| Tradition residential buildings are not only a symbol of ancient intelligence buyalso a kind development with superior building experience. The weather in Chinavaries greatly according to the region and to address all kinds of climate, people indifferent regions take many measures to better living comfort. Among these measures,ventilation measures affect our thermal comfort significantly. Organization andresearch these measures is not only a kind of inheritance of traditional culture but alsoa reference for building design currently. The weather in the regions south of YangtzeRiver is wet and hot, and for dealing with these conditions, people here adopt manyways of ventilation. These natural ventilation measures and experience was studied inthis paper.Firstly, the background of the climate in objective regions was analyzed byinvestigating and interviewing in-site buildings or people. The understanding of thesebuildings and ventilation conditions at first sight or thought enabled a solid foundationfor the further research.Secondly, actual measurement was taken in some chosen traditional or modernresidential buildings. The measurement parameters mainly included outdoor thermalenvironment and wind conditions, indoor and outdoor temperature, relative humidity,wind speed. Meanwhile, the architectural graph was drawn. Three cases made in thispaper indicated that in modern buildings mainly relied on wind pressure for ventilationwhereas traditional ones on thermal pressure. Besides, CFD software was used to simulate the indoor air distribution of therepresentative buildings of traditional and modern buildings respectively. Thesimulation result suggested that reducing the window opening area and increasing thenumber of window numbers could strengthen the indoor ventilation effect and that thecourtyard has strong wind-sucking effect under wind-pressure ventilation whilewind-raising effect under heat-pressure ventilation.Finally, by the study of natural ventilation in mentioned regions, the ventilationlaw was concluded, including the effect of pressure difference of window holes onventilation and Venturi effect of double pitch roof Stack effect of Patio. |
