Abstract
In the present investigation a two phase thermosyphon has been fabricated to investigate the effect of operating parameters on the heat transport capability. The system consists of evaporator section, adiabatic section and condenser section with thermocouples located on the wall of thermosyphon. Electric heater was fixed on the bottom of the evaporator section and water jacket for cooling the condenser was placed on the top of the condenser section of the thermosyphon. The experiments were conducted with three different thermosyphons with inner diameters of 6.7, 9.5 and 12 mm. The variation of heat transport capability of the thermosyphon was studied for the input heat transfer rate ranging from 0 to 1200 W for various filling ratios and with operating temperature from 30 to 70°C. Water, methanol, ethanol and acetone were used as working fluids. The maximum heat transport capability was found to be high for water compared to other fluids such as ethanol, methanol and acetone at the operating temperatures higher than 40°C.
Highlights
To liquid, giving up its latent heat of condensation
This study presents the heat transfer capability of the two phase closed thermosyphon charged with water as well as other three working fluids such as ethanol, methanol and acetone with three different diameters at various filling ratios and operating temperatures
The two phase closed thermosyphon with internal diameters of 6.7, 9.5 and 12 mm are fabricated to investigate the influence of filling ratio, operating temperature, working fluids on the heat transport capability of thermosyphon
Summary
To liquid, giving up its latent heat of condensation. A two phase closed thermosyphon is a heat pipe which under the effect of gravity to the evaporator section. Many researchers (Baojin et al, 2009; Benkheira et al, condenser to evaporator in the heat transport process due 2007; EI-Genk and Huang, 1993; Huminic et al, 2011; to gravity, the evaporator must be positioned at Groll et al, 1981) have conducted experiments on the the lower part than the condenser in the gravitation field thermal performance of two phase closed thermosyphon (Park et al, 2002). Due to its simple structure, stable using various working fluid and different pipe diameters. The evaporator is partially filled with different filling ratios, aspect ratios and heat input
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