Phase-change heat transfer during cyclic heating and cooling with internal radiation and temperature-dependent properties

Bedru Yimer

Energy, 1998, vol. 23, issue 11, 929-935

Abstract: This paper contains the results of a numerical investigation of the effects of internal radiation on heat transfer during cyclic heating and cooling of a phase-change energy–storage system. The effects of internal radiation, temperature distribution and energy stored and extracted were investigated. An absorbing, emitting, and isotropically scattering, finite, and semi-transparent, gray, phase-change medium bounded between two concentric cylinders was studied. The phase-change medium was a fluoride salt with LiF (41.27%), MgF2 (48.76%) and KF (8.95% by weight). Radiative heat transfer affects the dynamics of phase changes significantly for low values of the conduction–radiation interaction parameter.

Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:23:y:1998:i:11:p:929-935

DOI: 10.1016/S0360-5442(98)00048-6

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