Publication Date:
2019-07-13
Description:
The solidification of phase change materials for the high temperature thermal energy storage system of an advanced solar thermal power system has been examined theoretically. In light of the particular thermophysical properties of candidate phase change high temperature salts, such as the eutectic mixture of NaF - MgF2, the heat transfer characteristics of one-dimensional inward solidification for a cylindrical geometry have been studied. The Biot number for the solidified salt is shown to be the critical design parameter for constant extraction heat flux. A fin-on-fin design concept of heat transfer surface augmentation is proposed in an effort to minimize the effects of the salt's low thermal conductivity and large volume change upon fusing.
Keywords:
ENERGY PRODUCTION AND CONVERSION
Type:
AIAA PAPER 81-1049
,
Thermophysics Conference; Jun 23, 1981 - Jun 25, 1981; Palo Alto, CA
Format:
text
Permalink
