Study of a Loop Heat Pipe Using Neutron Radiography

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An explanation is given of what a loop heat pipe (LHP) is, and how it works. It is then shown that neutron imaging (both real time neutron radioscopy and single exposure neutron radiography) is an effective experimental tool for the study of LHPs. Specifically, neutron imaging has helped to identify and correct a cooling water distribution problem in the condenser, and has enabled visualization of two-phase flow (liquid and vapor) in various components of the LHP. In addition, partial wick dry-out, a phenomenon of great importance in the effective operation of LHPs, has been identified with neutron imaging. It is ... continued below

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Conroy, C. Thomas; El-Ganayni, A. A.; Riley, David R.; Cimbala, John M.; Jack S. Brenizer, Jr.; Chuang, Abel Po-Ya et al. August 1, 2001.

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Description

An explanation is given of what a loop heat pipe (LHP) is, and how it works. It is then shown that neutron imaging (both real time neutron radioscopy and single exposure neutron radiography) is an effective experimental tool for the study of LHPs. Specifically, neutron imaging has helped to identify and correct a cooling water distribution problem in the condenser, and has enabled visualization of two-phase flow (liquid and vapor) in various components of the LHP. In addition, partial wick dry-out, a phenomenon of great importance in the effective operation of LHPs, has been identified with neutron imaging. It is anticipated that neutron radioscopy and radiography will greatly contribute to our understanding of LHP operation, and will lead to improvement of LHP modeling and design.

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INIS; OSTI as DE00799222

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  • Journal Name: Submitted to Journal of Applied Radiation and Isotopes; Other Information: Submitted to Journal of Applied Radiation and Isotopes

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  • Report No.: B-T-3386
  • Grant Number: AC11-98PN38206
  • Office of Scientific & Technical Information Report Number: 799222
  • Archival Resource Key: ark:/67531/metadc738118

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  • August 1, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 29, 2016, 9:20 p.m.

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Conroy, C. Thomas; El-Ganayni, A. A.; Riley, David R.; Cimbala, John M.; Jack S. Brenizer, Jr.; Chuang, Abel Po-Ya et al. Study of a Loop Heat Pipe Using Neutron Radiography, article, August 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc738118/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.