DOI QR코드

DOI QR Code

A Study on the Yearly Measurement and Numerical Analysis of Underground Temperature

년간 지중온도의 실측 및 수치해석에 관한 연구

  • Shin, Y.H. (Department of Energy and Mechanical Engineering, GyeongSang National University) ;
  • Tanshen, Md. Riyad (Department of Energy and Mechanical Engineering, GyeongSang National University) ;
  • Chung, H.C. (Department of Energy and Mechanical Engineering, GyeongSang National University) ;
  • Jeong, H.M. (Department of Energy and Mechanical Engineering, GyeongSang National University)
  • Received : 2011.08.24
  • Accepted : 2012.01.11
  • Published : 2012.04.30

Abstract

The geothermal energy is one of the renewable energy sources which can contribute in accomplishing a vision and goal of the national plan on energy for a government suggestion. Especially, the geothermal energy is evaluated as the nearly unlimited resources. The yearly underground temperature distribution by depth is very important to the design of air-conditioning system which uses a geothermal energy. Furthermore, there has no data for comparisons to numerical analysis. In this study, the yearly underground temperature is measured under the depth of 2 m in Tongyeong, and these data are compared with numerical analysis results for checking the accuracy. The results showed that the experimental temperature and numerical results had a good agreements and these results will be utilized to predict a performance of air-conditioning system for using a geothermal energy.

Keywords

References

  1. U.S. Environmental Protection Agency, 1996, Space Conditioning : The Next Frontier - The Potential of Advanced Residential Space Heating Technologies for Reduction Pollutionand Saving Customers Money.
  2. Rybach, L., Eugster, W. J., Hopkirk, R. J., and Kaelin, B., 1992, "Borehole heat exchangers: Long-term operational charac-teristics of a decentral geothermal heating system", Geothermics, Vol. 21, pp. 864-867.
  3. Karsura, T., Nagano, K., Takeda, S., 2008, "Method of calcuation of the ground temperature for mulitple ground heat exchangers", Applied Thermal Engineering, Vol. 28, pp. 1995-2004. https://doi.org/10.1016/j.applthermaleng.2007.12.013
  4. Hepbasli, A., Akdemir, O., Hancioglue, E., 2003, "Experimental study of a closed loop vertical ground source heat pump system", Energy Conversion and Management, Vol. 44, pp. 527-548. https://doi.org/10.1016/S0196-8904(02)00073-0
  5. Y. M. Jeong et al., 2008, "Measurement of Ground Thermal Conductivity and Characteristics of Thermal Diffusion by the Ground Heat Exchanger" Journal of Society of Air condition -ing and refrigerating Engineers of Korea, Vol. 20, No. 11, pp. 739-745.
  6. W. S. Woo, J. H. Kim, S. H. Shin and G. I. Hwang, 2007, "The Comparison of the EWT&LWT between Field Measurement and CFD of Vertical-type Geothermal Heat Exchanger", Journal of Korea Society of Geothermal Energy Engineers Vol. 3, No. 1, pp. 11-16.
  7. H. M. Jeong and H. S. Chung, 1998, "A Study on the Yearly Thermal Environmental Characteristics in Underground Space", Journal of Korea society for Power System Engineering, Vol. 2, No. 3, pp. 27-33.
  8. ASHRAE, ASHRAE Fundermentals, ASHRAE, 1993.

Cited by

  1. Feasibility Study of Ground Source Heat Pump System Considering Underground Thermal Properties vol.11, pp.7, 2018, https://doi.org/10.3390/en11071786
  2. Temperature Prediction of Road Anti-Frost Layer vol.19, pp.7, 2019, https://doi.org/10.9798/kosham.2019.19.7.39