ADVANCED ANALYSIS OF AN AMMONIA LOOP HEAT PIPE FOR SPACE APPLICATIONS. PART II: NUMERICAL RESULTS

2013 ◽  
Vol 4 (1-2) ◽  
pp. 23-38
Author(s):  
Claudio Ferrandi ◽  
Stefano Zinna ◽  
Marco Molina ◽  
Marco Marengo
Keyword(s):  
Heat Pipe ◽  
Numerical Results ◽  
Loop Heat Pipe ◽  
Space Applications ◽  
Advanced Analysis

scholarly journals Heat-Transfer Characteristics of a Cryogenic Loop Heat Pipe for Space Applications

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1616
Author(s):  
Jaehwan Lee ◽  
Dongmin Kim ◽  
Jeongmin Mun ◽  
Seokho Kim
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Infrared Detectors ◽  
Working Fluid ◽  
Loop Heat Pipe ◽  
Zero Gravity ◽  
Heat Transfer Characteristics ◽  
Space Applications ◽  
Transfer Characteristics ◽  
Start Up

Infrared detectors on satellites and spacecraft require cooling to increase their measurement sensitivity. To efficiently cool infrared detectors in a zero gravity environment and in limited spaces, a cryogenic loop heat pipe (CLHP) can be used to transfer heat over a certain distance by the capillary forces generated from porous wicks without a mechanical power source. The CLHP presented in this study transfers the heat load to a condenser 0.5 m away from an evaporator at temperatures below −150 °C. The CLHP with two evaporators includes a subloop for initial start-up, and uses a pressure reduction reservoir (PRR) for the supercritical start-up from room to cryogenic temperature. Nitrogen is used as the working fluid to verify the thermal behavior of the CLHP, and the heat-transfer capacity according to the nitrogen charging pressure of the PRR is investigated. To simulate a cryogenic environment, the CLHP is installed inside a space environment simulator, including a single-stage GM (Gifford McMahon) cryocooler to cool the condenser. The CLHP is horizontally installed to simulate zero gravity. The heat-transfer characteristics are experimentally evaluated through the loop circulation of the CLHP.

Thermal Performance Evaluation of a Small Loop Heat Pipe for Space Applications

2003 ◽  
Author(s):  
Michael T. Pauken ◽  
Gaj Birur ◽  
Michael Nikitkin ◽  
Faisal Al-Khabbaz
Keyword(s):  
Performance Evaluation ◽  
Heat Pipe ◽  
Thermal Performance ◽  
Loop Heat Pipe ◽  
Space Applications ◽  
Small Loop

EXPERIMENTAL COMPARISON OF LOOP HEAT PIPE PERFORMANCE WITH VARIOUS EVAPORATOR DESIGNS

2014 ◽  
Vol 5 (1-4) ◽  
pp. 287-294
Author(s):  
S. Ouenzerfi ◽  
T. Barreteau ◽  
C. Petit ◽  
Valerie Sartre ◽  
Jocelyn Bonjour ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Experimental Comparison ◽  
Loop Heat Pipe

INVESTIGATION OF THE THERMAL PERFORMANCE OF MINIATURE LOOP HEAT PIPE WITH WATER-COPPER NANOFLUID

2013 ◽  
Vol 4 (3) ◽  
pp. 181-196
Author(s):  
Xiaowu Wang ◽  
Zhenping Wan ◽  
Yanxiao Xu ◽  
Yong Tang
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Loop Heat Pipe
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