Corrugated heat pipe

Details Corrugated heat pipe Corrugated heat pipe

1988-03-07

1989-06-06

Davis, Jr., Albert W.

Heat exchange

Flexible envelope or cover type

165 45, 16510421, 16510426, 165906, 606412, 62260, F28D 1502

Patent

active

048362751

ABSTRACT:
A corrugated heat pipe sealed at both ends is disclosed, having a longitudinally corrugated peripheral wall and containing operating liquid therein. The corrugated heat pipe comprises inside a rope-like tension member extending therethrough in its longitudinal direction and secured at both ends. The rope-like tension member has the effect of preventing the corrugated heat pipe from elongation due to the weight thereof when the pipe is inserted in the ground, thus eliminating the possibility of local flattening of the corrugated outer periphery or of breakage of the pipe. Further, even when the coefficient of thermal expansion of the rope-like tension member differs from that of the corrugated heat pipe, since the corrugated heat pipe has its outer periphery corrugated in a wavy form in the longitudinal direction, it can sufficiently absorb the thermal expansion of the rope-like tension member. Thus, the corrugated heat pipe will not be broken, even when the coefficient of thermal expansion of the corrugated heat pipe differes from that of the rope-like tension member.

REFERENCES:
patent: 4402358 (1983-09-01), Wolf
"Development of Ultra Large Scale Gravity-Assisted Heat Pipe", (printed in Fujikura Ltd. Technical Review, vol. 73, published in Aug. 1987, written by Shiraishi, Mohtai, Mochizuki and Mashiko).

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