Comparative Investigation on the Heat Transfer Characteristics of Gaseous CO2 and Gaseous-Water Flowing Through a Single Granite Fracture
文献类型：期刊论文
| 作者 | Bai, Bing1; He, Yuanyuan1,2; Li, Xiaochun1
|
| 刊名 | INTERNATIONAL JOURNAL OF THERMOPHYSICS
 |
| 出版日期 | 2017 |
| 卷号 | 38期号:11页码:- |
| 关键词 | Flow and heat transfer Gaseous CO2 Gaseous water HDR Single fracture |
| ISSN号 | 0195-928X |
| DOI | 10.1007/s10765-017-2304-9 |
| 英文摘要 | CO2 and water are two commonly employed heat transmission fluids in several fields. Their temperature and pressure determine their phase states, thus affecting the heat transfer performance of the water/CO2. The heat transfer characteristics of gaseous CO2 and gaseous water flowing through fractured hot dry rock still need a great deal of investigation, in order to understand and evaluate the heat extraction in enhanced geothermal systems. In this work, we develop a 2D numerical model to compare the heat transfer performance of gaseous CO2 and gaseous water flowing through a single fracture aperture of 0.2 mm in a phi 50 x 50 mm cylindrical granite sample with a confining temperature of 200 degrees C under different inlet mass flow rates. Our results indicate that: (1) the final outlet temperatures of the fluid are very close to the outer surface temperature under low inlet mass flow rate, regardless of the sample length. (2) Both the temperature of the fluid (gaseous CO2/gaseous water) and inner surface temperature rise sharply at the inlet, and the inner surface temperature is always higher than the fluid temperature. However, their temperature difference becomes increasingly small. (3) Both the overall heat transfer coefficient (OHTC) and local heat transfer coefficient (LHTC) of gaseous CO2 and gaseous water increase with increasing inlet mass flow rates. (4) Both the OHTC and LHTC of gaseous CO2 are lower than those of gaseous water under the same conditions; therefore, the heat mining performance of gaseous water is superior to gaseous CO2 under high temperature and low pressure. |
| WOS研究方向 | Thermodynamics ; Chemistry ; Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000413910400003 |
| 出版者 | SPRINGER/PLENUM PUBLISHERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4160]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.Univ Chinese Acad Sci |
| 推荐引用方式 GB/T 7714 | Bai, Bing,He, Yuanyuan,Li, Xiaochun. Comparative Investigation on the Heat Transfer Characteristics of Gaseous CO2 and Gaseous-Water Flowing Through a Single Granite Fracture[J]. INTERNATIONAL JOURNAL OF THERMOPHYSICS,2017,38(11):-. |
| APA | Bai, Bing,He, Yuanyuan,&Li, Xiaochun.(2017).Comparative Investigation on the Heat Transfer Characteristics of Gaseous CO2 and Gaseous-Water Flowing Through a Single Granite Fracture.INTERNATIONAL JOURNAL OF THERMOPHYSICS,38(11),-. |
| MLA | Bai, Bing,et al."Comparative Investigation on the Heat Transfer Characteristics of Gaseous CO2 and Gaseous-Water Flowing Through a Single Granite Fracture".INTERNATIONAL JOURNAL OF THERMOPHYSICS 38.11(2017):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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