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1차원 수치모델과 현지측정에 의한 지중열전도율 및 보어홀 전열저항 해석에 관한 연구

A Study on the Estimation of Soil Formation Thermal Conductivities and Borehole Resistances with One-Dimensional Numerical Model and In-Situ Field Tests

설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering v.18 no.10 , 2006년, pp.783 - 790  
이세균 (충북대학교 기계공학부 ) ;  우정선 ( 한국에너지기술연구원 ) ;  노정근 ( 충북대학교 ) ;  김대기 ( 충북대학교 기계공학과 대학원)
Abstract

A one-dimensional numerical model coupled with parameter estimation is used to predict the effective thermal conductivities of soil formations and borehole resistances from in situ field test data. In this application a new method of using initial ignoring time (IIT) obtained from error estimation is tried and turned out to be successful in determining soil thermal conductivities. This method is used for single-U and double-U borehole system. The results of this method are compared and agreed well with those of existing software (GPM) in the analysis of single-U borehole data. In the analysis of double-U borehole data this method seems to be better in predicting soil and borehole properties.

주제어

#보어홀 열교환기   #1차원 모델   #지중열전도율   #보어홀 저항  

저자의 다른 논문

이세균(26) 우정선(22) 노정근(24) 김대기(4)

참고문헌 (9)

  1. Lee, S. K., Kim, D. K., Woo, J. S. and Park, S.I., 2005, A study on the thermal behavior of vertical borehole heat exchanger with 1-dimensional model, Journal of the Korean Solar Energy Society, Vol. 25, No.1, pp.97-104 
  2. Woo, J. S. and Lee, S. K., 2005, A Study on the In-Situ Geothermal Conductivity Testing and Analysis, Final Report to Ministry of Commerce, Industry and Energy, Report No. 2002-N-GE08-P-01 
  3. Ingersoll, L. R. and Plass, H. J., 1948, Theory of the ground pipe heat source for the heat pump, ASHVE Transactions, Vol. 47, pp.119-121 
  4. Shonder, J. A. and Beck, J. V., 1999, Determining effective soil formation thermal properties from field data using. a parameter estimation technique, ASHRAE Transactions, Vol. 105, Pt. 1, pp. 458-466 
  5. Claesson, J. and Eskilson, P., 1988, Conductive heat extraction to a deep borehole: Thermal analyses and dimensioning rules, Energy, Vol. 13, No.6, pp.509-527 
  6. Kavanaugh, S. P., 2000, Investigation of Methods for Determining Soil and Rock Formation Thermal Properties from Short-Term Field Tests, ASHRAE 1118-TRP 
  7. Hellstrom, G. and Sanner, B., 2000, PC-programs for borehole heat exchanger design, Asterweg 2, D-35633, Lahnau, Germany 
  8. Yavuzturk, C., 1999, Modeling of Vertical Ground Loop Heat Exchanger for Ground Source Heat Pump Systems, Ph. D. Thesis, Oklahoma State University, Stillwater, OK 
  9. Carslaw, H. S. and Jaeger, J. C., 1959, Conduction of Heat in Solids, 2nd ed., Claremore Press, Oxford 

이 논문을 인용한 문헌 (8)

  1. Sohn, Byong-Hu 2007. "Evaluation of Ground Effective Thermal Conductivity and Borehole Effective Thermal Resistance from Simple Line-Source Model" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 19(7): 512~520 
  2. Lee, Se-Kyoun ; Woo, Joung-Son ; Kim, Dae-Ki 2008. "A Study of Determining Initial Ignoring Time of Line Source Model used in Estimating the Effective Soil Formation Thermal Conductivities" 에너지공학 = Journal of energy engineering, 17(3): 167~174 
  3. Sohn, Byong-Hu 2008. "Thermal Conductivity Measurement of Sand-Water Mixtures Used for Backfilling Materials of Vertical Boreholes or Horizontal Trenches" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 20(5): 342~350 
  4. Han, Hwa-Taik ; Shin, Dong-Sin ; Choi, Chang-Ho ; Lee, Dae-Young ; Kim, Seo-Young ; Kwon, Yong-Il 2008. "Recent Progress in Air Conditioning and Refrigeration Research: A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2006" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 20(6): 427~446 
  5. Sohn, Byong-Hu 2008. "Predicting the Effective Thermal Conductivity of Some Sand-Water Mixtures Used for Backfilling Materials of Ground Heat Exchanger" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 20(9): 614~623 
  6. Lee, Se-Kyoun ; Woo, Joung-Son 2009. "A Study of the Effect of Borehole Thermal Resistance on the Borehole Length" 한국태양에너지학회 논문집 = Journal of the Korean Solar Energy Society, 29(5): 20~27 
  7. Lee, Se-Kyoun ; Woo, Joung-Son ; Ro, Jeong-Geun 2010. "A Study of the Effect of Grouting Region on the Solution of Line Source Analysis" 에너지공학 = Journal of energy engineering, 19(3): 143~150 
  8. Lim, Hyo-Jae ; Kong, Hyoung-Jin ; Kang, Sung-Jae ; Choi, Jae-Ho 2011. "The Effects of the Installation Conditions of Ground Loop Heat Exchanger to the Thermal Conductivity and Borehole Resistance" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 23(2): 95~102 

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