Performance of geothermal single well for intermittent heating

doi:10.1016/j.energy.2019.115858

	Performance of geothermal single well for intermittent heating
	Bu, Xianbiao 1,2,3; Jiang, Kunqing 1,4; Li, Huashan 1,2,3
刊名	ENERGY
	2019-11-01
卷号	186 页码:9
关键词	Intermittent heating Geothermal heating Commercial buildings heating Deep borehole heat exchanger Single well geothermal heating
ISSN号	0360-5442
DOI	10.1016/j.energy.2019.115858
通讯作者	Li, Huashan(lihs@ms.giec.ac.cn)
英文摘要	Single well geothermal heating (SWGH) can widely be used all around the world, no matter if there are rich hot water reservoirs. However, its promotion is limited due to long payback period. To reduce the payback period, the intermittent operation mode is proposed in terms of the commercial buildings. An experimental test for continuous heating is firstly carried out, and the extracted thermal output is 448.49 kW with the static payback period of 7.17 years. A mathematical model is then developed in order to simulate the performance of intermittent operation. The simulated results show that the extracted thermal output for intermittent operation is always greater than that for continuous operation due to having the heat recovery period. The extracted thermal output is respectively 619.12 and 587.51 kW in the first and the tenth heating season at the fixed injection temperature and velocity. The extracted thermal output can keep stable if changing the injection temperature and velocity, and thus the imbalance of the extracted thermal output among different heating seasons can be adjusted. The static payback time for intermittent operation is reduced to 5.16 years compared to continuous operation, which will speed up the spreading and application of SWGH technology. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Key Research and Development Program of China[2018YFB1501805] ; Natural Science Foundation of Guangdong Province[2018A030313018]
WOS关键词	ABANDONED OIL-WELLS ; POWER-GENERATION ; GAS-WELLS ; SYSTEM ; ENERGY ; MODEL ; SIMULATION ; OPERATION ; EXCHANGER ; FLUID
WOS研究方向	Thermodynamics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000492797300045
资助机构	National Key Research and Development Program of China ; Natural Science Foundation of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26202]
专题	中国科学院广州能源研究所
通讯作者	Li, Huashan
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Bu, Xianbiao,Jiang, Kunqing,Li, Huashan. Performance of geothermal single well for intermittent heating[J]. ENERGY,2019,186:9.
APA	Bu, Xianbiao,Jiang, Kunqing,&Li, Huashan.(2019).Performance of geothermal single well for intermittent heating.ENERGY,186,9.
MLA	Bu, Xianbiao,et al."Performance of geothermal single well for intermittent heating".ENERGY 186(2019):9.