Qualification of primary loop manifold of a liquid metal thermoelectric converter

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The mechanical cycling test was required to verify the integrity of the welded joints and the thin wall tube bends in the primary loop manifold assembly of a four pack thermo electric module and to help establish structural and mechanical requirements of any possible redesign. The test section was subjected to more severe loading conditions than will be experienced during actual operating conditions. The test was a mechanical simulation of the differential thermal expansion which occurs due to the approximately 600{degrees} F temperature differential in the subassembly. The actual load exerted on the test section represented this deflection. The effects ... continued below

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Bryant, E P; Cottam, A E; Ettenson, N J; Harves, T O; Kenney, J; Letchford, T A et al. June 10, 1969.

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Description

The mechanical cycling test was required to verify the integrity of the welded joints and the thin wall tube bends in the primary loop manifold assembly of a four pack thermo electric module and to help establish structural and mechanical requirements of any possible redesign. The test section was subjected to more severe loading conditions than will be experienced during actual operating conditions. The test was a mechanical simulation of the differential thermal expansion which occurs due to the approximately 600{degrees} F temperature differential in the subassembly. The actual load exerted on the test section represented this deflection. The effects on the joints and tube material were observed. The test was conducted on a test segment of manifold designed to duplicate two of the flexible elbows; the transition joints between the elbows and the tubular module inner clad; and the welded joints of the elbows to the primary loop header. The assembled test segment and hold-down bracket are shown. The bracket was mounted to the base of the Universal Test Machine. Dial indicators measured the relative displacement between the line of applied load (through the vertical axis of the primary loop header) and the attachment point at the holddown bracket. In the first test, the load was applied in fifty pound increments until the relative displacement of nine mils was measured between the loop header and the welded joint on the feedline elbow. The remaining tests were cycling the header assembly at increasing relative displace ment. The summary of these tests are tabulated. The testing had no noticeable affect on the structural integrity of the weldment.

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  • Report No.: WANL-TMI-1981
  • Grant Number: None
  • DOI: 10.2172/1113990 | External Link
  • Office of Scientific & Technical Information Report Number: 1113990
  • Archival Resource Key: ark:/67531/metadc869158

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 10, 1969

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

Description Last Updated

  • Oct. 19, 2017, 3:46 p.m.

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Bryant, E P; Cottam, A E; Ettenson, N J; Harves, T O; Kenney, J; Letchford, T A et al. Qualification of primary loop manifold of a liquid metal thermoelectric converter, report, June 10, 1969; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc869158/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.