SOLUTIONS FOR HEAT OR COLD DISCHARGE FROM ENCAPSULATED PHASE-CHANGE MATERIALS
authors Vitorino, N; Abrantes, JCC; Frade, JR
nationality International
journal NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS
keywords THERMAL-ENERGY STORAGE; SPHERICAL CAPSULE; SYSTEM; PCM
abstract Stable, convergent, and fast computing codes have been developed to describe heat or cold discharge from encapsulated phase-change materials (PCMs). Numerical algorithms are based on previous transformations of relevant variables to yield immobilization of the moving boundary and also a flat-like condition to enhance convergence of the computing codes. These algorithms are used to analyze heat transfer limitations imposed by the low conductivity of the solidifying PCM layer and the mixed control related to the thermal resistance of the encapsulated wall and/or heat transfer limitations to the external fluid. The stability and the convergence of the codes are analyzed by varying the mesh size, and the relative time step, and are also compared with a space grid method solution. Quasi-steady-state solutions are also proposed and their applicability examined.
publisher TAYLOR & FRANCIS INC
issn 1040-7790
year published 2013
volume 64
issue 6
beginning page 421
ending page 435
digital object identifier (doi) 10.1080/10407790.2013.831678
web of science category Thermodynamics; Mechanics
subject category Thermodynamics; Mechanics
unique article identifier WOS:000325602300001
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  impact metrics
journal analysis (jcr 2017):
journal impact factor 1.775
5 year journal impact factor 1.649
category normalized journal impact factor percentile 53.576
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