ABSTRACT

In this study, different wick properties were accomplished by applying pressure during the filling process in manufacturing; the amount of nickel powder filled into the mold was used to determine the amount of pressure applied. The filling volume ratio (Vr), calculated according to eq.(1), was used as index for amount of powder filled into the mold. Vr = 1 is the internal volume of the mold itself and acted as the basis for changes in Vr. In this study, Vr was varied from 1 to 1.4, but through experiments it was found that for Vr larger than

1 INTRODUCTION

FLHP is a two-phase high heat transfer capacity device that is applied to areas such as aerospace and electronic cooling. In 1985, Loop Heat Pipe (LHP) was proposed and patented by Maidanik[1]; for practical applications of LHP, FLHP was designed in 1999[2]. As shown in fig.1, FLHP includes an evaporator, a condenser, a compensation chamber, a vapor line, and a liquid line; the evaporator includes a wick that pumps the working fluid throughout the system.