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秦砖汉瓦式的中国建筑结构,黑瓦是导致顶层房间温度冬冷夏热的主要因素。以南京为例,位于北纬32度,东经119度,全年太阳辐射总量5.024MJ/m~2。每年7～8月平均日辐射强度,1m~2相当700w电炉的能量照射到屋面。黑瓦吸收太阳辐射能量,并传导到顶层房内,提高房间的温度。寒冬房内,温度大于室外温度,使房内的热量通过黑瓦辐射到室外,使室温降低。如使用反射隔热涂料,涂刷在屋面的黑瓦、石棉瓦和水泥隔热板上,使屋面吸收太阳辐射系数
The Chinese brick structure of the brick brick-tile structure in the Qin Dynasty was the main factor that caused the temperature of the top room to be cold in winter and hot in summer. Taking Nanjing as an example, it is located at 32 degrees north latitude and 119 degrees east longitude. The annual total solar radiation is 5.024 MJ/m2. Every year from July to August, the average daily radiation intensity is 1m~2 and the power of a 700w electric furnace reaches the roof. The black tiles absorb the solar radiation energy and transmit it to the top floor to increase the room temperature. In the cold winter room, the temperature is greater than the outdoor temperature, so that the heat in the room is radiated to the outside through the black tiles, so that the room temperature decreases. If reflective insulation coating is used, apply black roof tile, asbestos tile and cement insulation board to roof to absorb solar radiation coefficient