Assessment of Screen-Covered Grooved Sodium Heat Pipes for Microreactor Applications
- 13 November 2021
- journal article
- research article
- Published by Taylor & Francis Ltd in Nuclear Technology
- Vol. 208 (8), 1301-1310
- https://doi.org/10.1080/00295450.2021.1977085
Abstract
New nuclear reactor designs that incorporate heat pipes are being investigated for possible near-term deployment in terrestrial applications. This study explores the use of screen-covered axially grooved sodium heat pipes and their applicability for providing heat removal for microreactors. A sodium working fluid is appropriate for microreactors operating in the 5 to 20 MW(thermal) range at approximately 650°C. HTPIPE, a legacy software code, was validated for the case of screen-covered grooves and used to perform steady-state analyses to determine the performance limits of a proposed heat pipe design. The performance limits of a sodium heat pipe with a screen-covered square grooved wick structure is compared to that of an equivalent heat pipe with an annular wick. In a horizontal orientation at an operating temperature of 650°C,the performance limits for the heat pipe with an annular wick configuration are 15% higher than for the screen-covered grooved wick. At operating temperatures below 777°C, the annular wick outperforms the screen-covered grooved wick, and at temperatures above 777°C, the screen-covered grooved wick outperforms the annular wick. However, the marginal performance gain at higher temperatures may not justify the use of heat pipes with a screen-covered grooved wick structure due to increased manufacturing costs.Keywords
Funding Information
- US Department of Energy (DE-AC07-05-ID14517)
This publication has 19 references indexed in Scilit:
- Conceptual design and analysis of a multipurpose micro nuclear reactor power sourceAnnals of Nuclear Energy, 2018
- Preliminary Assessment of Two Alternative Core Design Concepts for the Special Purpose ReactorPublished by Office of Scientific and Technical Information (OSTI) ,2017
- Characterisation of a grooved heat pipe with an anodised surfaceHeat and Mass Transfer, 2016
- GROOVED AND SELF-VENTING ARTERIAL HEAT PIPES FOR SPACE FISSION POWER SYSTEMSHeat Pipe Science and Technology, An International Journal, 2014
- Heat Pipe Design and TechnologyPublished by Taylor & Francis Ltd ,2011
- USES OF LIQUID-METAL AND WATER HEAT PIPES IN SPACE REACTOR POWER SYSTEMSFrontiers in Heat Pipes, 2011
- Forming method of axial micro grooves inside copper heat pipeTransactions of Nonferrous Metals Society of China, 2008
- Analysis of the heat transfer coefficient of grooved heat pipe evaporator wallsInternational Journal of Heat and Mass Transfer, 1992
- Review of liquid metal heat pipe work at Los AlamosAIP Conference Proceedings, 1991
- Wetting by sodium at high temperatures in pure vapour atmosphereJournal of Nuclear Materials, 1977