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热管科学与技术

ISSN 打印: 2151-7975
ISSN 在线: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

热管科学与技术

DOI: 10.1615/HeatPipeScieTech.v1.i4.30
pages 329-357

THERMAL CONTROL OF LOOP HEAT PIPE WITH PRESSURE REGULATING VALVE

Alejandro Torres
IberEspacio, Calle Magallanes 3, 4th floor, 28015, Madrid, Spain
Donatas Mishkinis
IberEspacio, Calle Magallanes 3, 4th floor, 28015, Madrid, Spain
Andrei Kulakov
IberEspacio Tecnologia Aeroespacial, Magallanes 3, 4A, Madrid, 28010, Spain
Francisco Romera
IberEspacio. S. A.C/Magallanes, 3, 4th floor, 28015 Madrid, Spain
Carmen Gregori
IberEspacio Tecnologia Aeroespacial, Magallanes 3, 4A, Madrid, 28010, Spain
Tarik Kaya
Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Ontario, K1S 5B6, Canada

ABSTRACT

An innovative approach to regulate the operation temperature of a loop heat pipe (LHP) with a two-way valve is discussed. Comparison with a traditional three-way bypass valve is presented. It is found that a two-way valve design provides better thermal control than a traditional three-way design and has significant advantages. Some examples of two-way valve application are presented. Heat transfer limitation of an LHP with a pressure regulating valve is verified. Both modes of pressure regulating valve (PRV) application demonstrate practically the same maximum heat transfer rate. It is also found that the maximum heat transfer capacity of an LHP with a PRV is higher than an LHP without a valve. The start-up ability of an LHP with and without a PRV is also compared. It is observed that the PRV can facilitate the LHP start-up.