Fundamental investigation of roll bond heat pipe as heat spreader plate for notebook computers

A roll bond heat pipe (RBHP) is very promising in the cooling of electronic equipment such as notebook computers. This study presents prediction data on maximum capillary limit obtained for the RBHP with 7.8 mm wide flow channel. Further, experimental study has been conducted to show the difference between the highest and lowest temperatures on the RBHP. These data determine the optimum working fluid charge volume and number of capillary loops for the RBHP.