Finite element analysis to enhance the efficiency of the secondary roof of double skin roofs (DSRs)

The significant side effect of rapid urbanization in developing cities is urban heat island (UHI), resulting in elevated ambient air temperatures. This causes a further increase in the indoor air temperature of a build-ing bringing thermal discomfort to the inhabitants. It is a well-established fact that the significant electric consumption in buildings creates thermal comfort conditions for the inhabitants. Cool roofs are one of the promising passive technologies to curb the entry of heat flux into the buildings through ceilings, and a double skin roof (DSR) is a cool roof technique in which an air channel inhibits the heat flux entry. This paper presents an opinion to increase the efficiency of the secondary roof of a DSR by providing per-forations and fins (extended surfaces) to it by way of a simulation using Ansys software, a finite element analysis software, and incorporating constant peak ambient boundary conditions on the roof for five hours to obtain the temperature distribution. The simulated results show that such a secondary roof design is 16.43 % more efficient in decreasing the temperature at its lower surface than the conventional one.Copyright (c) 2022 Elsevier Ltd. All rights reserved.Selection and peer-review under responsibility of the scientific committee of 2022 International Confer-ence on Recent Advances in Engineering Materials.