CN111623653A - Series PCHE heat exchanger suitable for cylinder arrangement and heat exchange method - Google Patents
Series PCHE heat exchanger suitable for cylinder arrangement and heat exchange method Download PDFInfo
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- CN111623653A CN111623653A CN202010628119.9A CN202010628119A CN111623653A CN 111623653 A CN111623653 A CN 111623653A CN 202010628119 A CN202010628119 A CN 202010628119A CN 111623653 A CN111623653 A CN 111623653A
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- 238000000034 method Methods 0.000 title claims abstract description 8
- DDTVVMRZNVIVQM-UHFFFAOYSA-N 2-(1-azabicyclo[2.2.2]octan-3-yloxy)-1-cyclopentyl-1-phenylethanol;hydrochloride Chemical compound Cl.C1N(CC2)CCC2C1OCC(O)(C=1C=CC=CC=1)C1CCCC1 DDTVVMRZNVIVQM-UHFFFAOYSA-N 0.000 title claims abstract 6
- 238000010248 power generation Methods 0.000 claims abstract description 7
- 238000009792 diffusion process Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims description 61
- 238000009413 insulation Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- -1 nuclear industry Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
-
- 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
-
- 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
-
- 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
Landscapes
- 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 serial PCHE heat exchanger suitable for cylinder arrangement and a heat exchange method, wherein the heat exchanger consists of a hollow cylinder, a front cover plate, a plurality of heat medium plates, a cold medium plate and a rear cover which are sequentially connected into a whole through vacuum diffusion welding from front to back and are arranged in the hollow cylinder, microchannels on the heat medium plates and the cold medium plates are formed by etching, the heat exchanger takes the cylindrical shape as space limitation, a supercritical CO2 power generation system is taken as an application background, the functions of a heat regenerator and a precooler in the supercritical CO2 power generation system are integrated, all external interfaces are arranged on the front cover plate, and the heat exchanger maximally effectively provides a given space.
Description
Technical Field
The invention belongs to the technical field of heat exchange devices, and relates to a series PCHE heat exchanger suitable for cylinder arrangement 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, the heat exchanger is in the requirements of cylindrical arrangement and spatial arrangement, a supercritical CO2 cycle power generation system is used as an application background, the heat exchanger is characterized in that a heat regenerator and a precooler are combined into one, the heat exchanger is realized by one heat exchanger, all external interfaces of the heat exchanger are arranged on a front end cover of the heat exchanger, and other side surfaces of the heat exchanger are not provided with an inlet and an outlet.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a series PCHE heat exchanger suitable for cylinder arrangement can realize the functions of a heat regenerator and a precooler in a supercritical CO2 power generation system, is integrally cylindrical, and comprises a front cover plate A, a plurality of heat medium plates B, a plurality of cold medium plates C and a rear cover plate D which are connected into a whole through vacuum diffusion welding from front to back in sequence, wherein the heat medium plates B and the cold medium plates C are plates with etched micro-channels on metal plate surfaces, and the heat medium plates B and the cold medium plates C are distributed at intervals;
the same positions of the heat medium plate B and the cold medium plate C are uniformly distributed with a CO2 hot side inlet 1, a CO2 cold side outlet 2, a CO2 cold side outlet return port 3, a cooling water inlet 4, a CO2 hot side outlet return port 6, a CO2 hot side outlet 7, a CO2 cold side inlet 8, a cooling water outlet return port 9 and a cooling water outlet 10; the same positions of the front cover plate A as those of the heat medium plate B and the cold medium plate C are provided with a CO2 hot side inlet 1, a CO2 cold side outlet return port 3, a cooling water inlet 4, a CO2 hot side outlet return port 6, a CO2 cold side inlet 8 and a cooling water outlet return port 9; the same positions of the rear cover plate D as those of the heat medium plate B and the cold medium plate C are provided with a CO2 cold side outlet 2, a CO2 cold side outlet return port 3, a CO2 hot side outlet return port 6, a CO2 hot side outlet 7, a cooling water outlet return port 9 and a cooling water outlet 10;
the heat exchanger comprises six external interfaces, all the external interfaces are arranged on one side of a front cover plate A, a CO2 hot side inlet 1 on the front cover plate A is connected with a CO2 hot side inlet pipeline outside the heat exchanger, a CO2 cold side outlet return port 3 is connected with an external CO2 cold side outlet pipeline, a cooling water inlet 4 is connected with an external cooling water inlet pipeline, a CO2 hot side outlet return port 6 is connected with an external CO2 hot side outlet pipeline, a CO2 cold side inlet 8 is connected with an external CO2 cold side inlet pipeline, and a cooling water outlet return port 9 is connected with an external cooling water outlet pipeline.
And three baffling seal heads E are welded on the rear cover plate D and are respectively communicated with a CO2 hot-side outlet 7 and a CO2 hot-side outlet return port 6, a cooling water outlet 10 and a cooling water outlet return port 9, and a CO2 cold-side outlet 2 and a CO2 cold-side outlet return port 3.
And heat insulation lightening holes 5 are formed in the same axial position on the front cover plate A, the heat medium plates B, the cold medium plates C and the rear cover plate D.
According to the heat exchange method of the serial PCHE heat exchanger suitable for the cylinder arrangement, high-temperature CO2 flows into the heat exchanger from a CO2 hot-side inlet 1 of a front cover plate A, is dispersed in each heat medium plate B, flows along a micro-channel in each heat medium plate B, is collected and flows out from a CO2 hot-side outlet 7 of each heat medium plate B, flows to a baffling end enclosure E of a rear cover plate D, and is bent in the baffling end enclosure E to an external pipeline which flows from a CO2 hot-side outlet return port 6 to a CO2 hot-side outlet communicated with the front cover plate A from back to front;
low-temperature CO2 flows into the heat exchanger from a CO2 cold side inlet 8 of the front cover plate A, is dispersed in CO2 channels of each cold medium sheet C, flows along micro channels in the cold medium sheets C, is collected and flows out from a CO2 cold side outlet 2 of the cold medium sheets C, flows to a baffling end enclosure E of the rear cover plate D, and is folded in the baffling end enclosure E to an external pipeline which flows from a CO2 cold side outlet return port 3 to a CO2 cold side outlet communicated with the front cover plate A from back to front;
cooling water flows into the heat exchanger from a cooling water inlet 4 of the front cover plate A, is dispersed in the microchannels of each cold medium plate C, flows along the microchannels in the cold medium plates C, is collected from a cooling water side outlet 10 of the cold medium plates and flows out to a baffling seal head E of the rear cover plate D, and is bent in the baffling seal head E to flow from a cooling water outlet return port 9 to the cooling water outlet external pipeline communicated with the front cover plate A from back to front; and heat exchange is realized.
The invention has the following beneficial effects:
(1) the heat regenerator and the precooler are combined into a whole: the invention integrates two heat exchangers of a heat regenerator and a precooler in a cylindrical heat exchanger, the outlet of the hot side of the heat regenerator CO2 and the inlet of the side of the precooler CO2 are heat medium plate passages of the heat exchanger, and no separate inlet and outlet exist. The arrangement utilizes the cylindrical space to the maximum extent and meets the special requirements of the arrangement of the cylindrical space.
(2) All inlets and outlets of the heat exchanger are converged at one side of the front cover plate of the heat exchanger, and the cylindrical side surface and one side of the rear cover plate are not provided with the inlets and the outlets, so that pipelines do not need to pass around the heat exchanger, and the space is saved to the maximum extent.
Drawings
Fig. 1 is a schematic diagram of a supercritical CO2 power generation system.
Wherein, 1-1 is a generator, 2-1 is a compressor, 3-1 is a turbine, 4-1 is a heat regenerator, 5-1 is a precooler, 6-1 is a cooling water outlet pipeline, 7-1 is a CO2 cold side outlet pipeline, 8-1 is a CO2 hot side inlet pipeline, 9-1 is a CO2 cold side inlet pipeline, 10-1 is a CO2 hot side outlet pipeline, and 11-1 is a cooling water inlet pipeline.
Fig. 2 is a schematic view of a heat exchanger plate structure.
Wherein, A is a hollow cylinder, B is a front cover plate, C is a heat medium plate, D is a cold medium plate, and E is a rear cover plate.
Fig. 3 is a schematic view of the cold medium plate passage and inlet and outlet.
Fig. 4 is a schematic view of a thermal medium sheet passage. Fig. 5 is a schematic view of the back cover plate and the baffle seal head.
FIG. 6 is a schematic view of a front cover plate spout.
FIG. 7 is a schematic view of a rear deck nozzle.
The heat insulation and weight reduction device comprises a CO2 hot side inlet 1, a CO2 cold side outlet 2, a CO2 cold side outlet return port 3, a cooling water inlet 4, a heat insulation and weight reduction hole 5, a CO2 hot side outlet return port 6, a CO2 hot side outlet 7, a CO2 cold side inlet 8, a cooling water outlet return port 9 and a cooling water outlet 10.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in the schematic diagram 1 of the supercritical CO2 system, the heat exchanger can realize the functions of a heat regenerator 4-1 and a precooler 5-1 in a supercritical CO2 power generation system. In the system, CO2 at the hot side of a heat regenerator 4-1 comes from turbine 3-1 exhaust, is discharged from the hot side of a precooler after being released heat by the heat regenerator 4-1 and a precooler 5-1, enters a compressor 2-1, CO2 at an outlet of the compressor 2-1 enters an inlet at the cold side of the heat regenerator 4-1, is discharged from an outlet at the cold side after absorbing heat, and is connected with an inlet and an outlet at the water side of the precooler 5-1 to supply and discharge cooling water outside the system.
As shown in figure 2, the tandem PCHE heat exchanger suitable for cylindrical arrangement is cylindrical in whole, and comprises a front cover plate A, a plurality of heat medium plates B, a plurality of cold medium plates C and a rear cover plate D which are connected into a whole through vacuum diffusion welding in sequence from front to back, wherein the heat medium plates B and the cold medium plates C are plates with etched micro-channels on metal plate surfaces, and the heat medium plates B and the cold medium plates C are distributed at intervals.
As shown in fig. 3 and 4, a CO2 hot side inlet 1, a CO2 cold side outlet 2, a CO2 cold side outlet return port 3, a cooling water inlet 4, a CO2 hot side outlet return port 6, a CO2 hot side outlet 7, a CO2 cold side inlet 8, a cooling water outlet return port 9 and a cooling water outlet 10 are distributed on the same position of the heat medium plate B and the cold medium plate C.
As shown in fig. 6, a CO2 hot side inlet 1, a CO2 cold side outlet return port 3, a cooling water inlet 4, a CO2 hot side outlet return port 6, a CO2 cold side inlet 8 and a cooling water outlet return port 9 are provided on the front cover plate a at the same positions as the hot medium sheet B and the cold medium sheet C.
As shown in fig. 7, a CO2 cold side outlet 2, a CO2 cold side outlet return port 3, a CO2 hot side outlet return port 6, a CO2 hot side outlet 7, a cooling water outlet return port 9 and a cooling water outlet 10 are provided on the rear cover plate D at the same positions as the heat medium sheet B and the cold medium sheet C.
The heat exchanger has six external interfaces, as shown in fig. 2 and fig. 6, all the external interfaces are arranged on one side of a front cover plate a, a hot-side inlet 1 of CO2 on the front cover plate a is connected with an external hot-side inlet pipeline of CO2, a cold-side outlet return port 3 of CO2 is connected with an external cold-side outlet pipeline of CO2, a cooling water inlet 4 is connected with an external cooling water inlet pipeline, a hot-side outlet return port 6 of CO2 is connected with an external hot-side outlet pipeline of CO2, a cold-side inlet 8 of CO2 is connected with an external cold-side inlet pipeline of CO2, and a cooling water outlet return port 9 is connected with an external cooling water outlet pipeline.
As shown in fig. 5 and 7, as a preferred embodiment of the present invention, three baffle heads E are welded on the rear cover plate D, and the three baffle heads E respectively communicate with the hot side outlet 7 of CO2 and the hot side outlet return port 6 of CO2, communicate with the cooling water outlet 10 and the cooling water outlet return port 9, and communicate with the cold side outlet 2 of CO2 and the outlet return port 3 of CO 2.
In a preferred embodiment of the present invention, the front cover plate a, the plurality of heat medium sheets B, the plurality of cold medium sheets C, and the rear cover plate D are provided with heat insulation lightening holes 5 at the same position in the axial direction.
As shown in fig. 2, in the heat exchange method of a tandem PCHE heat exchanger suitable for a cylinder arrangement, high-temperature CO2 flows into the heat exchanger from a CO2 hot-side inlet 1 of a front cover plate a, is dispersed in each heat medium plate B, flows along a microchannel in each heat medium plate B, is collected and flows out from a CO2 hot-side outlet 7 of each heat medium plate B, flows to a baffle head E of a rear cover plate D, and is folded in the baffle head E to an external pipeline communicated with the CO2 hot-side outlet from a back-flow outlet 6 of the CO2 hot-side outlet to the front cover plate a; low-temperature CO2 flows into the heat exchanger from a CO2 cold side inlet 8 of the front cover plate A, is dispersed in CO2 channels of each cold medium sheet C, flows along micro channels in the cold medium sheets C, is collected and flows out from a CO2 cold side outlet 2 of the cold medium sheets C, flows to a baffling end enclosure E of the rear cover plate D, and is folded in the baffling end enclosure E to an external pipeline which flows from a CO2 cold side outlet return port 3 to a CO2 cold side outlet communicated with the front cover plate A from back to front; cooling water flows into the heat exchanger from a cooling water inlet 4 of the front cover plate A, is dispersed in the microchannels of each cold medium plate C, flows along the microchannels in the cold medium plates C, is collected from a cooling water side outlet 10 of the cold medium plates and flows out to a baffling seal head E of the rear cover plate D, and is bent in the baffling seal head E to flow from a cooling water outlet return port 9 to the cooling water outlet external pipeline communicated with the front cover plate A from back to front; and heat exchange is realized.
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 and outlet are located at the rear of the heat exchanger, the positions of the front and rear cover plate upper end enclosures and the position of the connecting pipe only need to be adjusted, and the scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the claims of the present invention should fall within the scope of the present invention.
Claims (4)
1. A series PCHE heat exchanger suitable for cylinder arrangement is characterized in that the 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 a front cover plate (A), a plurality of heat medium plates (B), a plurality of cold medium plates (C) and a rear cover plate (D), which are connected into a whole through vacuum diffusion welding from front to back in sequence, wherein the heat medium plates (B) and the cold medium plates (C) are plates with etched micro-channels on metal plate surfaces, and the heat medium plates (B) and the cold medium plates (C) are distributed at intervals;
the same positions of the heat medium plate (B) and the cold medium plate (C) are uniformly distributed with a CO2 hot side inlet (1), a CO2 cold side outlet (2), a CO2 cold side outlet return port (3), a cooling water inlet (4), a CO2 hot side outlet return port (6), a CO2 hot side outlet (7), a CO2 cold side inlet (8), a cooling water outlet return port (9) and a cooling water outlet (10); the same positions of the front cover plate (A) and the heat medium plate (B) and the cold medium plate (C) are provided with a CO2 hot side inlet (1), a CO2 cold side outlet return port (3), a cooling water inlet (4), a CO2 hot side outlet return port (6), a CO2 cold side inlet (8) and a cooling water outlet return port (9); a CO2 cold side outlet (2), a CO2 cold side outlet return port (3), a CO2 hot side outlet return port (6), a CO2 hot side outlet (7), a cooling water outlet return port (9) and a cooling water outlet (10) are arranged on the same position of the rear cover plate (D) as the hot medium plate (B) and the cold medium plate (C);
the heat exchanger comprises six external interfaces which are all arranged on one side of a front cover plate (A), a CO2 hot side inlet (1) on the front cover plate (A) is connected with a CO2 hot side inlet pipeline outside the heat exchanger, a CO2 cold side outlet return port (3) is connected with an external CO2 cold side outlet pipeline, a cooling water inlet (4) is connected with an external cooling water inlet pipeline, a CO2 hot side outlet return port (6) is connected with an external CO2 hot side outlet pipeline, a CO2 cold side inlet (8) is connected with an external CO2 cold side inlet pipeline, and a cooling water outlet return port (9) is connected with an external cooling water outlet pipeline.
2. The PCHE heat exchanger in series suitable for cylinder arrangement of claim 1, characterized in that three baffling heads (E) are welded on the back cover plate (D), and the three baffling heads (E) are respectively communicated with a CO2 hot side outlet (7) and a CO2 hot side outlet return port (6), a cooling water outlet (10) and a cooling water outlet return port (9), and a CO2 cold side outlet (2) and a CO2 cold side outlet return port (3).
3. The PCHE heat exchanger in series suitable for cylindrical arrangement, according to claim 1, characterized in that the front cover plate (a), the heat medium sheets (B), the cold medium sheets (C) and the rear cover plate (D) are provided with heat insulation lightening holes (5) at the same position in the axial direction.
4. A method of exchanging heat in a PCHE heat exchanger adapted to be arranged in a cylinder in series as claimed in any one of claims 1 to 3, wherein the high temperature CO2 flows into the heat exchanger through the hot side inlet (1) of CO2 of the front cover plate (a), disperses in each heat medium plate (B), flows along the micro-channels in the heat medium plate (B), collects from the hot side outlet (7) of CO2 of the heat medium plate (B), flows to the baffle head (E) of the rear cover plate (D), and bends in the baffle head (E) to the external pipe of the hot side outlet of CO2 communicating from the backward and forward flow return port (356) of the hot side outlet of CO2 to the front cover plate (a);
low-temperature CO2 flows into the heat exchanger from a CO2 cold side inlet (8) of a front cover plate (A), is dispersed in CO2 channels of each cold medium plate (C), flows along micro channels in the cold medium plates (C), is collected and flows out from a CO2 cold side outlet (2) of the cold medium plates (C), flows to a baffling end socket (E) of a rear cover plate (D), and is folded to an external pipeline from a CO2 cold side outlet communicated with the front cover plate (A) from back to front from a CO2 cold side outlet return port (3) in the baffling end socket (E);
cooling water flows into the heat exchanger from a cooling water inlet (4) of the front cover plate (A), is dispersed in the micro-channels of the cold medium plates (C), flows along the micro-channels in the cold medium plates (C), is collected and flows out from a cooling water side outlet (10) of the cold medium plates, flows to a baffling seal head (E) of the rear cover plate (D), and is bent in the baffling seal head (E) to a cooling water outlet external pipeline communicated with the front cover plate (A) from back to front from a cooling water outlet return port (9); and heat exchange is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628119.9A CN111623653B (en) | 2020-07-01 | 2020-07-01 | Series PCHE heat exchanger suitable for cylindrical arrangement and heat exchange method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628119.9A CN111623653B (en) | 2020-07-01 | 2020-07-01 | Series PCHE heat exchanger suitable for cylindrical arrangement and heat exchange method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111623653A true CN111623653A (en) | 2020-09-04 |
| CN111623653B CN111623653B (en) | 2024-10-29 |
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| KR20190038968A (en) * | 2017-10-02 | 2019-04-10 | 한국원자력연구원 | Printed circuit heat exchange module and heat exchanger |
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2020
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| WO2001054805A1 (en) * | 2000-01-25 | 2001-08-02 | Meggitt (Uk) Ltd | Compact reactor with heat exchanger |
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| KR20190038968A (en) * | 2017-10-02 | 2019-04-10 | 한국원자력연구원 | Printed circuit heat exchange module and heat exchanger |
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