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城市化产生热岛效应。利用CTTC(建筑群热常数 )模型对城市化后的建筑群温度进行模拟计算 ,把计算结果作为室外计算温度 ,对一普通住宅建筑空调负荷进行了计算 ,并与根据气象台提供的室外温度计算出来的冷热负荷进行比较。结果表明 ,夏季冷负荷受城市化影响较大 ,当无室内发热量时 ,采用气象台提供的气象参数计算出的夏季冷负荷比按小区温度计算的低 1 0 %～ 35 % ;而冬季热负荷受城市化影响不大 ,二者差别不到 1 0 %。
Urbanization generates heat island effect. Based on CTTC model, the temperature of the urbanized buildings is simulated and calculated as the outdoor calculation temperature. The air conditioning load of an ordinary residential building is calculated and calculated according to the outdoor temperature provided by the weather station The hot and cold loads are compared. The results show that the summer cooling load is greatly affected by the urbanization. When there is no indoor heating, the summer cooling load calculated by meteorological parameters provided by the meteorological station is 10% -35% lower than that calculated by the district temperature. The winter heat load Little affected by urbanization, the difference between the two is less than 10%.