Abstract
Development of a hybrid cooling system with the combination of heat pipes and phase change material for the lithium-ion battery in electric vehicles is being studied in our laboratory. It is also necessary to investigate the performance of the heat pipe for the development of this hybrid cooling technology. This study attempted to observe the motion of the vapor phase in the heat pipe. Furthermore, this observation attempted to measure the velocity of the vapor phase by using PIV (Particle Image Velocimetry) technique. The final aim of this study is to observe a dryout state of the heat pipe.
