干旱区生态环境知识资源中心(Arid): Energy Savings Resulting from Using a Near-Surface Earth-to-Air Heat Exchanger for Precooling in Hot Desert Climates

Arid

DOI	10.3390/en14238044
	Energy Savings Resulting from Using a Near-Surface Earth-to-Air Heat Exchanger for Precooling in Hot Desert Climates
	Pakari, Ali; Ghani, Saud
通讯作者	Pakari, A (corresponding author)，Qatar Univ, Coll Engn, Dept Mech & Ind Engn, POB 2713, Doha 2713, Qatar.
来源期刊	ENERGIES
EISSN	1996-1073
出版年	2021
卷号	14 期号:23
英文摘要	Given the substantial energy use for space cooling in buildings, integrating energy-efficient and sustainable cooling systems into buildings has become increasingly more important. Even though the cooling potential of a near-surface earth-to-air heat exchanger (EAHE) with grass cover was demonstrated in previous studies, the energy savings and environmental benefits resulting from using the EAHE have not yet been quantified. Therefore, in this study, we quantify the energy savings resulting from using a near-surface earth-to-air heat exchanger (EAHE) with grass-covered ground as a precooling unit in hot desert climates. The outlet air conditions of the EAHE during 9 months of the year (March to November), where space cooling is required, are predicted using a 3D transient CFD model, which is validated against field measurements. The EAHE is fabricated from a 1 mm thick aluminum tube with a diameter of 0.15 m and a length of 21.5 m, buried 0.4 m deep. The results showed that the EAHE can cool ambient air by up to 8.5 degrees C at an air flow rate of 607 m(3)/h, corresponding to a cooling capacity of 1700 W and a COP of 17. The daily average cooling capacity of the EAHE is about 560 W for an average operation period of 15.1 h per day. When used as a precooling unit for conventional cooling systems, the highest estimated monthly energy savings is 115 kWh, and the estimated annual savings is 741 kWh.
英文关键词	energy savings electricity savings precooling ground cooling computational fluid dynamics (CFD) transient simulations
类型	Article
语种	英语
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000735645900001
WOS关键词	COOLING PERFORMANCE ; GROUND COVER ; VENTILATION
WOS类目	Energy & Fuels
WOS研究方向	Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375822
作者单位	[Pakari, Ali; Ghani, Saud] Qatar Univ, Coll Engn, Dept Mech & Ind Engn, POB 2713, Doha 2713, Qatar
推荐引用方式 GB/T 7714	Pakari, Ali,Ghani, Saud. Energy Savings Resulting from Using a Near-Surface Earth-to-Air Heat Exchanger for Precooling in Hot Desert Climates[J],2021,14(23).
APA	Pakari, Ali,&Ghani, Saud.(2021).Energy Savings Resulting from Using a Near-Surface Earth-to-Air Heat Exchanger for Precooling in Hot Desert Climates.ENERGIES,14(23).
MLA	Pakari, Ali,et al."Energy Savings Resulting from Using a Near-Surface Earth-to-Air Heat Exchanger for Precooling in Hot Desert Climates".ENERGIES 14.23(2021).