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首页> 外文期刊>Advances in Mechanical Engineering >Study on the Application of Cool Paintings for the Passive Cooling of Existing Buildings in Mediterranean Climates
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Study on the Application of Cool Paintings for the Passive Cooling of Existing Buildings in Mediterranean Climates

机译：关于冷画在地中海气候中现有建筑物的被动冷却中的应用研究

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Building roofs play a very important role in the energy balance of buildings, especially in summer, when they are hit by a rather high solar irradiance. Depending on the type of finishing layer, roofs can absorb a great amount of heat and reach quite high temperatures on their outermost surface, which determines significant room overheating. However, the use of highly reflectivecool materials can help to maintain low outer surface temperatures; this practice may improve indoor thermal comfort and reduce the cooling energy need during the hot season. This technology is currently well known and widely used in the USA, while receiving increasing attention in Europe. In order to investigate the effectiveness of cool roofs as a passive strategy for passive cooling in moderately hot climates, this paper presents the numerical results of a case study based on the dynamic thermal analysis of an existing office building in Catania (southern Italy, Mediterranean area). The results show how the application of a cool paint on the roof can enhance the thermal comfort of the occupants by reducing the operative temperatures of the rooms and to reduce the overall energy needs of the building for space heating and cooling.
机译：建筑物的屋顶在建筑物的能量平衡中起着非常重要的作用，尤其是在夏天，当它们受到相当高的太阳辐射时，屋顶尤其如此。取决于饰面层的类型，屋顶可以吸收大量热量并在最外层表面达到很高的温度，这决定了房间的过热程度。但是，使用高反射率的凉爽材料可以帮助维持较低的外表面温度。这种做法可以提高室内热舒适度，并减少炎热季节的冷却能量需求。该技术目前是众所周知的，并在美国得到广泛使用，同时在欧洲受到越来越多的关注。为了研究凉爽的屋顶作为中度炎热气候下被动冷却的被动策略的有效性，本文提供了基于卡塔尼亚（意大利南部，地中海地区）现有办公楼的动态热分析的案例研究的数值结果。 ）。结果表明，在屋顶上涂冷漆如何通过降低房间的工作温度并减少建筑物用于空间供暖和制冷的整体能源需求来提高居住者的热舒适度。

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