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INNOVATIVE HEAT PIPES AND NANOTECHNOLOGIES

DOI: 10.1615/ICHMT.2014.IntSympConvHeatMassTransf.710
pages 953-963

Leonard L. Vasiliev
Porous Media Laboratory Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus 15, Str. P.Brovka, 220072 Minsk, Belarus

Leonid P. Grakovich
Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, P. Brovka 15, 220072, Minsk, Belarus

Mikhail I. Rabetskii
Laboratory of Porous Media, A.V.Luikov Heat and Mass Transfer Institute, National Academy of Sciences, P.Brovka 15, 220072, Minsk, Belarus

Leonid L. Vasiliev, Jr.
Byelorussian Academy of Sciences; and Luikov Heat & Mass Transfer Institute, Porous Media Laboratory, P. Brovka Str. 15, 220072 Minsk, Belarus

Abstract

The flat horizontal polymer loop thermosyphon with flexible transport lines is suggested and tested. The thermosyphon envelope consists of polyamide composite with carbon nanofilaments and nanoparticles to increase its effective thermal conductivity up to 11 W/m °C. Rectangular capillary grooves inside the evaporator and condenser are used as a mean of heat transfer enhancement. The working fluid is R 600. It was found that in a flat grooved evaporator the thermal resistance Rev of the polymer thermosyphon is of the same order of magnitude as in a classical aluminum smoothly grooved heat pipe evaporator. The thermosyphon evaporator and condenser have a long service life and good wettability and are similar in their design.

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