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DOI	10.1016/j.renene.2021.04.026
	Capabilities of alpha-Al2O3, gamma-Al2O3, and bentonite dry powders used in flat plate solar collector for thermal energy storage
	Akbarzadeh, Alireza; Ahmadlouydarab, Majid; Niaei, Aligholi
通讯作者	Ahmadlouydarab, M (corresponding author), Univ Tabriz, Fac Chem & Petr Engn, Tabriz 5166616471, East Azerbaijan, Iran.
来源期刊	RENEWABLE ENERGY
ISSN	0960-1481
EISSN	1879-0682
出版年	2021
卷号	173 页码:704-720
英文摘要	In this experimental study, a flat plate solar collector was constructed and examined for absorbing and transferring heat from soil to fluid. The light source was an infrared lamp with average illumination intensity of 3150 lux. For the first time, alpha-Al2O3, gamma-Al2O3, and Bentonite powder were used for heat absorption, storage, and its transfer to the operating fluid. The average particles size of alpha-Al2O3, gamma-Al2O3, and Bentonite were 150 mm, 45 mm, and 75 mm, respectively. The operating fluid was distilled water. The absorption efficiency of alpha-Al2O3, gamma-Al2O3 and Bentonite was 5.50%, 30.90%, and 9.99%, respectively, in the absence of operating fluid. However, the absorption efficiency of alpha-Al2O3, gamma-Al2O3 and bentonite powders increases to 55.23%, 89.45%, and 70.50%, respectively in presence of circulating fluid circulates. The physical properties of all samples were evaluated to check the repeatability of the experiments using various analyses i.e., FT-IR, XRD, SEM, XRF, DSC and BET. Results indicated, before and after infrared radiation, there are no significant changes in the state of gamma-Al2O3 and bentonite samples. According to the results of BET and SEM analyses, due to the higher surface areas of gamma-Al2O3 and Bentonite than alpha-Al2O3, they have more active sites. Results also indicated that the caking of the sample particles occurs less frequently. (C) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Flat plate solar collector Efficiency Thermal energy absorption and retention Renewable energy alpha-Al2O3 gamma-Al2O3 Bentonite powder
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000648577100013
WOS关键词	PARTICLE-SIZE ; MOISTURE TRANSFER ; HEAT-TRANSFER ; SURFACE-AREA ; COUPLED HEAT ; DESERT SAND ; PERFORMANCE ; NANOFLUID ; ALUMINA ; ABSORPTION
WOS类目	Green & Sustainable Science & Technology ; Energy & Fuels
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351564
作者单位	[Akbarzadeh, Alireza; Ahmadlouydarab, Majid; Niaei, Aligholi] Univ Tabriz, Fac Chem & Petr Engn, Tabriz 5166616471, East Azerbaijan, Iran
推荐引用方式 GB/T 7714	Akbarzadeh, Alireza,Ahmadlouydarab, Majid,Niaei, Aligholi. Capabilities of alpha-Al2O3, gamma-Al2O3, and bentonite dry powders used in flat plate solar collector for thermal energy storage[J],2021,173:704-720.
APA	Akbarzadeh, Alireza,Ahmadlouydarab, Majid,&Niaei, Aligholi.(2021).Capabilities of alpha-Al2O3, gamma-Al2O3, and bentonite dry powders used in flat plate solar collector for thermal energy storage.RENEWABLE ENERGY,173,704-720.
MLA	Akbarzadeh, Alireza,et al."Capabilities of alpha-Al2O3, gamma-Al2O3, and bentonite dry powders used in flat plate solar collector for thermal energy storage".RENEWABLE ENERGY 173(2021):704-720.