Theoretical and experimental study of a loop heat pipe at positive elevation

Po Ya Abel Chuang; John M. Cimbala; Jack S. Brenizer; C. Thomas Conroy

doi:10.1115/IMECE2004-60925

Theoretical and experimental study of a loop heat pipe at positive elevation

Po Ya Abel Chuang, John M. Cimbala, Jack S. Brenizer, C. Thomas Conroy

Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

A loop heat pipe (LHP), which is a two-phase heat transfer device, was studied experimentally and theoretically. The steady-state operating characteristics of a LHP when it is operated at adverse (the condenser is below the evaporator) and zero elevations (the evaporator and the condenser are at the same level) had been studied intensively in the past. However, study of a LHP when it is operated at positive elevation (the condenser is above the evaporator) is still lacking. This paper presents detailed theoretical analysis of the steady-state behavior of a LHP operated at positive elevation. The present analysis agrees with experimental results, and is confirmed by flow visualization images. Testing was performed for a wide range of heat loads (20 W-600 W) at three positive elevations: 25.4mm, 76.2mm, and 127mm. Flow visualization images were taken by neutron radiography when the LHP was operated at 102mm positive elevation.

Original language	English (US)
Article number	IMECE2004-60925
Pages (from-to)	67-74
Number of pages	8
Journal	American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume	375
Issue number	2
DOIs	https://doi.org/10.1115/IMECE2004-60925
State	Published - Jan 1 2004
Event	2004 ASME International Mechanical Engineering Congress and Exposition, IMECE - Anaheim, CA, United States Duration: Nov 13 2004 → Nov 19 2004

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Fluid Flow and Transfer Processes

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title = "Theoretical and experimental study of a loop heat pipe at positive elevation",

abstract = "A loop heat pipe (LHP), which is a two-phase heat transfer device, was studied experimentally and theoretically. The steady-state operating characteristics of a LHP when it is operated at adverse (the condenser is below the evaporator) and zero elevations (the evaporator and the condenser are at the same level) had been studied intensively in the past. However, study of a LHP when it is operated at positive elevation (the condenser is above the evaporator) is still lacking. This paper presents detailed theoretical analysis of the steady-state behavior of a LHP operated at positive elevation. The present analysis agrees with experimental results, and is confirmed by flow visualization images. Testing was performed for a wide range of heat loads (20 W-600 W) at three positive elevations: 25.4mm, 76.2mm, and 127mm. Flow visualization images were taken by neutron radiography when the LHP was operated at 102mm positive elevation.",

author = "Chuang, {Po Ya Abel} and Cimbala, {John M.} and Brenizer, {Jack S.} and Conroy, {C. Thomas}",

year = "2004",

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doi = "10.1115/IMECE2004-60925",

language = "English (US)",

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journal = "American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD",

issn = "0272-5673",

publisher = "American Society of Mechanical Engineers(ASME)",

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note = "2004 ASME International Mechanical Engineering Congress and Exposition, IMECE ; Conference date: 13-11-2004 Through 19-11-2004",

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Theoretical and experimental study of a loop heat pipe at positive elevation. / Chuang, Po Ya Abel; Cimbala, John M.; Brenizer, Jack S.; Conroy, C. Thomas.

In: American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD, Vol. 375, No. 2, IMECE2004-60925, 01.01.2004, p. 67-74.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

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