Irsyad, Muhammad and Pasek, Ari Darmawan and Indartono, Yuli Setyo and Adriansyah, Willy (2018) An Investigation on Heat Transfer Characteristics of Salt Hydrate at Melting Temperature Range. International Journal of Air-Conditioning and Refrigeration. ISSN 2010-1333 (Submitted)

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Abstract

This experimental study examines the characteristics of heat transfer for material phase change slurry within melting temperature range. This study is extremely helpful in identifying the phenomena of heat transfer in air handling unit. The fluids used were CaCl2•9H2O and Na2HPO4•149H2O. These two fluids are a PCM type of hydrate salt. This research is focused on phase change temperature range that is 15oC to 5oC. Besides that it was also tested at a temperature of 20oC, as a comparison for one phase flow. The heat exchanger used is the double pipe type counter flow. Result of test showed that there was an increase in heat transfer rate when PCM fluid temperature decreased. The same thing also applied for total heat transfer coefficient. The increase seems significant with solid particle being formed in PCM at temperature of 15oC. The heat transfer process in PCM slurry is similar to nano fluid but the concentration of solid particles changes along the heat exchanger, so the Nusselt number equation involves a change in solid mass concentration.

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Fakultas Teknik (FT) > Prodi Teknik Mesin
Depositing User: DR MUHAMMAD IRSYAD
Date Deposited: 26 Jun 2018 02:49
Last Modified: 26 Jun 2018 02:49
URI: http://repository.lppm.unila.ac.id/id/eprint/6882

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