A Coupled Thermo-Hydro-Mechanical Model of Jointed Hard Rock for Compressed Air Energy Storage

被引：75
|
作者：
Zhuang, Xiaoying [1 ,2 ]
Huang, Runqiu [2 ]
Liang, Chao [3 ]
Rabczuk, Timon [4 ,5 ]
机构：
[1] Tongji Univ, Dept Geotech Engn, Natl Key Lab Disaster Reduct & Protect, Shanghai 200092, Peoples R China
[2] State Key Lab Geohazard Prevent & Geoenvironm, Chengdu, Peoples R China
[3] Stanford Univ, Sch Earth Sci, Dept Geophys, Stanford, CA 94305 USA
[4] Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, Germany
[5] Korea Univ, Sch Civil Environm & Architectural Engn, Seoul, South Korea
来源：
MATHEMATICAL PROBLEMS IN ENGINEERING | 2014年 / 2014卷
关键词：
MESHFREE METHOD; ELEMENT-FREE; PARTITION; STABILITY; CAVERNS; UNITY;
D O I：
10.1155/2014/179169
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Renewable energy resources such as wind and solar are intermittent, which causes instability when being connected to utility grid of electricity. Compressed air energy storage (CAES) provides an economic and technical viable solution to this problem by utilizing subsurface rock cavern to store the electricity generated by renewable energy in the form of compressed air. Though CAES has been used for over three decades, it is only restricted to salt rock or aquifers for air tightness reason. In this paper, the technical feasibility of utilizing hard rock for CAES is investigated by using a coupled thermo-hydro-mechanical (THM) modelling of nonisothermal gas flow. Governing equations are derived from the rules of energy balance, mass balance, and static equilibrium. Cyclic volumetric mass source and heat source models are applied to simulate the gas injection and production. Evaluation is carried out for intact rock and rock with discrete crack, respectively. In both cases, the heat and pressure losses using air mass control and supplementary air injection are compared.
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收藏
页数：11
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