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Charging Performance Evaluation of Finned Conical Thermal Storage System Encapsulated with Nano-enhanced Phase Change Material by Rupinder Pal Singh; Haoxin Xu; S.C. Kaushik; Dibakar Rakshit; Alessandro Romagnoli is a Engineering article available to read on EtoBox.

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This study introduces a novel latent heat storage system using a combination of active (fins and nanoparticles) and passive (conical design) heat transfer enhancement techniques for the solar absorption chilling system. First part of the work proposes a selection criterion using Multi-attribute decision making (MADM) combined with Multi objectives decision making (MODM) tools to rank and select the different nanoparticles. The methodology suggests Graphene as the best candidate amongst the widely used metal (Cu, Al, Ni, Ag) and metal oxide (CuO, Al2O3, TiO2, SiO2) nanoparticles. Subsequently, the charging performance of the medium temperature eutectic salt (LiNO3-KCl; 50:50) dispersed with graphene nanoplates is studied in a conical shaped shell and tube storage system with & without fins. The numerical investigations are performed using the actual plant data of double effect solar absorption system. Based on the plant operating conditions, the Stefan and Grashoff numbers are obtained as 0.35 & 4.2 × 105 respectively, showing the laminar flow of molten PCM. The thermal performance of the storage system coupled with heat transfer and fluid flow is studied for melt fraction, temperat

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Author

Rupinder Pal Singh; Haoxin Xu; S.C. Kaushik; Dibakar Rakshit; Alessandro Romagnoli

Publisher

Elsevier BV

Published

2019

Language

EN

Field

Engineering (Physical Sciences)