한국신재생에너지학회:학술대회논문집
- 2007.11a
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- Pages.550-554
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- 2007
A Study of Borehole Thermal Behavior with 1-Dimensional Model;Field Test Analysis included
1차원 모델에 의한 보어홀 열거동 해석 및 현지측정
- Published : 2007.11.06
Abstract
A one-dimensional heat transfer model coupled with parameter estimation is developed in this study to predict the effective thermal conductivities of soil formation 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. The validity of this model is accomplished through comparison of the predicted temperature profiles of the model with the data from laboratory scale experimental setting. Eleven test boreholes were constructed in Ochang, Chungcheong Buk Do, and thermal response test was carried out with each borehole. The results of the in situ tests were analyzed with our 1-D numerical model and compared with the results of line source method. The comparison shows that the thermal properties from line source method is a little lower (
Keywords
- One-dimensional heat transfer model;
- Parameter estimation;
- Initial Ignoring Time;
- Borehole heat exchanger;
- Effective tube
- 1차원 열전달 모델;
- 계수 추정법;
- 초기제외시간;
- 보어홀 열교환기;
- 유효튜브;