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Influence of environmental factors favorable to the development and proliferation of mold in residential buildings in tropical climates

机译：热带气候中有利于居住建筑霉菌生长和扩散的环境因素的影响

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摘要

Among the possible pathologies in buildings, one of the main occurrences in humid climates is the appearance of mold. The mold growth on envelope inside surfaces is not exclusively due to failure on building execution and waterproofing. Factors such as, the air relative humidity, inside air temperature, and surface condensation, are aspects that could cause the mold emergence. In this context, the present research was carried out in order to understand the influence of the use of thermal insulation and the solar orientation of the walls in the mold growth in naturally ventilated residences. This study is developed in the humid temperate climate (Koppen Cfa) of Florianopolis, Brazil, located in South America. For this, simulations in the EnergyPlus software, version 8.8, were performed. The residence was simulated by varying the use of thermal insulation in external walls: thermal insulation on the internal side of the wall, insulation on the outer side of the wall and wall without insulation. Two solar orientations were adopted, being north and south. Based on the results found, it was observed how the constructive parameters affect the periods of occurrence of ideal conditions for formation and growth of the mold. It was found that when the rooms were facing north, fewer occurrences of long periods satisfying the conditions for the appearance of the mold occurred. It was also observed that the non-use of thermal insulation reduced these occurrences when the performance among construction systems was compared. This effect also occurred due to the increase in air changes in this model.
机译：在建筑物的可能病理中，潮湿气候中最主要的现象之一就是霉菌的出现。信封内表面上的霉菌生长并非仅是由于建筑物执行失败和防水所致。诸如空气相对湿度，内部空气温度和表面凝结之类的因素都是可能导致发霉的方面。在这种情况下，进行本研究是为了了解在自然通风的住宅中，使用隔热材料和壁的太阳方向对霉菌生长的影响。这项研究是在位于南美洲的巴西弗洛里亚诺波利斯的潮湿温带气候（Koppen Cfa）中进行的。为此，在EnergyPlus软件8.8版中进行了仿真。通过改变外墙中的隔热材料的使用来模拟该住宅：墙体内侧的隔热，墙体外侧的隔热和无隔热层的墙。采用了两个太阳方向，即北方和南方。根据发现的结果，观察到构造参数如何影响模具形成和生长的理想条件的发生时间。发现当房间面向北时，满足霉菌外观条件的长时间出现的次数减少。还观察到，在比较建筑系统之间的性能时，不使用隔热材料减少了这些情况。由于此模型中空气变化的增加，也产生了这种效果。

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