Experimental and simulation studies of geothermal single well for building heating

被引：57
作者：
Bu, Xianbiao [1 ,2 ,3 ]
Ran, Yunmin [1 ,4 ]
Zhang, Dongdong [5 ]
机构：
[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
[5] Jimo Thermal Power Plant, Qingdao 266200, Shandong, Peoples R China
来源：
RENEWABLE ENERGY | 2019年 / 143卷
关键词：
Geothermal heating; Single well; Deep borehole heat exchanger; Well spacing; Experimental study; ABANDONED OIL-WELLS; POWER-GENERATION; GAS-WELLS; EXCHANGER; ENERGY; FLUID; PERFORMANCE; PREDICTION; EXTRACTION; MODEL;
D O I：
10.1016/j.renene.2019.06.005
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The hydrothermal geothermal heating depends heavily on the existence of hot water reservoir and the shallow ground source heat pump occupies large area. Here a single well geothermal heating (SWGH) technology is shown, which does not depend on the existence of hot water reservoir. An experimental research on SWGH is carried out and a mathematical model describing the heat transfer through surrounding rock to well tube as well as inside the geothermal well is developed. The mathematical model validated by experimental data is then used to predict the performance of SWGH. It is found that the average extracted thermal output is respectively 448.49 and 413.63 kW in the first and tenth heating seasons. By changing the injection water temperature and velocity, SWGH system can meet the requirement of building heating load varying with the outdoor air temperature and adjust the imbalance of the extracted thermal output among different heating seasons. Understanding these will enable us to better apply SWGH technology. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1902 / 1909
页数：8
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