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Accession Number
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DE2012-1036269
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Title
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Progress Report for Diffusion Welding of the NGNP Process Application Heat Exchangers.
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Publication Date
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Dec 2011
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Media Count
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50p
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Personal Author
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D. E. Clark M. V. Glazoff R. E. Mizia T. E. Lister T. L. Trowbridge
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Abstract
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The U.S. Department of Energy selected the high temperature gas-cooled reactor as the basis for the Next Generation Nuclear Plant (NGNP). The NGNP will demonstrate the use of nuclear power for electricity, hydrogen production, and process heat applications. The NGNP Project is currently investigating the use of metallic, diffusion welded, compact heat exchangers to transfer heat from the primary (reactor side) heat transport system to the secondary heat transport system. An intermediate heat exchanger will transfer this heat to downstream applications such as hydrogen production, process heat, and electricity generation. The channeled plates that make up the heat transfer surfaces of the intermediate heat exchanger will have to be assembled into an array by diffusion welding. This report describes the preliminary results of a scoping study that evaluated the diffusion welding process parameters and the resultant mechanical properties of diffusion welded joints using Alloy 800H. The long-term goal of the program is to progress towards demonstration of small heat exchanger unit cells fabricated with diffusion welds.
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Keywords
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Chromium
Diffusion welding
Electricity
Heat exchangers
Incoloy 800H
Mechanical properties
Next Generation Nuclear Plant Project
Nuclear power plants
Oxidation
Process heat
Welded joints
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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77H - Reactor Engineering & Nuclear Power Plants
71J - Iron & Iron Alloys
41F - Joining
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Corporate Author
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Idaho National Laboratory, Idaho Falls, ID.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1219
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Contract Number
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DE-AC07-05ID14517
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