Numerical simulation of a supercritical CO2 geothermosiphon
Numerical simulation of a supercritical CO2 geothermosiphon
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DOI：
10.1016/j.icheatmasstransfer.2010.08.016
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发表时间：
2010-12
影响因子：
7
通讯作者：
M. H. Fard;K. Hooman;H. Chua
中科院分区：
文献类型：
--
作者：
M. H. Fard;K. Hooman;H. Chua
使用商用软件CFX对co2地热虹吸的热水力性能进行了数值研究。本文对一个简单的工程（或增强型）地热系统（EGS）进行了数值模拟，该系统由注入井、生产井和储层组成。水和二氧化碳都作为工作流体进行了测试。前一种流体因其可用性而非常受欢迎，而后一种流体具有诸如良好的热力学性质以及固有的地质隔离可能性等优点。然而，在公开文献中没有对这种co2地热虹吸系统的详细分析。与水基系统相比，co2地热虹吸可以在较低的压降下实现较高的储层抽热速率，并给出了一般标准。
The thermo-hydraulic performance of a CO2geothermosiphon has been numerically investigated using the commercially available software CFX. A simple Engineered (or Enhanced) Geothermal System, EGS, consisting of an injection and a production well as well as a reservoir is numerically simulated. Both water and carbon dioxide have been examined as the working fluid. While the former fluid has been very popular for its availability, the latter offers advantages such as favorable thermodynamic properties as well as the inherent possibility of geosequestration. However, detailed analysis of such CO2geothermosiphon systems is not available in the open literature. Higher heat extraction rate from the reservoir at lower pressure drops for a CO2geothermosiphon, compared to water-based systems, can be achieved and general criteria for that are presented.