Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants

In the present study, the phase change material (PCM) layer thickness of the top and bottom PCMs change gradually with constant the middle PCM layer thickness for the three-layers thermocline thermal energy storage (TES) tank. It has been studied using spherical capsules packed with three types of P...

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Autores principales:	Karem Elsayed Elfeky, Abubakar Gambo Mohammed, Qiuwang Wang
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/e0cb42c27156494996370fbe0ec62db5
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spelling	oai:doaj.org-article:e0cb42c27156494996370fbe0ec62db52021-11-15T21:49:04ZNumerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants10.3303/CET21880142283-9216https://doaj.org/article/e0cb42c27156494996370fbe0ec62db52021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11807https://doaj.org/toc/2283-9216In the present study, the phase change material (PCM) layer thickness of the top and bottom PCMs change gradually with constant the middle PCM layer thickness for the three-layers thermocline thermal energy storage (TES) tank. It has been studied using spherical capsules packed with three types of PCMs with different thermophysical properties. A transient two-phase dispersion-concentric (D-C) model is used to calculate the process of phase change inside pellets to identify the temperature allocation. The method of heat transfer among molten salt and PCMs capsules is extensively discussed, with multiple numerical results shown. The results show that the thickness of the PCM layer has a high impact on the thermal performance of the TES tank. As the layer thickness of the top PCM increases, the time required to discharge the thermocline TES tank increases. The (80 % high phase change material (HPCM) -10 % intermediate phase change material (IPCM) - 10 % low phase change material (LPCM)) configuration has 14.6 %, 27.2 %, and 46.8 % higher overall efficiency than (33.3 % HPCM - 33.3 % IPCM -33.3 % LPCM) configuration, (70 % HPCM - 10 % IPCM - 20 % LPCM) configuration, and (10 % HPCM -10 % IPCM - 80 % LPCM) configuration. In contrast, the (80 % HPCM - 10 % IPCM - 10 % LPCM) configuration shows the highest capacity and utilization ratio.Karem Elsayed ElfekyAbubakar Gambo MohammedQiuwang WangAIDIC 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 Karem Elsayed Elfeky Abubakar Gambo Mohammed Qiuwang Wang Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants
description	In the present study, the phase change material (PCM) layer thickness of the top and bottom PCMs change gradually with constant the middle PCM layer thickness for the three-layers thermocline thermal energy storage (TES) tank. It has been studied using spherical capsules packed with three types of PCMs with different thermophysical properties. A transient two-phase dispersion-concentric (D-C) model is used to calculate the process of phase change inside pellets to identify the temperature allocation. The method of heat transfer among molten salt and PCMs capsules is extensively discussed, with multiple numerical results shown. The results show that the thickness of the PCM layer has a high impact on the thermal performance of the TES tank. As the layer thickness of the top PCM increases, the time required to discharge the thermocline TES tank increases. The (80 % high phase change material (HPCM) -10 % intermediate phase change material (IPCM) - 10 % low phase change material (LPCM)) configuration has 14.6 %, 27.2 %, and 46.8 % higher overall efficiency than (33.3 % HPCM - 33.3 % IPCM -33.3 % LPCM) configuration, (70 % HPCM - 10 % IPCM - 20 % LPCM) configuration, and (10 % HPCM -10 % IPCM - 80 % LPCM) configuration. In contrast, the (80 % HPCM - 10 % IPCM - 10 % LPCM) configuration shows the highest capacity and utilization ratio.
format	article
author	Karem Elsayed Elfeky Abubakar Gambo Mohammed Qiuwang Wang
author_facet	Karem Elsayed Elfeky Abubakar Gambo Mohammed Qiuwang Wang
author_sort	Karem Elsayed Elfeky
title	Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants
title_short	Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants
title_full	Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants
title_fullStr	Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants
title_full_unstemmed	Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants
title_sort	numerical study to investigate the thickness of the pcm layer for the three layers tank for the csp plants
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/e0cb42c27156494996370fbe0ec62db5
work_keys_str_mv	AT karemelsayedelfeky numericalstudytoinvestigatethethicknessofthepcmlayerforthethreelayerstankforthecspplants AT abubakargambomohammed numericalstudytoinvestigatethethicknessofthepcmlayerforthethreelayerstankforthecspplants AT qiuwangwang numericalstudytoinvestigatethethicknessofthepcmlayerforthethreelayerstankforthecspplants
_version_	1718426816816873472

Numerical Study to Investigate the Thickness of the PCM Layer for the Three Layers Tank for the CSP Plants

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