CN111721150A - Compact multi-stage series PCHE heat exchanger and heat exchange method - Google Patents
Compact multi-stage series PCHE heat exchanger and heat exchange method Download PDFInfo
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- CN111721150A CN111721150A CN202010730018.2A CN202010730018A CN111721150A CN 111721150 A CN111721150 A CN 111721150A CN 202010730018 A CN202010730018 A CN 202010730018A CN 111721150 A CN111721150 A CN 111721150A
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- precooler
- heat
- regenerator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a compact multi-stage series PCHE heat exchanger and a heat exchange method, wherein the heat exchanger comprises a heat regenerator, a precooler and a connecting pipeline, the heat regenerator and the precooler comprise a front cover plate, a plurality of heat medium sheets, a cold medium sheet and a rear cover respectively, microchannels on the heat medium sheets and the cold medium sheets are formed by etching, the heat exchanger takes a cylindrical shape as space limitation, a supercritical CO2 power generation system is taken as an application background, the functions of the heat regenerator and the precooler in the supercritical CO2 power generation system are integrated, and the heat exchanger system effectively utilizes a given space to the maximum extent.
Description
Technical Field
The invention belongs to the technical field of heat exchange devices, and relates to a compact multi-stage series PCHE heat exchanger and a heat exchange method.
Background
Printed circuit plate heat exchangers (PCHE) belong to the category of microchannel plate heat exchangers. The PCHE has the advantages of compact structure, high temperature resistance, high pressure resistance, safety, reliability and the like, and is widely applied in the fields of refrigeration and air conditioning, petroleum and natural gas, nuclear industry, chemical industry, electric power industry and the like.
At present, most of common PCHE heat exchangers are square, and inlet and outlet pipe orifices are distributed on 4 different side surfaces of the heat exchanger, so that inlet and outlet pipelines of the heat exchanger are dispersed, and the occupied space is large. In addition, generally, one PCHE heat exchanger only realizes the function of a heat exchanger of one loop, and multiple heat exchanges of a plurality of loops are realized by a plurality of independent PCHE heat exchangers, so that more connecting pipes for inlets and outlets of the heat exchangers are generated, and more space is occupied.
In some special application occasions, such as ships, offshore platforms and the like, due to the fact that space is narrow and special requirements are made on arrangement shapes, the space utilization rate of a common square independent PCHE heat exchanger is too low, and a specially designed heat exchanger is needed to meet special requirements.
Disclosure of Invention
In order to solve the problems existing in the prior art, the invention aims to provide a compact tandem PCHE heat exchanger and a heat exchange method suitable for the requirements of cylindrical arrangement, which take a supercritical CO2 cycle power generation system as an application background, the heat exchanger is arranged in a cylindrical way as a space arrangement requirement, and the arrangement furthest utilizes a cylindrical space and meets the special requirements of the cylindrical space arrangement.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a compact multi-stage series PCHE heat exchanger can realize the functions of a heat regenerator and a precooler in a supercritical CO2 power generation system, is integrally cylindrical, and comprises the heat regenerator, the precooler, an inlet and outlet pipeline and a connecting pipe; the heat regenerator comprises a heat regenerator front cover plate 1.1, a plurality of heat regenerator cold medium plates 1.2, a plurality of heat regenerator hot medium plates 1.3 and a heat regenerator rear cover plate 1.4 which are sequentially welded and connected into a whole from front to back, the precooler comprises a precooler front cover plate 2.1, a plurality of precooler heat medium plates 2.2, a plurality of precooler cold medium plates 2.3 and a precooler rear cover plate 2.4 which are welded and connected into a whole from front to back in sequence, the inlet and outlet pipelines comprise a heat regenerator hot side inlet pipeline 3, a precooler hot side outlet pipeline 5, a heat regenerator cold side outlet pipeline 6, a heat regenerator cold side inlet pipeline 7, a cooling water outlet pipeline 8 and a cooling water inlet pipeline 9, the connecting pipe is a heat regenerator hot side outlet-precooler hot side inlet connecting pipe 4, and the heat regenerator and the precooler are connected together through the heat regenerator hot side outlet-precooler hot side inlet connecting pipe 4; the heat regenerator cold medium plate 1.2, the heat regenerator hot medium plate 1.3, the precooler hot medium plate 2.2 and the precooler cold medium plate 2.3 are plates with micro-channels etched on metal plate surfaces, the heat regenerator cold medium plate 1.2 and the heat regenerator hot medium plate 1.3 are distributed at intervals, and the precooler hot medium plate 2.2 and the heat regenerator cold medium plate 2.3 are distributed at intervals;
the same positions of the regenerator cold medium plate 1.2 and the regenerator hot medium plate 1.3 are distributed with a CO2 hot side inlet a, a CO2 cold side outlet b, a CO2 cold side inlet c and a CO2 hot side outlet d; a CO2 hot side inlet a and a CO2 cold side outlet b are arranged on the same position of the regenerator front cover plate 1.1 as the regenerator cold medium plate 1.2 and the regenerator heat medium plate 1.3, and a CO2 cold side inlet c and a CO2 hot side outlet d are arranged on the same position of the regenerator back cover plate 1.4 as the regenerator cold medium plate 1.2 and the regenerator heat medium plate 1.3;
a hot side inlet e, a hot water outlet f, a cold water inlet g and a hot side outlet h are distributed at the same positions of the precooler heat medium plate 2.2 and the precooler cold medium plate 2.3; a hot side inlet e and a hot water outlet f are arranged on the same position of the precooler front cover plate 2.1 as the precooler heat medium plate 2.2 and the precooler cold medium plate 2.3, and a cold water inlet g and a hot side outlet h are arranged on the same position of the precooler rear cover plate 2.4 as the precooler heat medium plate 2.2 and the precooler cold medium plate 2.3;
one end of a hot side inlet pipeline 3 of the heat regenerator is connected with a CO2 hot side inlet a on a front cover plate 1.1 of the heat regenerator, the other end of the hot side inlet pipeline is an external pipeline interface, one end of a hot side outlet-precooler hot side inlet connecting pipe 4 of the heat regenerator is connected with a CO2 hot side outlet d of a rear cover plate of the heat regenerator, the other end of the hot side inlet connecting pipe is connected with a hot side inlet e of a front cover plate 2.1 of the precooler, a hot side outlet pipeline 5 of the precooler is connected with a hot side outlet h of a rear cover plate 2.4 of the precooler, the other end of the hot side outlet connecting pipe is an external pipeline interface, a cold side outlet pipeline 6 of the heat regenerator is connected with a CO2 cold side outlet b on the front cover plate 1.1 of the heat regenerator, the other end of the hot side inlet pipeline interface is an external pipeline interface, a cold side inlet pipeline 7 of the heat regenerator is connected with a CO2, the cooling water inlet pipeline 9 is connected with a cold water inlet g on the rear cover plate 2.4 of the precooler, and the other end of the cooling water inlet pipeline is an external pipeline interface.
The heat regenerator cold medium plate 1.2, the heat regenerator hot medium plate 1.3, the precooler hot medium plate 2.2 and the precooler cold medium plate 2.3 are in a fan shape in an integral stroke, and the micro-channel strokes are radially distributed on the fan surface and shuttle to different fan-shaped areas to exchange heat.
The welded connection is a vacuum diffusion welded connection.
According to the heat exchange method of the compact multi-stage series PCHE heat exchanger, external high-temperature CO2 enters a heat regenerator heat medium plate 1.3 through a heat regenerator hot side inlet pipeline 3, enters a precooler heat medium plate 2.2 through a heat regenerator hot side outlet-precooler hot side inlet connecting pipe 4 after heat is released, and flows out of the heat exchanger through a precooler hot side outlet pipeline 5 after being further cooled to be used by external equipment; external low-temperature CO2 enters a regenerator cold medium plate 1.2 through a regenerator cold side inlet pipeline 7, absorbs heat and then flows out of the heat exchanger through a regenerator cold side outlet pipeline 6 for use by external equipment; external cooling water enters the precooler cold medium plate 2.3 through a cooling water inlet pipeline 9, absorbs heat at the CO2 side and then flows out of the heat exchanger through a cooling water outlet pipeline 8.
The invention has the following beneficial effects:
(1) suitable for the cylindrical zone arrangement: the invention integrates two heat exchangers of a heat regenerator and a precooler in a cylinder, and inlet and outlet pipelines of the heat regenerator and the precooler are also in the cylinder area. The arrangement utilizes the cylindrical space to the maximum extent and meets the special requirements of the arrangement of the cylindrical space.
(2) The heat exchanger plate is in a fan shape in the whole process, the cold end is not contacted with the hot end, direct heat transfer between the cold end and the hot end is reduced, and the problem of thermal stress of the heat exchanger is also solved.
Drawings
Fig. 1 is an exploded view of a regenerator.
Wherein, 1.1 is a regenerator front cover plate, 1.2 is a regenerator cold medium plate, 1.3 is a regenerator hot medium plate, and 1.4 is a regenerator rear cover plate.
Fig. 2 is an exploded view of the precooler.
Wherein, 2.1 is a precooler front cover plate, 2.2 is a precooler heat medium plate, 2.3 is a precooler cold medium plate, and 2.4 is a precooler rear cover plate.
Fig. 3 is an overall schematic diagram of the heat exchanger system.
Wherein 3 is a hot side inlet pipeline of the heat regenerator, 4 is a hot side outlet of the heat regenerator-a hot side inlet connecting pipe of the precooler, 5 is a hot side outlet pipeline of the precooler, 6 is a cold side outlet pipeline of the heat regenerator, 7 is a cold side inlet pipeline of the heat regenerator, 8 is a cooling water outlet pipeline, 9 is a cooling water inlet pipeline,
fig. 4 is a schematic view of a regenerator thermal media slab.
Fig. 5 is a schematic diagram of a regenerator cold medium slab.
Fig. 6 is a schematic view of a regenerator front cover plate.
Fig. 7 is a schematic view of a regenerator back cover plate.
Fig. 8 is a schematic view of a precooler sheet of thermal medium.
Fig. 9 is a schematic diagram of a precooler sheet of cold medium.
Fig. 10 is a schematic view of a precooler front cover plate.
FIG. 11 is a schematic view of a precooler rear cover plate.
Wherein, a is a CO2 hot side inlet, b is a CO2 cold side outlet, c is a CO2 cold side inlet, d is a CO2 hot side outlet, e is a hot side inlet, f is a hot water outlet, g is a cold water inlet, and h is a hot side outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2 and 3, the compact multi-stage serial PCHE heat exchanger of the present invention can realize the functions of a heat regenerator and a precooler in a supercritical CO2 power generation system, and the heat exchanger system is cylindrical as a whole and comprises a heat regenerator, a precooler, an inlet and outlet pipeline and a connecting pipe; the heat regenerator comprises a heat regenerator front cover plate 1.1, a plurality of heat regenerator cold medium plates 1.2, a plurality of heat regenerator hot medium plates 1.3 and a heat regenerator rear cover plate 1.4 which are sequentially welded and connected into a whole from front to back, the precooler comprises a precooler front cover plate 2.1, a plurality of precooler heat medium plates 2.2, a plurality of precooler cold medium plates 2.3 and a precooler rear cover plate 2.4 which are welded and connected into a whole from front to back in sequence, the inlet and outlet pipelines comprise a heat regenerator hot side inlet pipeline 3, a precooler hot side outlet pipeline 5, a heat regenerator cold side outlet pipeline 6, a heat regenerator cold side inlet pipeline 7, a cooling water outlet pipeline 8 and a cooling water inlet pipeline 9, the connecting pipe is a heat regenerator hot side outlet-precooler hot side inlet connecting pipe 4, and the heat regenerator and the precooler are connected together through the heat regenerator hot side outlet-precooler hot side inlet connecting pipe 4; the heat regenerator cold medium plate 1.2, the heat regenerator hot medium plate 1.3, the precooler hot medium plate 2.2 and the precooler cold medium plate 2.3 are plates with micro-channels etched on metal plate surfaces, the heat regenerator cold medium plate 1.2 and the heat regenerator hot medium plate 1.3 are distributed at intervals, and the precooler hot medium plate 2.2 and the heat regenerator cold medium plate 2.3 are distributed at intervals.
As shown in fig. 4, fig. 6 and fig. 7, the same positions of the regenerator cold medium slab 1.2 and the regenerator hot medium slab 1.3 are distributed with a CO2 hot side inlet a, a CO2 cold side outlet b, a CO2 cold side inlet c and a CO2 hot side outlet d; a CO2 hot side inlet a and a CO2 cold side outlet b are arranged on the same position of the regenerator front cover plate 1.1 as the regenerator cold medium plate 1.2 and the regenerator heat medium plate 1.3, and a CO2 cold side inlet c and a CO2 hot side outlet d are arranged on the same position of the regenerator back cover plate 1.4 as the regenerator cold medium plate 1.2 and the regenerator heat medium plate 1.3.
As shown in fig. 8, 9, 10 and 11, a hot side inlet e, a hot water outlet f, a cold water inlet g and a hot side outlet h are distributed on the same positions of the precooler heat medium sheet 2.2 and the precooler cold medium sheet 2.3; the same positions of the precooler front cover plate 2.1 and the precooler heat medium plate 2.2 and the precooler cold medium plate 2.3 are provided with a hot side inlet e and a hot water outlet f, and the same positions of the precooler rear cover plate 2.4 and the precooler heat medium plate 2.2 and the precooler cold medium plate 2.3 are provided with a cold water inlet g and a hot side outlet h.
One end of a hot side inlet pipeline 3 of the heat regenerator is connected with a CO2 hot side inlet a on a front cover plate 1.1 of the heat regenerator, the other end of the hot side inlet pipeline is an external pipeline interface, one end of a hot side outlet-precooler hot side inlet connecting pipe 4 of the heat regenerator is connected with a CO2 hot side outlet d of a rear cover plate of the heat regenerator, the other end of the hot side inlet connecting pipe is connected with a hot side inlet e of a front cover plate 2.1 of the precooler, a hot side outlet pipeline 5 of the precooler is connected with a hot side outlet h of a rear cover plate 2.4 of the precooler, the other end of the hot side outlet connecting pipe is an external pipeline interface, a cold side outlet pipeline 6 of the heat regenerator is connected with a CO2 cold side outlet b on the front cover plate 1.1 of the heat regenerator, the other end of the hot side inlet pipeline interface is an external pipeline interface, a cold side inlet pipeline 7 of the heat regenerator is connected with a CO2, the cooling water inlet pipeline 9 is connected with a cold water inlet g on the rear cover plate 2.4 of the precooler, and the other end of the cooling water inlet pipeline is an external pipeline interface.
As shown in fig. 4, 5, 8 and 9, the heat exchanger plate of the present invention has an overall fan shape, the microchannel passes are distributed radially in the fan surface, and the fluid shuttles back and forth in the arrow direction to different fan-shaped areas for heat exchange.
As shown in fig. 3, in the heat exchange method of the compact multi-stage series connection PCHE heat exchanger of the present invention, external high temperature CO2 enters a heat regenerator heat medium plate 1.3 through a heat regenerator hot side inlet pipe 3, enters a precooler heat medium plate 2.2 through a heat regenerator hot side outlet-precooler hot side inlet connecting pipe 4 after releasing heat, and further flows out of the heat exchanger for use by external equipment through a precooler hot side outlet pipe 5 after being cooled; external low-temperature CO2 enters a regenerator cold medium plate 1.2 through a regenerator cold side inlet pipeline 7, absorbs heat and then flows out of the heat exchanger through a regenerator cold side outlet pipeline 6 for use by external equipment; external cooling water enters the precooler cold medium plate 2.3 through a cooling water inlet pipeline 9, absorbs heat at the CO2 side and then flows out of the heat exchanger through a cooling water outlet pipeline 8.
The above detailed description is only a preferred embodiment of the present invention, and if the supply direction of the external pipe of the heat exchanger is changed, for example, the cooling water inlet/outlet is behind the heat exchanger, only the direction of the connecting pipe needs to be adjusted, which cannot limit the scope of the present invention. All equivalent changes and modifications made according to the scope of the present invention should fall within the scope of the present invention.
Claims (4)
1. A compact multi-stage series PCHE heat exchanger is characterized in that the heat exchanger system can realize the functions of a heat regenerator and a precooler in a supercritical CO2 power generation system, the whole heat exchanger system is cylindrical, and the system comprises the heat regenerator, the precooler, an inlet and outlet pipeline and a connecting pipe; the precooler comprises a heat regenerator front cover plate (1.1), a plurality of heat regenerator cold medium plates (1.2), a plurality of heat regenerator hot medium plates (1.3) and a heat regenerator rear cover plate (1.4) which are sequentially welded and connected into a whole from front to back, the precooler comprises a precooler front cover plate (2.1), a plurality of precooler hot medium plates (2.2), a plurality of precooler cold medium plates (2.3) and a precooler rear cover plate (2.4) which are sequentially welded and connected into a whole from front to back, the inlet and outlet pipeline comprises a heat regenerator hot side inlet pipeline (3), a precooler hot side outlet pipeline (5), a heat regenerator cold side outlet pipeline (6), a heat regenerator cold side inlet pipeline (7), a cooling water outlet pipeline (8) and a cooling water inlet pipeline (9), the connecting pipes are precooler hot side outlet-precooler hot side inlet connecting pipes (4), and the heat regenerator are connected with each other through the heat regenerator hot side outlet-precooler hot side inlet connecting pipes (4) Starting; the heat regenerator cold medium plate (1.2), the heat regenerator hot medium plate (1.3), the precooler hot medium plate (2.2) and the precooler cold medium plate (2.3) are plates with micro-channels etched on metal plate surfaces, the heat regenerator cold medium plate (1.2) and the heat regenerator hot medium plate (1.3) are distributed at intervals, and the precooler hot medium plate (2.2) and the heat regenerator cold medium plate (2.3) are distributed at intervals;
the same positions of the regenerator cold medium plate (1.2) and the regenerator hot medium plate (1.3) are distributed with a CO2 hot side inlet (a), a CO2 cold side outlet (b), a CO2 cold side inlet (c) and a CO2 hot side outlet (d); a CO2 hot side inlet (a) and a CO2 cold side outlet (b) are arranged on the same position of a regenerator front cover plate (1.1) as a regenerator cold medium plate (1.2) and a regenerator hot medium plate (1.3), and a CO2 cold side inlet (c) and a CO2 hot side outlet (d) are arranged on the same position of a regenerator rear cover plate (1.4) as the regenerator cold medium plate (1.2) and the regenerator hot medium plate (1.3);
a hot side inlet (e), a hot water outlet (f), a cold water inlet (g) and a hot side outlet (h) are distributed at the same positions of the precooler heat medium plate (2.2) and the precooler cold medium plate (2.3); a hot side inlet (e) and a hot water outlet (f) are arranged on the same position of the precooler front cover plate (2.1) as the precooler heat medium plate (2.2) and the precooler cold medium plate (2.3), and a cold water inlet (g) and a hot side outlet (h) are arranged on the same position of the precooler rear cover plate (2.4) as the precooler heat medium plate (2.2) and the precooler cold medium plate (2.3);
one end of a hot side inlet pipeline (3) of the heat regenerator is connected with a CO2 hot side inlet (a) on a front cover plate (1.1) of the heat regenerator, the other end of the hot side inlet pipeline is an external pipeline interface, one end of a hot side outlet-precooler hot side inlet connecting pipe (4) of the heat regenerator is connected with a CO2 hot side outlet (d) of a rear cover plate of the heat regenerator, the other end of the hot side outlet pipeline is connected with a hot side inlet (e) of the front cover plate (2.1) of the precooler, a precooler hot side outlet pipeline (5) is connected with a hot side outlet (h) of the rear cover plate (2.4) of the precooler, the other end of the hot side outlet pipeline is an external pipeline interface, a cold side outlet pipeline (6) of the heat regenerator is connected with a CO2 cold side outlet (b) on the front cover plate (1.1) of the heat regenerator, the other end of the cold side inlet pipeline interface is connected with a CO2 inlet (c) on the rear cover plate (1.4) of the heat regenerator, the other end of the cold, the other end is an external pipeline interface, a cooling water inlet pipeline (9) is connected with a cold water inlet (g) on a rear cover plate (2.4) of the precooler, and the other end is the external pipeline interface.
2. The compact multi-stage series PCHE heat exchanger according to claim 1, characterized in that the regenerator cold medium plate (1.2) and the regenerator hot medium plate (1.3) and the precooler hot medium plate (2.2) and the precooler cold medium plate (2.3) are in a fan shape as a whole, and the microchannel passes are radially distributed on the fan surface and shuttle to different fan-shaped areas to exchange heat.
3. The compact, multi-stage, in-line PCHE heat exchanger of claim 1, wherein the welded connection is a vacuum diffusion welded connection.
4. The heat exchange method of the compact multi-stage serial PCHE heat exchanger is characterized in that external high-temperature CO2 enters the heat regenerator heat medium plate (1.3) through a heat regenerator hot side inlet pipe (3), enters the precooler heat medium plate (2.2) through a heat regenerator hot side outlet-precooler hot side inlet connecting pipe (4) after releasing heat, and flows out of the heat exchanger for external equipment through a precooler hot side outlet pipe (5) after being further cooled; external low-temperature CO2 enters a regenerator cold medium plate (1.2) through a regenerator cold side inlet pipeline (7), absorbs heat and then flows out of the heat exchanger through a regenerator cold side outlet pipeline (6) for use by external equipment; external cooling water enters the precooler cold medium plate (2.3) through a cooling water inlet pipeline (9), absorbs heat at the CO2 side and then flows out of the heat exchanger through a cooling water outlet pipeline (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010730018.2A CN111721150A (en) | 2020-07-27 | 2020-07-27 | Compact multi-stage series PCHE heat exchanger and heat exchange method |
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| CN202010730018.2A CN111721150A (en) | 2020-07-27 | 2020-07-27 | Compact multi-stage series PCHE heat exchanger and heat exchange method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155503A (en) * | 2021-04-30 | 2021-07-23 | 武汉理工大学 | Supercritical carbon dioxide heat exchange performance test platform for printed circuit board type heat exchanger |
| CN113335019A (en) * | 2021-06-15 | 2021-09-03 | 东风汽车集团股份有限公司 | Integrated heat exchanger of automobile heat management system |
| WO2023216808A1 (en) * | 2022-05-07 | 2023-11-16 | 西安热工研究院有限公司 | Lead-bismuth supercritical carbon dioxide heat exchange system and method |
| CN117490455A (en) * | 2024-01-02 | 2024-02-02 | 陕西益信伟创智能科技有限公司 | Radiator for printed circuit board |
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2020
- 2020-07-27 CN CN202010730018.2A patent/CN111721150A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155503A (en) * | 2021-04-30 | 2021-07-23 | 武汉理工大学 | Supercritical carbon dioxide heat exchange performance test platform for printed circuit board type heat exchanger |
| CN113155503B (en) * | 2021-04-30 | 2024-03-08 | 武汉理工大学 | Supercritical carbon dioxide heat exchange performance test platform for printed circuit board type heat exchanger |
| CN113335019A (en) * | 2021-06-15 | 2021-09-03 | 东风汽车集团股份有限公司 | Integrated heat exchanger of automobile heat management system |
| CN113335019B (en) * | 2021-06-15 | 2022-09-30 | 东风汽车集团股份有限公司 | Integrated heat exchanger of automobile heat management system |
| WO2023216808A1 (en) * | 2022-05-07 | 2023-11-16 | 西安热工研究院有限公司 | Lead-bismuth supercritical carbon dioxide heat exchange system and method |
| CN117490455A (en) * | 2024-01-02 | 2024-02-02 | 陕西益信伟创智能科技有限公司 | Radiator for printed circuit board |
| CN117490455B (en) * | 2024-01-02 | 2024-03-15 | 陕西益信伟创智能科技有限公司 | Radiator for printed circuit board |
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