Heat transfer in a latent heat-storage system

Ho Suk Choi, Byuhg Chul Shin and Sang Done Kim

Energy, 1989, vol. 14, issue 9, 513-524

Abstract: The heat-recovery rate has been determined in a latent-heat storage unit using Na2HPO4 · 12H2O as a heat-storage medium. The effects of the liquid flow rate and inlet temperature of the heat-transfer fluid on the heat-recovery rate have been determined. The heat-recovery rate decreases sharply at the beginning of the heat-recovery stage. The measured thermal resistances during heat recovery are found to be smaller than the calculated values since the crystals of Na2HPO4 · 12H2O grow in dendritic shapes which act as fins for heat transfer. The thickness of the crystallized heat-storage material has been correlated in terms of Fourier, Stefan, and Reynolds numbers.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:14:y:1989:i:9:p:513-524

DOI: 10.1016/0360-5442(89)90022-4

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