Assessment of the Intermediate Cavity Impact on the Cooling Energy Performance of the Multi-Story Double-Skin Facade in Hot and Humid Climate (Kish Island)

The majority of the energy exchanges in buildings are dependent on or at least related to the exterior skin of the building. The exterior skins are the localities of the building’s heat exchange with the peripheral environment, solar energy absorption, ventilation, and light and sound infiltration to the interior environment. These spots play an important role in energy savings in buildings. The double-skin facades have been considered a solution to create transparency, control the effect of the environment on the building, and its useful performance in terms of climatic consistency and energy consumption. Given the heat pileup problems stemming from the greenhouse effect of the intermediate cavity, especially in hot and humid climates; it was deemed necessary to carry out a study to figure out the optimum clearance between two skins to reduce energy consumption. The present study is conducted using information collection, simulation of case study with Design builder software, and analysis of the quantitative data obtained from the simulation of the studied buildings in the hot and humid climate of Kish Island. The multi-story DSF is simulated at various distances between the two skins to investigate the amount of cooling energy consumption. The research findings show the amount of cooling energy used at cavity intervals of 30 to 200 centimeters. The research theoretical foundation is laid on the idea that the southern front of the multi-story DSF, compared to the various types of DSF, has a considerable effect on the optimum conditions of the reduction in energy consumption. The results of this study indicate that the cavity depth plays an important role in the reduction of cooling energy, and a double skin facade with the depth of 50 to 70 centimeters is the optimum distance in reducing cooling energy consumption, compared to other intervals in the low-rise office building in the hot and humid climate