Optimization of a building equipped with double skin façade, phase change materials, green roof, and photovoltaic with evaluation of their economic and environmental aspects
Subject Areas : Renewable Energysobhan izadpanah 1 , Farivar fazelpour 2 , Mohammad eftekhari yazdi 3
1 - Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
2 - Department of Energy Systems Engineering, Faculty of Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran. * (Corresponding Author)
3 - Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
Keywords: Energy Optimazation, Double Skin Façade, Phase Change Material, Green Roof, Photovoltaics. ,
Abstract :
Background and Objective: Considering the importance and necessity of energy saving in Iran, different methods have been introduced and examined in order to achieve this goal in the building section. simultaneous use of photovoltaic panels, green roofs, phase-change materials and double-skin facades, can lead to almost 70% Energy saving. considering this fact, it is important to optimize the use of the above technologies, with analyzing their economic and environmental aspects.
Material and Methodology: In this research, the optimization of PCM types and PCM location in external wall and green roof layers, with the objective of cooling and heating load reduction, for the first time in a building equipped with the aforementioned technologies, was carried out using the genetic algorithm. Three climate condition of Iran consist of Hot arid (steppe-dry mid-latitude and Desert biome-dry tropical) and mild-humid climate was selected. The study was conducted using Design Builder software version 6.1.5.2.
Findings: As a result, 9, 9 and 6 optimal solutions were calculated for Tehran with steppe-dry mid-latitude climate, Yazd with Desert biome-dry tropical climates, and Amol with mild-humid climate respectively. The highest amount of energy saving of 70.9% has been achieved for mild-humid climate.
Discussion and Conclusion: Considering the economic analysis and environmental effects, two following solutions are suggested 1- using RT31 PCM between brick and plaster layers of external wall of the building located in steppe-dry mid-latitude climate 2- using, RT26 Between brick and plaster layers of external wall of the building in desert biome-dry tropical climate.
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