7TH INTERNATIONAL CONGRESS ON TECHNOLOGY - ENGINEERING & SCIENCE - Kuala Lumpur - Malaysia (2019-08-08)

The Dynamic Building Façade to Optimize the Solar Exposure in a Tropical Climate Zone
The building design process has various considerations, including desire owners, space needs, government policy, and also the site and environmental analysis. In order to analyze environmental, climate is one of the most important aspect in building design because each region has a different climate so the treatment is also different. This paper aims to study façade design in the tropical climate to reduce the solar exposure. Koppen has classified climate around the world by temperature and wind humidity, Indonesia is part of a country with a tropical climate [1]. Tropical climate has characteristics like high relative humidity (RH), high rainfall, high radiation, temperature, and low wind speed [2]. Bandung is part of a humid tropical climate, with an average temperature reaches 23.3°C, rainfall reaches 2000mm/year, average wind speed is 1m/s, and average humidity reach 76%. Located in the tropical, long duration of solar exposure is the main factor to gain the heat transfer. Especially on the façade as the largest building surface. Thus, the building orientation as well as façade design plays the significant role on reducing heat gain. As located in the southern side of equator, the northern side of façade will receive the highest amount of solar radiation [3]. The experiment of double-skin façade configurations found its benefit on providing a better indoor thermal comfort in the hot and humid climate [4], [5]. The solar exposure duration simulation uses Sunhours as a sketchup plugin. The dynamic building façade calculated based on the solar duration, by create their balconies as a shadowing. The dynamic building façade then proved able to reduce solar exposure as well as offering the interactive design for the apartment.
Assist. Prof. Beta Paramita, Ms. Citra Clara Mianti, Ms. Sarah Luziani