The measurements for the short-wave solar reflectivity of a Reflective Coating Material (RCM) with various cleaning operations that were obtained in a previous study were used in this study to conduct numerical simulations in order to assess the moisture and energy performance of cool and black roofs when they were subjected to the weather conditions of Saudi Eastern Province and Kuwait City. The results of the numerical simulations showed that black roofs always work with less moisture than cool roofs. Because the highest relative humidity in the different components of the black and cool roofs was well below 80%, there was no risk of condensation and mold growth in these roofs. For both weather conditions of Saudi Eastern Province and Kuwait City, the results showed that installing cool roofs have resulted in increasing the heating energy loads in relation to black roofs. Conversely, the results showed that the decrease in the cooling energy loads due to installing cool roofs were typically much greater than the increase in the heating energy loads. As such, cool roofs have resulted in net energy savings in relation to black roofs. Replacing black roof by cool roof in Saudi climate, the results showed that the annual energy savings in the total energy load was 25% and 34% as a result of installing cool roof with RCM at no cleaning and weekly homemade cleaning, respectively. Additionally, replacing black roof by cool roof in Kuwaiti climate, the results showed that the annual energy savings in the total energy load was 23% and 31% a result of installing cool roof with RCM at no cleaning and weekly homemade cleaning, respectively.

在本研究中，使用了先前研究中获得的具有各种清洁操作的反射涂层材料（RCM）的短波太阳反射率的测量值，以进行数值模拟，以评估冷，黑色的湿气和能量性能。屋顶在遭受沙特东部省和科威特市的天气条件时。数值模拟的结果表明，与凉爽的屋顶相比，黑色的屋顶总是在较少的水分下工作。由于黑色和凉爽屋顶的不同组件中的最高相对湿度远低于80％，因此在这些屋顶中没有凝结和霉菌生长的风险。对于沙特东部省和科威特市的天气情况，结果表明，相对于黑色屋顶，安装凉爽的屋顶导致增加的热能负荷。相反，结果表明，由于安装了凉爽的屋顶而导致的冷却能量负荷的下降通常远大于加热能量负荷的上升。因此，与黑色屋顶相比，凉爽的屋顶已节省了净能源。结果表明，在沙特气候中用凉爽的屋顶代替黑色的屋顶，结果表明，通过在不清洁的情况下安装带有RCM的凉爽的屋顶，以及每周进行自制清洁，每年在总能源负荷中节省的能源分别为25％和34％。此外，在科威特气候下，用凉爽的屋顶代替黑色的屋顶，