| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a latent heat storage material improved in effective thermal conductivity, so as to sharply increase a dissolution rate and a coagulation rate of the heat storage material, capable of preventing separation/leakage of the material in a cycle of heat storage and heat release, and comprising a mixture of a phase change material and a highly thermally-conductive material, and to provide a method for producing the same. <P>SOLUTION: This heat storage material comprises the phase change material and the expanded graphite, and further comprises voids in a volume percentage of 1-40%. The method for producing the heat storage material comprises using a casing having a lattice-shaped form, a pipe-shaped form, etc. A mixture of unpulverized expanded graphite having a bulk density of 0.002-0.02 g/cm<SP>3</SP>and an expanded graphite pulverized powder formed by pulverizing an expanded graphite sheet and having a bulk density of 0.02-0.20 g/cm<SP>3</SP>is preferably used as the expanded graphite. <P>COPYRIGHT: (C)2007,JPO&INPIT |
