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Performance Enhancement of Solar Latent Heat Thermal Storage System with Particle Dispersion — an Exergy Approach
Author(s) -
Jegadheeswaran Selvaraj,
Pohekar Sanjay D.,
Kousksou Tarik
Publication year - 2011
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201000584
Subject(s) - materials science , latent heat , thermal energy storage , thermal conductivity , exergy , phase change material , thermodynamics , exergy efficiency , heat transfer , work (physics) , dispersion (optics) , enthalpy , thermal , mechanics , composite material , physics , optics
Phase change material (PCM) employed latent heat thermal storage (LHTS) system has been showing good potential over the years for energy management, particularly in solar energy systems. However, enhancement in thermal conductivity of PCMs is emphasized as PCMs are known for their poor thermal conductivity. In this work, the thermal performance of a shell and tube LHTS module containing PCM‐metal particles composite is investigated while charging and is compared with that of pure PCM system. The effect of particle dispersion on latent heat capacity of pure PCM is also analyzed. Enthalpy based governing equations are solved numerically adopting FLUENT code. Exergy based performance evaluation is taken as a main aspect. The numerical results are presented for various operating conditions of heat transfer fluid (HTF) and indicate considerable performance improvement of the system when particles are dispersed.