Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit

Abstract One of the most suitable materials to be used in latent heat thermal energy storage system (LHTES) are Phase change materials, but a problem of slow melting and solidification processes made many researchers focusing on how to improve their thermal properties. This experimental work con...

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Autores principales:	Rafa A.H Albaldawi, Aseel K. Shyaa, Ban M.H. Hammendy
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2015
Materias:	Thermal energy storage systems, Latent heat storage, Phase change materials, Heat transfer enhancement. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/78d890d36bd24a3c94eb2714b54729ad
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spelling	oai:doaj.org-article:78d890d36bd24a3c94eb2714b54729ad2021-12-02T04:42:06ZExperimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit1818-11712312-0789https://doaj.org/article/78d890d36bd24a3c94eb2714b54729ad2015-12-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/265https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 Abstract One of the most suitable materials to be used in latent heat thermal energy storage system (LHTES) are Phase change materials, but a problem of slow melting and solidification processes made many researchers focusing on how to improve their thermal properties. This experimental work concerned with the enhancing of thermal conductivity of phase change material. The enhancing method was by the addition of copper Lessing rings in phase change material (paraffin wax). The effect of diameter for the used rings was studied by using two different diameters (0.5 cm and 1cm). Also, three volumetric percentages of rings addition (3%, 6% and 10%) were tested for each diameter. The discharging process was done with four velocities for each case. The obtained results indicated that the maximum volumetric percentage gave a diminished time for melting and maximized the heat transfer in both PCM and air sides as compare with the case of no rings, but the effect of these rings had lower effect on the solidification time. In case of 1 cm rings diameter minimum time for melting was obtained for both 3% and 6% volumetric percentages as compared with the same percentages in case of 0.5 cm diameter rings, while the latter with 10% volumetric percentage overcomes the 1 cm diameter rings for the same previous percentage. Also it can be seen that the minimum velocity (v=1m/s) gave the utmost outlet temperature and with the maximum one (v=3m/s), the minimum solidification time achieved. Keyword: Thermal energy storage systems, Latent heat storage, Phase change materials, Heat transfer enhancement. Rafa A.H AlbaldawiAseel K. ShyaaBan M.H. HammendyAl-Khwarizmi College of Engineering – University of BaghdadarticleThermal energy storage systems, Latent heat storage, Phase change materials, Heat transfer enhancement.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 11, Iss 4 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Thermal energy storage systems, Latent heat storage, Phase change materials, Heat transfer enhancement. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Thermal energy storage systems, Latent heat storage, Phase change materials, Heat transfer enhancement. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Rafa A.H Albaldawi Aseel K. Shyaa Ban M.H. Hammendy Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit
description	Abstract One of the most suitable materials to be used in latent heat thermal energy storage system (LHTES) are Phase change materials, but a problem of slow melting and solidification processes made many researchers focusing on how to improve their thermal properties. This experimental work concerned with the enhancing of thermal conductivity of phase change material. The enhancing method was by the addition of copper Lessing rings in phase change material (paraffin wax). The effect of diameter for the used rings was studied by using two different diameters (0.5 cm and 1cm). Also, three volumetric percentages of rings addition (3%, 6% and 10%) were tested for each diameter. The discharging process was done with four velocities for each case. The obtained results indicated that the maximum volumetric percentage gave a diminished time for melting and maximized the heat transfer in both PCM and air sides as compare with the case of no rings, but the effect of these rings had lower effect on the solidification time. In case of 1 cm rings diameter minimum time for melting was obtained for both 3% and 6% volumetric percentages as compared with the same percentages in case of 0.5 cm diameter rings, while the latter with 10% volumetric percentage overcomes the 1 cm diameter rings for the same previous percentage. Also it can be seen that the minimum velocity (v=1m/s) gave the utmost outlet temperature and with the maximum one (v=3m/s), the minimum solidification time achieved. Keyword: Thermal energy storage systems, Latent heat storage, Phase change materials, Heat transfer enhancement.
format	article
author	Rafa A.H Albaldawi Aseel K. Shyaa Ban M.H. Hammendy
author_facet	Rafa A.H Albaldawi Aseel K. Shyaa Ban M.H. Hammendy
author_sort	Rafa A.H Albaldawi
title	Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit
title_short	Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit
title_full	Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit
title_fullStr	Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit
title_full_unstemmed	Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit
title_sort	experimental study on the effect of insertion of copper lessing rings in phase change material (pcm) on the performance of thermal energy storage unit
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2015
url	https://doaj.org/article/78d890d36bd24a3c94eb2714b54729ad
work_keys_str_mv	AT rafaahalbaldawi experimentalstudyontheeffectofinsertionofcopperlessingringsinphasechangematerialpcmontheperformanceofthermalenergystorageunit AT aseelkshyaa experimentalstudyontheeffectofinsertionofcopperlessingringsinphasechangematerialpcmontheperformanceofthermalenergystorageunit AT banmhhammendy experimentalstudyontheeffectofinsertionofcopperlessingringsinphasechangematerialpcmontheperformanceofthermalenergystorageunit
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Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit

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