Study on Utilizing the Cooled Soil for Comfort Housing Design in Seasonal Hot-humid Areas

本研究的目的是了解各种地面接触房屋和具有屋顶山墙通风口与地板下通风口相结合的通风系统的活动地板房屋的热性能。结果如下。(1)如果九州北方传统住宅的围护结构和隔墙具有较大的热容量并通过夜间通风进行冷却，则可以将其用作可用的冷源。由于土壤热容量和地表蒸发的作用，土室内非常凉爽。(2)重要的是要保持屋顶隔热，外墙开口和遮阳装置。天花板上方和地板下方的空间作为住宅房间的热控制或热吸收空间，以应对外部天气条件。(3)南西诸岛的地面土壤不能用作冷却源，因为室外空气温度全天高于北方九州。(4)温铎的结构阻止了地面土壤作为冷却源的功能。然后在韩国传统住宅中，有必要有其他的架空地板房间，以加强交叉通风。(5)模拟结果表明，外保温地下室墙体使住宅房间冬暖夏凉。地板供冷供热系统与地面接触地板相结合，在中季可使室内温度舒适。(6)用计算机模拟程序PSSP同时计算建筑物内的空气流动和瞬态室温。PSSP可以计算各种类型的空气运动。

The objective of this study is to make clear thermal performance of various kinds of the earth-contact houses and the raised-floor houses having a ventilation system combining gable vents in the attic with relief vents beneath the floor. The results are concluded as follows.(1) The envelopes and partitions of the traditional houses in northern Kyushu can be used as available cooling sources in case that they have large heat capacity and are cooled by nocturnal ventilation. It is very cool in the earth room because of soil heat capacity and evaporation at the earth surface.(2) It is important to keep roof insulation, exterior wall openings and solar shading devices. The spaces over the ceiling and beneath the floor function as thermal controling or heat absorbing ones of the dwelling rooms against outside weather conditions.(3) The ground soil in Nansei Islands can not be used as a cooling source because the outdoor air temperature is higher all day long than that in northern Kyushu.(4) The Ondol's structure prevents the ground soil from functioning as a cooling source. and then in Korean traditional houses it is necessary to have the other raised-floor rooms to enhance cross ventilation.(5) As the simulation results, the outer insulated basement wall keeps the dwelling rooms cool in summer and warm in winter. The floor heating and cooling system combining with the earth-contact floor brings comfort indoor temperature in middle season.(6) Air movements and transient room temperatures in a building are simultaneously calculated by the computer simulation program called "PSSP". The PSSP can calculate various types of air movements.