thermal performance of different working fluids in a dual diameter circular heat pipe

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ID: 130529
2013
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Abstract
In this paper, heat transfer performance of a 40 cm-length circular heat pipe with screen mesh wick is experimentally investigated. This heat pipe is made of copper with two diameters; larger in the evaporator and smaller in the adiabatic and condenser. Three different liquids including water, methanol, and ethanol are separately filled within the heat pipe. Low heat fluxes are applied (up to 2500 W/m2) in the evaporator and constant temperature water bath is used at three levels including 15, 25, and 35 °C in the condenser. Results demonstrate that higher heat transfer coefficients are obtained for water and ethanol in comparison with methanol. Furthermore, increasing heat flux increases the evaporator heat transfer coefficient. For the case of methanol, some degradation in heat transfer coefficient is occurred at high heat fluxes which can be due to the surface dryout effect. Increasing the inclination angle decreases the heat pipe thermal resistance.
Reference Key
peyghambarzadeh2013ainthermal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;S.M. Peyghambarzadeh;S. Shahpouri;N. Aslanzadeh;M. Rahimnejad
Journal der pharmacia lettre
Year 2013
DOI
10.1016/j.asej.2013.03.001
URL
http://www.sciencedirect.com/science/article/pii/S2090447913000361
Keywords
thermal resistance ethanol heat transfer coefficient methanol civil engineering (general)

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