Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement

Orthogonal fins made of a vertical and a horizontal fin shorten total charging time and enhance average charging rate of lowly conductive phase change materials (PCMs) such as paraffin wax. An optimum dimension of orthogonal fins exists during charging of paraffin wax under top heating. The optimum...

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Auteurs principaux:	Benli Peng, Wenlong Sheng, Meizhuting Qiu, Yong Zhou, Zhengyu He, Hong Wang, Fengmin Su
Format:	article
Langue:	EN
Publié:	AIDIC Servizi S.r.l. 2021
Sujets:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Accès en ligne:	https://doaj.org/article/48e6517f4f9b4760a2fd15197a85cd3f
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spelling	oai:doaj.org-article:48e6517f4f9b4760a2fd15197a85cd3f2021-11-15T21:47:48ZInfluence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement10.3303/CET21881222283-9216https://doaj.org/article/48e6517f4f9b4760a2fd15197a85cd3f2021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11915https://doaj.org/toc/2283-9216Orthogonal fins made of a vertical and a horizontal fin shorten total charging time and enhance average charging rate of lowly conductive phase change materials (PCMs) such as paraffin wax. An optimum dimension of orthogonal fins exists during charging of paraffin wax under top heating. The optimum dimension is represented by the optimum relative distance. The relative distance d/lv is defined as the ratio of the distance between horizontal fin and bottom wall of enclosure to length of vertical fin. However, the physicochemical properties of PCMs are variant in practical. Their influences on this optimum relative distance of orthogonal fins are not conducted. In current investigation, the investigations on influence of PCMs’ physicochemical properties on the optimum relative distance of orthogonal fins are numerically carried out. Influences of PCMs’ physicochemical properties including thermal conductivity, thermal expansion coefficient and viscosity on the optimum relative distance of the orthogonal fins are analysed. Results demonstrate that these physicochemical properties significantly influence the optimum relative distances. The optimum relative distance decreases from ~0.1633 to ~0.1020 when thermal conductivity increases from 0.1 W·m-1·K-1 to 1.5 W·m-1·K-1. When thermal expansion coefficient of PCM increases from 0.0001 K-1 to 0.005 K-1, the corresponding optimum relative distance decreases from ~0.1877 to ~0.0816. When viscosity of the liquid PCMs increases from 0.2 mPa·s to 80 mPa·s, the optimum relative distance of orthogonal fins increases from ~0.1224 to ~0.2245. The results supply an effective guideline to design an optimum orthogonally structured fins to enhance the average charging rate of organic PCMs with random physicochemical properties.Benli PengWenlong ShengMeizhuting QiuYong ZhouZhengyu HeHong WangFengmin SuAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Benli Peng Wenlong Sheng Meizhuting Qiu Yong Zhou Zhengyu He Hong Wang Fengmin Su Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement
description	Orthogonal fins made of a vertical and a horizontal fin shorten total charging time and enhance average charging rate of lowly conductive phase change materials (PCMs) such as paraffin wax. An optimum dimension of orthogonal fins exists during charging of paraffin wax under top heating. The optimum dimension is represented by the optimum relative distance. The relative distance d/lv is defined as the ratio of the distance between horizontal fin and bottom wall of enclosure to length of vertical fin. However, the physicochemical properties of PCMs are variant in practical. Their influences on this optimum relative distance of orthogonal fins are not conducted. In current investigation, the investigations on influence of PCMs’ physicochemical properties on the optimum relative distance of orthogonal fins are numerically carried out. Influences of PCMs’ physicochemical properties including thermal conductivity, thermal expansion coefficient and viscosity on the optimum relative distance of the orthogonal fins are analysed. Results demonstrate that these physicochemical properties significantly influence the optimum relative distances. The optimum relative distance decreases from ~0.1633 to ~0.1020 when thermal conductivity increases from 0.1 W·m-1·K-1 to 1.5 W·m-1·K-1. When thermal expansion coefficient of PCM increases from 0.0001 K-1 to 0.005 K-1, the corresponding optimum relative distance decreases from ~0.1877 to ~0.0816. When viscosity of the liquid PCMs increases from 0.2 mPa·s to 80 mPa·s, the optimum relative distance of orthogonal fins increases from ~0.1224 to ~0.2245. The results supply an effective guideline to design an optimum orthogonally structured fins to enhance the average charging rate of organic PCMs with random physicochemical properties.
format	article
author	Benli Peng Wenlong Sheng Meizhuting Qiu Yong Zhou Zhengyu He Hong Wang Fengmin Su
author_facet	Benli Peng Wenlong Sheng Meizhuting Qiu Yong Zhou Zhengyu He Hong Wang Fengmin Su
author_sort	Benli Peng
title	Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement
title_short	Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement
title_full	Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement
title_fullStr	Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement
title_full_unstemmed	Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement
title_sort	influence of phase change material physicochemical properties on the optimum fin structure in charging enhancement
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/48e6517f4f9b4760a2fd15197a85cd3f
work_keys_str_mv	AT benlipeng influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement AT wenlongsheng influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement AT meizhutingqiu influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement AT yongzhou influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement AT zhengyuhe influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement AT hongwang influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement AT fengminsu influenceofphasechangematerialphysicochemicalpropertiesontheoptimumfinstructureinchargingenhancement
_version_	1718426782337597440

Influence of Phase Change Material Physicochemical Properties on the Optimum Fin Structure in Charging Enhancement

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