in turn.
The waste heat in the heat pump condenser 12 of the second-class absorption heat pump 1 is recovered to be used as the driving heat source of the absorption refrigerator 2, so that the heat pump condenser 12 in the second-class absorption heat pump 1 can be maximally recovered and utilized, meanwhile, the driving heat source after heat exchange of the refrigeration generator 21 of the absorption refrigerator 2 is used as the inlet cooling water of the heat pump condenser 12 again, and the two are matched to realize cascade utilization, so that the heat utilization rate of the refrigerator system is greatly improved. Furthermore, this cold and hot cogeneration system's absorption chiller 2 can provide cold volume to the external world, and second type absorption heat pump 1 provides the high temperature quality heat source, thereby the utility model discloses in the system that provides can realize supplying with heat source and cold volume simultaneously, applicable in multiple occasion, use the flexibility than higher.
In a specific embodiment, at least one first switch valve may be further installed on the first circulation circuit for connecting or disconnecting the first circulation circuit. In fig. 2, a specific embodiment of providing two first switching valves is shown, the inlet pipeline of the refrigeration generator 21 and the outlet pipeline of the refrigeration generator 21 are respectively provided with a switching valve a26 and a switching valve b27, and by controlling the switching states of the switching valve a26 and the switching valve b27, not only can the operation requirements of the unit be met, but also the maintenance of the whole system can be facilitated.
As described above, the absorption coolant includes the refrigeration generator 21, the refrigeration condenser 22, the refrigeration absorber 23, the refrigeration evaporator 24 and the cooling tower 25, the cooling tower 25 is used for cooling the cooling water flowing out of the refrigeration condenser 22 and the refrigeration absorber 23, and the cooling water heat exchange pipeline of the refrigeration condenser 22 and the cooling water heat exchange pipeline of the refrigeration absorber 23 are connected to the cooling tower 25 in series or in parallel.
That is, the cooling water heat-exchange line of the refrigeration absorber 23, the cooling water heat-exchange line of the refrigeration condenser 22, and the cooling tower 25 may form a serial circulation loop; of course, the cooling water heat exchange line of the refrigeration absorber 23 and the cooling water heat exchange line of the refrigeration condenser 22 may be connected in parallel.
When the absorption chiller 2 does not need to output cold, the following arrangement is also made herein in order to further utilize the heat in the heat pump condenser 12.
In a specific embodiment, the combined cooling and heating system may further include a heat exchanger 3, the heat exchanger 3 includes a first heat exchange channel and a second heat exchange channel for exchanging heat between two fluids, a medium inlet and a medium outlet of the first heat exchange channel are respectively communicated with a cooling medium outlet and a cooling medium inlet of the second-type absorption heat pump 1, and the first heat exchange channel is connected in series or in parallel with the driving waste heat pipeline of the absorption chiller 2.
The second heat exchange channel is used for forming a circulating flow path with an external heating pipeline. Namely, the external heating hot water exchanges heat with the high-temperature cooling water flowing into the first heat exchange channel in the process of flowing through the second heat exchange channel, and the heating hot water is heated and flows to an external heating pipeline. The high temperature cooling water is cooled down after heat exchange and returns to the heat pump condenser 12 again.
For the heat exchanger and the absorption refrigerator 2, the first heat exchange channel and the driving waste heat pipeline of the absorption refrigerator 2 can be connected in series, and when refrigerating, no medium is introduced into the second heat exchange channel of the heat exchanger, namely, the cooling medium only flows through the heat exchanger but does not exchange heat; similarly, when heating, the cooling medium only flows through the internal pipe of the refrigeration generator 21 but does not exchange heat, and only exchanges heat with the medium in the second heat exchange channel in the heat exchanger. Of course, the first heat exchange channel and the driving waste heat pipeline of the absorption refrigerator 2 can be connected in parallel, and then connected with the cooling tower 25.
In the above embodiments, the first heat exchange channel is connected in parallel with the driving waste heat pipeline of the absorption chiller 2 and then connected to the cooling medium outlet and the cooling medium inlet of the second-type absorption heat pump 1, and the first heat exchange channel and the second-type absorption heat pump 1 form a second circulation loop; when the system is in a heating mode, the first circulation loop is disconnected, and the second circulation loop is communicated; when the system is in a refrigeration mode, the first circulation loop is connected, and the second circulation loop is disconnected.
The connection and disconnection of the circulation circuit may be achieved by a switching valve. Further, at least one of the medium inlet pipeline and the medium outlet pipeline of the first heat exchange channel of the heat exchanger is provided with a second switch valve for connecting or disconnecting the corresponding pipeline section. In fig. 2, an embodiment is shown in which two second on-off valves are provided, and the inlet and the outlet of the heat exchanger are provided with an on-off valve c31 and an on-off valve d32, respectively. The connection or disconnection of the first circulation circuit and the second circulation circuit is realized by controlling the switching valve a, the switching valve b, the switching valve c and the switching valve d, and the maintenance of different parts is realized.
The heat exchanger is preferably a plate heat exchanger, and the second heat exchange channel of the plate heat exchanger is used for forming a circulation flow path with an external heating pipeline.
In the above embodiments, the cooling medium outlet or cooling medium inlet of the heat pump condenser 12 of the second absorption heat pump 1 is equipped with a pumping component for providing power for circulating the cooling medium.
The control of each power component and each execution component of the combined cooling and heating system can be automatically controlled through the controller.
In addition, the second type absorption heat pump also can comprise a pumping part and a heat exchanger, wherein the pumping part is used for providing solution circulation power. The heat exchanger can improve the heat exchange efficiency of the system.
The above is to the present invention provides a combined cooling and heating system. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A combined cooling and heating system is characterized by comprising a second-class absorption heat pump and an absorption refrigerator, wherein a cooling medium outlet and a cooling medium inlet of a heat pump condenser of the second-class absorption heat pump are respectively communicated with a driving waste heat inlet and a driving waste heat outlet of a refrigeration generator of the absorption refrigerator to form a first circulation loop.
2. The combined cooling and heating system according to claim 1, wherein at least one first switching valve is further installed on the first circulation loop to connect or disconnect the first circulation loop.
3. The combined cooling and heating system according to claim 2, wherein the absorption refrigerator comprises a refrigeration generator, a refrigeration condenser, a refrigeration absorber, a refrigeration evaporator and a cooling tower, the cooling tower is used for cooling the cooling water flowing out of the refrigeration condenser and the refrigeration absorber, and the cooling water heat exchange pipeline of the refrigeration condenser and the cooling water heat exchange pipeline of the refrigeration absorber are connected to the cooling tower in series or in parallel.
4. The combined cooling and heating system according to claim 1, wherein a cooling medium outlet or a cooling medium inlet of a heat pump condenser of the second absorption heat pump is provided with a pumping component for providing power for circulating the cooling medium.
5. The combined cooling and heating system according to claim 1, wherein both ends of a cold water heat exchange pipe of a refrigeration evaporator of the absorption refrigerator are respectively used for forming a circulation loop with a cooling water pipeline of an external air conditioner through pipe joints.
6. A combined cooling and heating system according to any one of claims 1 to 5, further comprising a heat exchanger, wherein the heat exchanger comprises a first heat exchange channel and a second heat exchange channel for exchanging heat between two fluids, a medium inlet and a medium outlet of the first heat exchange channel are respectively communicated with a cooling medium outlet and a cooling medium inlet of the second absorption heat pump, and the first heat exchange channel is connected with a driving waste heat pipeline of the absorption chiller in series or in parallel.
7. The combined cooling and heating system according to claim 6, wherein the first heat exchange channel is connected to a cooling medium outlet and a cooling medium inlet of the second absorption heat pump after being connected in parallel with a driving waste heat pipeline of the absorption chiller, and the first heat exchange channel and the second absorption heat pump form a second circulation loop; when the system is in a heating mode, the first circulation loop is disconnected, and the second circulation loop is communicated; when the system is in a refrigeration mode, the first circulation loop is connected, and the second circulation loop is disconnected.
8. The combined cooling and heating system according to claim 6, wherein at least one of the medium inlet pipeline and the medium outlet pipeline of the first heat exchange channel of the heat exchanger is provided with a second switch valve for connecting or disconnecting the corresponding pipeline section.
9. The combined cooling and heating system according to claim 6, wherein the heat exchanger comprises a plate heat exchanger, and the second heat exchange passage is used for forming a circulation flow path with an external heating pipeline.
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| CN201921275030.8U CN210197776U (en) | 2019-08-07 | 2019-08-07 | Cold and hot combined supply system |
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| CN201921275030.8U CN210197776U (en) | 2019-08-07 | 2019-08-07 | Cold and hot combined supply system |
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| CN210197776U true CN210197776U (en) | 2020-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669946A (en) * | 2021-08-12 | 2021-11-19 | 上海碳索能源服务股份有限公司 | Absorption type cold-heat combined supply system for hot filling workshop |
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2019
- 2019-08-07 CN CN201921275030.8U patent/CN210197776U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669946A (en) * | 2021-08-12 | 2021-11-19 | 上海碳索能源服务股份有限公司 | Absorption type cold-heat combined supply system for hot filling workshop |
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