VOID FORMATION IN UNIDIRECTIONAL FREEZING FROM ABOVE
- 1 January 1993
- journal article
- research article
- Published by Taylor & Francis in Experimental Heat Transfer
- Vol. 6 (1) , 1-16
- https://doi.org/10.1080/08916159208945366
Abstract
Experiments were conducted to observe the solidification sequence and final shrinkage void distribution for liquids solidified from above in a rigid, constant-volume container. The overall void distribution appears to depend strongly on the initial liquid temperature and to a lesser extent on the cooling rate. A thermodynamic model has been developed that follows the liquid, vapor, and solid phases throughout the cooling process. Several void-formation phenomena are then examined qualitatively with reference to the thermodynamic model. We feel that these results will lead eventually to better void management in phase-change materials for storing thermal energy.Keywords
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