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Heat Pipe Science and Technology, An International Journal

ISSN Print: 2151-7975
ISSN Online: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.v2.i1-4.90
pages 79-87

INVESTIGATION OF THE GUIDE INSERTIONS INFLUENCE ON THE CONDENSATION OF WATER IN A NARROW GAP CONDENSER OF A LOOP HEAT PIPE

E. Bartuli
Institute of Thermal Physics, Ural Branch of the Russian Academy of Sciences, Amundsena St., 107a, Yekaterinburg, 620016, Russia
M. Chernysheva
Institute of Thermal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620016, Russia
S. Vershinin
Institute of Thermal Physics, Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., Ekaterinburg 620016, Russia
Yury F. Maydanik
Institute of Thermal Physics, Ural Branch of the Russian Academy of Sciences, 107a Amundsen Str., Yekaterinburg, 620016, Russia

ABSTRACT

This paper presents the results of an investigation of heat transfer and hydrodynamics during the condensation of water vapor in a narrow gap condenser of a loop heat pipe. The length of the condenser was 80 mm. The cross section measured 40 × 1.1 mm. Instrumental investigations and visual observations of the condensation process in the condenser with and without longitudinal guide insertions were carried out. The investigations were conducted at a condenser cooling temperature from 60 to 95° C. During all operating parameters a stratified two-phase flow and film condensation were observed. The temperature field in the condenser and the heat-transfer coefficients were measured. The heat-transfer coefficients in the condenser without the insertions were in the range from 21 to 46 kW/(K·m2), with the insertions from 42 to 88 kW/(K·m2).


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