다양한 형상의 수직형 지중열교환기에 대한 유동 및 열전달특성의 수치적 연구
Numerical Study on Flow and Heat Transfer Characteristics for Vertical Ground Heat Exchangers of Various Shapes
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Ground heat exchangers are the most important equipment for energy saving in the heating and cooling of buildingsusing geothermal heat. We report on a numerical study conducted to investigate the effect of various shapes for vertical ground heatexchanger system on its flow and heat transfer characteristics. The simulation is validated by comparing numerically calculated resultswith experimental results. The simulations are conducted for different tubing configurations of the ground loop which were U-tube,Branch-tubes, Annulus and Spline tube systems. The temperature distribution, heat transfer rate and the pressure drop are compared. The branch tube type ground heat exchanger showed the best heat transfer performance.
Abstract
Ground heat exchangers are the most important equipment for energy saving in the heating and cooling of buildingsusing geothermal heat. We report on a numerical study conducted to investigate the effect of various shapes for vertical ground heatexchanger system on its flow and heat transfer characteristics. The simulation is validated by comparing numerically calculated resultswith experimental results. The simulations are conducted for different tubing configurations of the ground loop which were U-tube,Branch-tubes, Annulus and Spline tube systems. The temperature distribution, heat transfer rate and the pressure drop are compared. The branch tube type ground heat exchanger showed the best heat transfer performance.
참고문헌 (14)
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