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利用数值计算方法对建筑物南墙在太阳辐射作用下的传热过程进行模拟计算,分析了室外温度和不同保温形式时,连续日照天数对南墙传热过程和太阳能吸收效果的影响。研究结果表明:连续晴朗天数较长时,内、外保温南墙太阳辐射净得热量近似相等;但连续晴朗天数较短时,内保温南墙太阳辐射净得热量比外保温情况高30%~80%。室外气温越低,连续晴天数越短,内保温方式的节能优势越明显。
Numerical simulation is used to simulate the heat transfer process of the south wall of a building under the action of solar radiation. The effect of continuous sunshine days on the heat transfer and solar energy absorption of the south wall is analyzed when outdoor temperature and different forms of insulation are used. The results show that when the number of consecutive sunny days is longer, the net heat gain of the solar radiation on the south wall of inner and outer thermal insulation is approximately equal, but when the number of consecutive sunny days is short, the net heat gain of solar radiation on the south wall of inner thermal insulation is 30% 80%. The lower the outdoor temperature, the shorter the number of consecutive sunny days, the more obvious the energy-saving advantages of the internal insulation mode.