Coaxial heat pipe for cooling of a laser’s reflector

A. N. Gershuni; A. P. Nishchik

doi:10.15222/TKEA2014.2-3.37

A. N. Gershuni NTUU «Kiev politechnic university», Kyiv, Ukraine
A. P. Nishchik NTUU «Kiev politechnic university», Kyiv, Ukraine

DOI: https://doi.org/10.15222/TKEA2014.2-3.37

Keywords: reflector laser, cooling system, coaxial heat pipe

Abstract

The paper presents the development and research results for a coaxial heat pipe designed for cooling of a reflector of a solid-state laser. A coaxial cylindrical heat pipe, designed to cool the laser reflector, provides that the temperature of the heat-removing surface does not exceed 120°C at any orientation in the gravitational field, if the heat is removed by forced convection of air with the temperature of 60°C in a pulsed mode of heat flow supply of 300 W. Thermal resistance of the developed heat pipe is 0,03 K/W, the specific thermal resistance — 1,1^.10^–3 m^2.K/W. The developed cooling system based on the evaporation-condensation principle, allows ensuring temperature uniformity of the cooling surface at low thermal resistance.

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