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Transport Phenomena in Thermal Engineering. Volume 2

ISBN:
1-56700-015-0 (Print)

THE DEVELOPMENT OF TITANIUM-AMMONIA VARIABLE CONDUCTANCE HEAT PIPE

Masaru Ishizuka
Energy and Mechanical Research Laboratories, Research and Development Center, Toshiba Corporation, 1, Toshiba Cho, Saiwai Ku, Kawasaki, 210, Japan

Tomiya Sasaki
Toshiba Research and Development Center, 1 Komukai Toshiba cho, Saiwaiku, Kawasaki 210, JAPAN

Yoshiro Miyazaki
Toshiba Research and Development Center, 1 Komukai Toshiba cho, Saiwaiku, Kawasaki 210, JAPAN

Abstract

This paper describes titanium heat pipe design, manufacture and tests. The heat pipes developed are a titanium-ammonia fixed conductance heat pipe(FCHP) with axial grooves and a titanium-ammonia-gas loaded variable conductance heat pipe with a heated reservoir (VCHP). Nitrogen was charged to VCHP as a non-condensible gas. The manufacturing processes in this heat pipe development program were studied successfully, and it has been clarified that titanium is very desirable as heat pipe material for use in space.