The Improvement of the Performance of Solar Cooling and Heating Systems (III) - Development of One Dimensional Analytic Model for the Evaluation of Stratification Coefficients -

태양열에 의한 냉방 및 난방시스템의 성능향상 (III) - 성층화계수의 예측을 위한 1차원 해석모델의 개발 -

A one dimensional analytic model for the prediction of the stratification coefficient of a liquid-based solar heating system is developed. The stratification coefficient, $K_s$, is defined as the ratio of the actual useful energy gain to the energy gain that would be achieved if there were no thermal stratification in the storage tank. Previous studies incorporated only collector-side effects, but in this study both the collector and load-side effects are included for the overall performance evaluation.