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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 1.199 5-летний Импакт фактор: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 51, 2020 Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018024568
pages 545-564

THERMAL PERFORMANCE OF MULTITUBE LATENT HEAT STORAGE USING A METAL MATRIX FOR SOLAR APPLICATIONS: NUMERICAL STUDY

Shah Rauf
Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
Sandip Kumar Saha
Department of Mechanical Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai – 400076. Maharashtra, India

Краткое описание

This study presents an analysis of multitube shell and tube latent heat thermal energy storage system (LHTES) for medium-temperature solar applications (~ 200°C) to evaluate its thermal performance during discharging operation. As the present commercially available organic PCM possesses very low thermal conductivity, a metal matrix, acting as a thermal conductivity enhancer, is embedded in the annular space saturated with PCM. A numerical model, consisting of momentum and two-temperature nonequilibrium energy equations coupled with enthalpy technique for phase change of PCM, is developed and validated with experimental results. Further, parametric studies are conducted by varying the porosity and pore diameter of the metal matrix for estimating entropy generation, second law efficiency, and thermal performance index (TPI). The study finds that the second law efficiency increases with the decrease in the porosity and pore diameter. However, the TPI decreases with increase in porosity, while the pore diameter has no significant effect on it.


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