Research of Residential Area Ecological Green Roof for Reduce the Heat Efficiency in Taichung

Abstract

The study of empirical research in the field test, the roof by sunlight exposed control area of the roof panels, roof test area, scaffolding pilot area, vegetation area of the facade, radiation heat absorption temperature change monitoring, explore the roof surface heat transfer temperature difference change.In this study, set the empirical plane pilot area planting the groove (long 425cm × width 300cm × Height 20cm ) in the Taichung City Shenkang residential area on the second floor roof, planting the groove bottom up sequence laying frame high-rise, water proof layer, drainage layer,filter layer (non-woven, water-pottery -stone), the medium layer and planting of layer, planting the groove around the hollow brick interval income side to lighten the load; scaffolding pilot area elevated 60cm ,facade vegetation zone.12:00 temperature change, display the extensive green roof indeed can significantly reduce the building's roof floor surface temperature 8.5-14.2°C, 1-5 months of highest temperature can even cooling up to 17.2-26.2°C, thereby regulating the indoor temperature of carbon reduction effect; extensive green roof during the day at noon in winter and spring period can indeed achieve the cooling effectiveness. The temperature change the extensive green roof on 24:00 pm indeed can save the radiant heat energy to raise the roof of the building, the floor surface temperature of 0.4-2.1 °C, thus achieving the effect of insulation; 1-5 months of minimum temperature can even warming up to 1.9-4.1°C; the extensive green roof winter and spring night time can really achieve the insulation effectiveness.