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An Experimental Study on the Availability of Underground Air Energy Source in Non-Activity Volcanic Island

비활성 화산지역의 지중공기열원 에너지 이용에 관한 실험적 연구

  • Kim, Yong-Hwan (JESCO. Ltd.) ;
  • Park, Sung-Seek (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Woo-Jung (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Nam-Jin (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Hyun, Myung-Taek (Department of Mechanical Engineering, Jeju National University)
  • Received : 2014.08.30
  • Accepted : 2014.10.27
  • Published : 2014.10.30

Abstract

This study introduces and analyzes the geothermal energy availability in Non-active volcanic region. Jeju island in Korea is situated in non-active volcanic region. The island is composed of rock with high pore and clinker, scoria geological layer formed by volcanic activity about two million ago. Volcanic geological layers with porous characteristics have air, vapor, water and a underground structure through which air or water can move easily. For this reason, it is probable that the mechanism of energy acquisition is by convective heat transfer. For this presumption, the availability of underground air as energy source has been studied here through theoretical analysis and experimental data. The energy output of our system ranged from 2,485,076 kJ/day to 4,060,978 kJ/day monitored using variable velocity air flow controller. Our system has capability to be a reliable energy source irrespective of environmental changes. Consequently, underground air can be utilized for energy source and provide the optimal design of heating/cooling system.

Keywords

References

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Cited by

  1. Performance of the Heat Pump with a Air-Water Direct Contact Heat Exchanger for Greenhouse Heating vol.13, pp.3, 2017, https://doi.org/10.7849/ksnre.2017.9.13.3.058