对具有低太阳吸收率、高发射率的碱土金属碳酸盐作为炎热地区"晒不热"涂料的热效果作了初步的探索.该材料在炎热地区白天晒不热效果明显.曝晒最大升温比普通热反射涂料低2～3℃;夜间辐射制冷最大降温比普通热反射涂料多降1～2℃;24h的循环实验仍然符合以上效果;价格低廉、来源广泛,适合于炎热地区使用.
It is a preliminary exploration on the thermal effects of alkali metal carbonate as insolating-not-hot materials with low solar absorptance and high emittance in hot climatic regions. This material has a remarkable insolating-not-hot effect in hot climatic regions. Maximum increasing temperature of daytime insolution of this material is 2～3℃ lower than that of heat-reflecting coatings. Relatively decreasing temperature difference of nocturnal radiation cooling of this material is 1～2℃ lower than that of heat-reflecting coatings at night The cycle experiment of 24h is still consistent with the above results, and the price is low, wide resource, which confirm that it can be applied to the buildings in hot climatic regions.
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