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Development of a Cryogenic Loop Heat Pipe (CLHP) for Passive Optical Bench Cooling Applications
Technical Paper
2002-01-2507
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Like a Loop Heat Pipe (LHP), a Cryogenic Loop Heat Pipe (CLHP) is a passive two-phase heat transport system that utilizes the capillary pressure developed in a fine pore evaporator wick to circulate the system's working fluid. To demonstrate startup from a supercritical temperature and an operation below ambient temperature for passive bench cooling applications, a CLHP was developed and tested in a thermal vacuum chamber. The system requires startup from a maximum outgassing temperature of 335K over an operating temperature range of 215 to 218K, and an orbital average heat transport capability of 39W. Ethane was selected as the working fluid because it has heat transport properties that are suitable for the operating temperature of 218K. This paper provides a description of the CLHP concept, the development of the design including proof of concept development and testing of a CLHP designed to provide passive cooling of optical instruments.
Authors
Citation
Yun, J., Kroliczek, E., and Crawford, L., "Development of a Cryogenic Loop Heat Pipe (CLHP) for Passive Optical Bench Cooling Applications," SAE Technical Paper 2002-01-2507, 2002, https://doi.org/10.4271/2002-01-2507.Also In
References
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