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Development and Investigation of a Two-Phase Loop Thermosiphon with a Flat Evaporator at Different Slope Angles

  • Heat and Mass Transfer and Physical Gasdynamics
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High Temperature Aims and scope


We present the results of the development and experimental studies of a two-phase loop thermosiphon with a flat evaporator and ethanol as the working fluid. We investigate the thermal characteristics of the device within the temperature range of 20–80°C under the heat loads of 10–120 W, a filling ratio of 40%, and slope angles within the range of 0°–90°. The device is functional at all of the studied slope angles. The maximum heat load of 120 W was reached at the slope angle of 90°. Here, the average temperature of the evaporator surface was within 70°C and the maximum thermal resistance was equal to 0.41°C/W.

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Correspondence to Yu. F. Maydanik.

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Original Russian Text © V.I. Dmitrin, Yu.F. Maydanik, 2018, published in Teplofizika Vysokikh Temperatur, 2018, Vol. 56, No. 1, pp. 86–91.

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Dmitrin, V.I., Maydanik, Y.F. Development and Investigation of a Two-Phase Loop Thermosiphon with a Flat Evaporator at Different Slope Angles. High Temp 56, 92–97 (2018).

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