Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)
- Volume 11 Issue 3
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- Pages.339-348
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- 1999
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- 1229-6422(pISSN)
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- 2465-7611(eISSN)
Numerical analysis of the vertical tube-in-tube ground coil heat exchanger
수직으로 매설된 이중관형 지중 열교환기에 대한 해석적인 연구
Abstract
A computer model was developed in order to predict the temperature distribution and the performance of the vertical tube-in-tube ground coil heat exchanger. This model has been validated by experimental results conducted by ORNL. The heat exchanger performance with the variation of the length is calculated and compared. As results, the heat exchanger performance is proportional to the length but the performance per unit length decreases. The minimum performance of 70m - PVC heat exchanger during cyclic operation for a week is obtained 20,054kJ/h for cooling operation and 13,915kJ/h for heating operation. And minimum temperature difference is
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