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The Fracture Influence on the Energy Loss of Compressed Air Energy Storage in Hard Rock

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  • Hehua Zhu
  • Xingyu Chen
  • Yongchang Cai
  • Jianfeng Chen
  • Zhiliang Wang

Abstract

A coupled nonisothermal gas flow and geomechanical numerical modeling is conducted to study the influence of fractures (joints) on the complex thermohydromechanical (THM) performance of underground compressed air energy storage (CAES) in hard rock caverns. The air-filled chamber is modeled as porous media with high porosity, high permeability, and high thermal conductivity. The present analysis focuses on the CAES in hard rock caverns at relatively shallow depth, that is, ≤100 m, and the pressure in carven is significantly higher than ambient pore pressure. The influence of one discrete crack and multiple crackson energy loss analysis of cavern in hard rock media are carried out. Two conditions are considered during each storage and release cycle, namely, gas injection and production mass being equal and additional gas injection supplemented after each cycle. The influence of the crack location, the crack length, and the crack open width on the energy loss is studied.

Suggested Citation

  • Hehua Zhu & Xingyu Chen & Yongchang Cai & Jianfeng Chen & Zhiliang Wang, 2015. "The Fracture Influence on the Energy Loss of Compressed Air Energy Storage in Hard Rock," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-11, October.
    • Handle: RePEc:hin:jnlmpe:921413
    DOI: 10.1155/2015/921413
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    Cited by:

    1. Julian David Hunt & Behnam Zakeri & Andreas Nascimento & Diego Augusto de Jesus Pacheco & Epari Ritesh Patro & Bojan Đurin & Márcio Giannini Pereira & Walter Leal Filho & Yoshihide Wada, 2023. "Isothermal Deep Ocean Compressed Air Energy Storage: An Affordable Solution for Seasonal Energy Storage," Energies, MDPI, vol. 16(7), pages 1-18, March.

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