EXPERIMENTAL INVESTIGATION OF VAPOR CHAMBER WITH DIFFERENT WORKING FLUIDS AT DIFFERENT CHARGE RATIOS

Abstract

KEYWORDSVapor chamber;Flat heat pipe;Electronic cooling;Heat pipeAbstract Vapor chamber is one of highly effective thermally spread techniques in electronic cool-ing. In the following a work is conducted to evaluate thermal performance of 2.0 mm high and50 mm diameter vapor chamber with water and methyl alcohol at different charge ratios. Also, asolution of water and Propylene Glycol at two concentration 50%, 15% were tested to study theeffect of using surfactant as enhancement agent for working fluid. Also total thermal resistanceof the chamber is divided into three types (junction resistance, internal resistance, and condenserresistance) to investigate and determine which type of thermal resistance has a major effect onchamber total thermal resistance. 2012 Ain Shams University. Production and hosting by Elsevier B.V.All rights reserved.