Evaporation Heat Transfer Coefficient in a Capillary Pumped Loop and Loop Heat Pipe for Different Working Fluids

Autor:	Pradip Dutta, Badarinarayana Krishnaswamy, Dinesh Kumar, Jasvanth S Vaidya, Abhijit A. Adoni, Amrit Ambirajan
Rok vydání:	2012
Předmět:	Fluid Flow and Transfer Processes Heat pipe Materials science Capillary action Mechanical Engineering Loop heat pipe Micro-loop heat pipe Thermodynamics Working fluid Heat transfer coefficient Condensed Matter Physics Condenser (heat transfer) Evaporator
Zdroj:	Heat Transfer Engineering. 33:765-774
ISSN:	1521-0537 0145-7632
DOI:	10.1080/01457632.2011.640890
Popis:	Capillary pumped loop (CPL) and loop heat pipe (LHP) are passive two-phase heat transport devices. They have been gaining importance as a part of the thermal control system of spacecraft. The evaporation heat transfer coefficient at the tooth-wick interface of an LHP or CPL has a significant impact on the evaporator temperature. It is also the main parameter in sizing of a CPL or LHP. Experimentally determined evaporation heat transfer coefficients from a three-port CPL with tubular axially grooved (TAG) evaporator and a TAG LHP with acetone, R-134A, and ammonia as working fluids are presented in this paper. The influences of working fluid, hydrodynamic blocks in the core, evaporator configuration (LHP or CPL), and adverse elevation (evaporator above condenser) on the heat transfer coefficient are presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c37a895d32783e9ea11486a25c36871d https://doi.org/10.1080/01457632.2011.640890 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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