The paper presents a new concept of an axially grooved heat pipe, which is composed of two or three pipe sections with different groove dimensions to increase wick permeability. The result is a wick desgin with graded porosity character and high heat transpoort capability. According to test results, which compare favourably with predicted data, heat transport of the new heat pipe is three times larger than in comparable conventional designs. This improvement is partly due to the graded porosity wick design and partly due to avoiding shear interaction between vapour and liquid. In addition to the constant conductance mode, the concept may be also effectively used for a liquid trap thermal diode design. Potential applications for the new design have been defined in Spacelab utilization programs and future high power communication and scientific spacecraft projects. (Stoehr)
Development of an axially grooved heat pipe with non-constant groove width
Entwicklung eines Waermeleitrohres mit axialen Kanaelen und unterschiedlicher Kanalweite
1978
9 Seiten, 11 Bilder, 7 Quellen
Conference paper
English
Analysis of axially grooved heat pipe condensers
AIAA | 1976
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