A novel enhanced deep borehole heat exchanger for building heating
文献类型：期刊论文
| 作者 | He, Yujiang2,3; Bu, Xianbiao1
|
| 刊名 | APPLIED THERMAL ENGINEERING
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 178页码:6 |
| 关键词 | Enhanced deep borehole heat exchanger Geothermal heating Composite filler Filler leakage Leakage formation Graphene |
| ISSN号 | 1359-4311 |
| DOI | 10.1016/j.applthermaleng.2020.115643 |
| 通讯作者 | Bu, Xianbiao(buxb@ms.giec.ac.cn) |
| 英文摘要 | Deep borehole heat exchanger (DBHE) technology can be used in various regions due to without dependence on the hot water reservoir. However, its performance can hardly be improved due to poor thermal conductivity of rocks and cement. Here a novel enhanced deep borehole heat exchanger (EDBHE) is first proposed, which applies composite filler, cement and well tube. To depress thermal resistance, graphene is used to mix with ordinary mud and cement respectively to prepare composite filler and composite cement. Especially composite filler is controlled deliberately to flow into leakage formation by adjusting its density, viscosity and back pressure in order to improve the thermal conductivity of surrounding rocks. We find that the extracted thermal output from EDBHE is 1002.34 kW, which is 2.36 times that of DBHE (424.45 kW). EDBHE can be used in low water output zone and difficult recharge zone even dry hole zone with leakage formation, which will increase geothermal heating area substantially. |
| WOS关键词 | ABANDONED OIL-WELLS ; GEOTHERMAL-ENERGY ; SYSTEM ; SIMULATION ; EXTRACTION ; EGS |
| 资助项目 | National Natural Science Foundation of China[41972314] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000552131100114 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/27505]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Bu, Xianbiao |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Minist Nat Resources, Technol Innovat Ctr Geothermal & Hot Dry Rock Exp, Shijiazhuang 050061, Hebei, Peoples R China 3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Yujiang,Bu, Xianbiao. A novel enhanced deep borehole heat exchanger for building heating[J]. APPLIED THERMAL ENGINEERING,2020,178:6. |
| APA | He, Yujiang,&Bu, Xianbiao.(2020).A novel enhanced deep borehole heat exchanger for building heating.APPLIED THERMAL ENGINEERING,178,6. |
| MLA | He, Yujiang,et al."A novel enhanced deep borehole heat exchanger for building heating".APPLIED THERMAL ENGINEERING 178(2020):6. |
入库方式： OAI收割
来源：广州能源研究所
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