外気導入モードによる不快指数と結露リスクへの影響に関する検討外気導入モードの違いがパッシブクーリング効果に及ぼす影響　その2

摘要

Ventilation is one of the most important techniques for cooling. However, the influence of humid must be taken into account when is ventilated under the hot and humid climate. In this paper, we discuss the passive cooling effect by the proposed ventilation mode which take account of humidity. The proposed ventilation mode are as follows: a ventilation mode where a plenty of natural ventilation operates when being outside air temperature during the period: 18℃ < AT < 27℃ (AT ambient temperature) throughout the year. Next, then the passive cooling effect is discussed based on the results of a series of parametric simulation studies. The cooling effect is verified in four ways: (l) hourly discomfort index fluctuation without air-conditioning, (2) hourly discomfort index fluctuation with air-conditioning, (3) monthly latent heat load with air-conditioning throughout the year, and (4) possibility of surface condensation by ventilation. The results are obtained as following:(l) Discomfort index large drop by ventilation mode in the nighttime, (2) ventilation mode reduce latent heat load. Furthermore, large thermal mass reduce latent heat load, and (3) large thermal mass reduces the fear of surface condensation.%夏期において、外気温が低下する夜間の外気導入は、室温を低下 させる効果があり、有効なパッシブクーリングの手法であることが 知られている。さらに、躯体の熱容量が大きければ、蓄冷効果によっ て日中の室温上昇を防ぐ効果がある。冷房を併用する場合であって もその負荷を削減することができるり。パッシブクーリング効果の 予測において、外気導入の設定を組み込むことは有効であり、さら に詳細な検討が重要な課題と考えられる。