<p>Façade as the most outer part of building has very important role in building’s energy exchange and its thermal comfort.</p><p>Using of ventilated facade have been increased due to its positive points, including aesthetics, energy saving and sustainable approach so it is important to study its compatible in different climate conditions. In the present study to evaluate the effectiveness of this technology in Iran’s climate compared to conventional systems as well as the effect of other factors in improving its performance, five models of a building with different situations have been modeled in Design Builder software and samples were examined in terms of the amount of energy needed to achieve comfort conditions. The result was that buildings with ventilation facades use 40% less energy than the building with conventional facade system. Its effectiveness in improving the cooling performance is better than its performance in the heat and its performance in the southern facade and areas that are exposed to direct sunlight looks much better. Factors such as the effect of height and number of floors also have an impact on system performance.</p>
This article describes a parametric research simulated different louver conditions performance under given climate. The DIVA (Design, Iterate, Validate and Adapt) plug-in for Rhinoceros/Grasshopper software is used as the main tool, given its ability to effectively calculate daylight metrics (using the Radiance/Daysim engine) and energy consumption (using the EnergyPlus engine). The optimization process is carried out parametrically controlling the shadings' geometries. Genetic Algorithms (GA) embedded in the evolutionary solver Octopus is adopted in order to achieve close to optimum results by controlling iteration parameters. The results of the paper show that there are meaningful optimum parameters which may help for better thermal performance through louvers in hot and dry climate of Tehran. The results indicate impressive efficiency in building industry in contemporary architecture of developing countries especially in Iran and west of Asia.
Optimum usage of daylight plays a an importatnt role in high-performance architecture and planning. Innovative daylighting systems in contemporary buildings can produce various benefits such as maximizing daylight penetration, optimizing visual comfort and reducing energy consumption. This paper is to develop a new louver-driving mechanism to optimize adoption of daylight in deep-plan building in order to meet requirements of high-performance architecture. Methodology of the paper emphasize on a experimental and quasiexperimental approach for examination of different types of louver-driving mechanism. The greater city of Tehran adopted as case study of the paper. The main goal is based on searching standards to better louver design in order to optimize energy demands by using this shading device. Thus 45 different cases with different louver width and angles and different louvers' distance from façade were chosen to analysis.Visual comfort and energy efficiency are analysed in an integrated approach. Moreover the combination of daylight and energy performances has always been an issue, as different software packages are needed to perform detailed calculations. A simplified method to overcome both issues using recent advances in software integration is explored here. All daylight, thermal and glare analysis were done in DIVA plug-in for Rhinoceros/Grasshopper which has ability to effectively calculate daylight metrics (using the Radiance/Daysim engine) and energy consumption (using the EnergyPlus engine). It can be concluded from experiments that generally, the various size of the louvers were not much different from each other and custom sizes can be selected according to the plan but any alteration in louver's angle and distance from façade were followed by changes in lighting and thermal load of room. In the case of the using fixed louver in design in Tehran's climate, distance between 0 and 13 centimeters and angle between 22.5 to 45 degrees are introduced as the optimum mode.Keywords: optimization, louver-driving mechanism, high-performance architecture, energy efficient architecture, innovative daylighting system, deep-plan building. SENTEZ VE OPTİMİZASYON DERİN PLAN BİNASI YENİLİKÇİ GÜN IŞIĞI SİSTEMİ MEKANİZMASI PANJUR-SÜRÜŞ ÖZGün ışığının optimum kullanımı yüksek performanslı mimari ve planlama bir bir importatnt rol oynar. çağdaş binalarda Yenilikçi günışığı sistemleri gibi, gün ışığı en iyi seviyeye görsel konfor optimize ve enerji tüketimini azaltarak gibi çeşitli faydalar üretebilir. Bu yazıda, yüksek performanslı mimari gereksinimlerini karşılamak amacıyla derin plan binada gün ışığı kabulünü optimize etmek için yeni bir
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