確率モデルによる通風可能な時間数と省エネルギー効果の簡易推定法 : 自然通風に関する実測研究 その4  [in Japanese] SIMPLE PREDICTION METHOD OF AVAILABLE TIME OF CROSS-VENTILATION AND ENERGY CONSERVATION EFFECT BY PROBABILISTIC MODEL : Measurement survey on natural ventilation Part 4  [in Japanese]

The purpose of this study is to propose a simple and probabilistic method to predict both of the number of time when cross-ventilation is available and the energy conservation effect by cross-ventilation, which have important roles in cross-ventilation system planning. First, the simple model on available time of cross-ventilation was presented. On the basis of this model, we proposed the probabilistic model considering control conditions of outside temperature and wind velocity. Using the measurement results of statistical characteristics on indoor airflow and temperature in cross-ventilation state, the model was expanded into conditions of indoor temperature and airflow velocity. The conditions of the cross-ventilation time zone and indoor humidity were also examined. Second, statistical accuracy of the proposed model was examined by comparison with standard climate data in three cities. Finally, we presented the calculation results of energy conservation effect of cross-ventilation by this proposed model.