2009•Journal of the University of Shanghai for Science and TechnologyRequires access
Experimental study on pulsating heat pipe with different working fulids
Jichao Hu
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Abstract
In order to understand the heat transfer mechanism of the looped pulsating heat pipe with different working fluids,wind cooled a vertical looped pulsating heat pipe was investigated on an experimental setup with three working fluids:R123,ethanol and water.Different thermal resistances and their varying trends under different heat loads and fill ratios of the pulsating heat pipe using different working fluids were measured.It is found that the startup characteristics and thermal resistances are related to the properties of the working fluids including the saturation temperature,specific heat,latent heat of vaporization and the variation of pressure with temperature for saturated vapor.Different property has different effect on different working conditions,which determines the easiness to start pulsation and reveals the thermal resistance variation tendency with the change of heat load.