Fundamental heat transfer processes related to phase change thermal storage media
Abstract
The extent to which freezing can be enhanced by the attachment of fins to the external surface of a cooled vertical tube situated in liquid phase-change medium was investigated. Solutions involving both the phase-change medium and the heat transfer fluid used either to add heat to or extract heat from the medium were obtained. For freezing on a plane wall, it was possible to obtain a closed-form analytical solution, while for freezing about a coolant-carrying circular tube, a new numerical methodology was devised to obtain finite-difference solutions. For melting, quantitative design-quality heat transfer coefficients were determined experimentally for melting adjacent to a heat vertical tube.
- Publication:
-
Unknown
- Pub Date:
- January 1981
- Bibcode:
- 1981fhtp.rept.....S
- Keywords:
-
- Freezing;
- Heat Transfer;
- Melting;
- Thermodynamics;
- Coolants;
- Finite Difference Theory;
- Heat Transfer Coefficients;
- Pipes (Tubes);
- Energy Production and Conversion