Composite structure printed circuit board type heat exchanger core body

A technology of printed circuit boards and composite structures, applied in the direction of indirect heat exchangers, heat exchanger types, heat exchange equipment, etc., can solve problems such as inability to meet the stringent requirements of intermediate heat The effect of strong pressure capacity and small microchannel size

Pending Publication Date: 2020-04-24
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional shell-and-tube and plate-fin heat exchangers cannot meet the above-mentioned stringent requirements for intermediate heat exchangers in advanced nuclear power and photothermal power generation systems

Method used

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  • Composite structure printed circuit board type heat exchanger core body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] A core body of a printed circuit board heat exchanger with a composite structure, consisting of 3 etched plates 2, 3 partitions 5, 3 finned plates 4 and 3 partitions 5, which are sequentially arranged from top to bottom, closely bonded, and stacked After assembly, it is formed by diffusion welding.

[0034] The etching plate 2 is a 316L stainless steel sheet of 100mm×50mm×2mm, on which is provided 2 The micro-channel 1 through which the medium circulates; the micro-channel 1 is processed by a photochemical etching process, and is composed of 12 micro-channels arranged in parallel at equal intervals (1mm). 2mm semicircle.

[0035] The separator 5 is an 800HT nickel-based alloy sheet of 100mm×50mm×2mm.

[0036] The finned plate 4 is stamped and formed from a 0.2mm thick 800HT nickel-based alloy sheet. The straight fins have a height of 5mm and a pitch of 1.8mm. The finned plate 4 is 100mm long and 38.2mm wide.

[0037] The seal 3 is an 800HT nickel-based alloy square b...

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PUM

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Abstract

The invention relates to a composite structure printed circuit board type heat exchanger core body. A plurality of etching plates, fin plates and septa are alternately stacked and arranged in the height direction, the upper surfaces of the etching plates are etched with micro-flow channels for sCO2 medium to flow, seals are arranged on the left and right sides of the fin plates, an interlayer is formed by each fin plate, the seals on the left and right sides and the septa on the upper and lower sides, and a channel for molten salt or liquid metal medium to flow is formed. The composite structure printed circuit board type heat exchanger core body can be resistant to high temperature, high pressure and large pressure difference, and has the characteristics of large heat load, high heat fluxdensity, compactness and high efficiency.

Description

technical field [0001] The invention relates to the technical field of heat exchange devices, in particular to a composite structure printed circuit board heat exchanger core. Background technique [0002] supercritical carbon dioxide (sCO 2 ) Brayton cycle has the characteristics of high energy density, high heat transfer efficiency, simple system, and compact layout. It is very suitable for fourth-generation advanced nuclear reactors (molten salt reactors, solid-cooled fast reactors) and photothermal power generation systems. sCO 2 The Brayton cycle has great development prospects in improving the safety of nuclear power units (avoiding solid-water reactions), reducing unit investment, improving solar thermal utilization efficiency, and reducing solar thermal power costs. [0003] In molten salt reactors, solid-cooled fast reactors, and solar thermal sCO 2 In the power generation system, the intermediate heat exchanger plays an important role in transferring heat betwee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D9/00F28F3/10
CPCF28D9/00F28F3/10
Inventor 张磊高炜吴帅帅白文刚李红智姚明宇
Owner XIAN THERMAL POWER RES INST CO LTD
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