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Title:
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Experimental investigation of the effect of dynamic melting in a cylindrical shell-and-tube heat exchanger using water as PCM
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Author:
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Gasia, Jaume; Tay, N. H. Steven; Belusko, Martin; Cabeza, Luisa F.; Bruno, Frank
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Notes:
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In the present paper, an experimental study is carried out to evaluate the effect of the dynamic melting concept in a cylindrical shell-and-tube heat exchanger using water as the phase change material (PCM) and a potassium formate/water solution as the heat transfer fluid (HTF). The dynamic melting concept is a new heat transfer enhancement technique which consists of recirculating the liquid PCM during the melting process with a pump and thus increasing the overall heat transfer coefficient as a result of the dominance of the forced convection. The HTF flow rate was kept constant at 1 l/min and four different PCM flow rates of 0, 0.5, 1 and 2 l/min were tested. Results from the experimental analysis showed enhancements up to 65.3% on the melting period, up to 56.4% on the effectiveness, and 66% on the heat transfer rates when the PCM flow rate was twice the HTF flow rate. From these experiments, it can be concluded that dynamic melting is an effective technique for enhancing heat transfer during melting of PCM.
The authors acknowledge the South Australian Department of State Development who have funded this research through the Premier’s Research Industry Fund - International Research Grant Program (IRGP 33). This project has received funding from the European Commission Seventh Framework Programme (FP/2007-2013) under Grant agreement N° PIRSES-GA-2013-610692 (INNOSTORAGE) and from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 657466 (INPATH-TES). Jaume Gasia would like to thank the Departament d’Universitats, Recerca i Societat de la Informació de la Generalitat de Catalunya for his research fellowship (2016FI_B 00047). The work is partially funded by the Spanish Government (ENE2015-64117-C5-1-R). The authors at the University of Lleida would like to thank the Catalan Government for the quality accreditation given to their research group GREA (2014 SGR 123). |
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Subject(s):
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-Thermal energy storage
-Phase change material
-Dynamic melting
-Heat transfer enhancement
-Effectiveness |
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Rights:
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cc-by-nc-nd, (c) Elsevier, 2017
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Document type:
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article
acceptedVersion |
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Published by:
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Elsevier
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Share:
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