Daylight Contribution on Energy Consumption in Government Office Building in Indonesia

Ekasiwi, Sri Nastiti N. and Antaryama, I Gusti Ngurah and Hatifah, Hatifah and Aini, Qurrotul (2014) Daylight Contribution on Energy Consumption in Government Office Building in Indonesia. In: International Conference on 15th Sustainable Environmental Architecture. 2nd Asian Vernacular Architecture Networks, 14-15 November 2014, Hasanuddin University Faculty of Engineering New Campus, Makasar.

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The considered Rectorate Building of Institute Teknologi Sepuluh Nopember (ITS) is threestorey-building. It has square shape with an atrium, and arrangement of offices at the perimeter. Wide openings are equipped with long shading device. With those characteristics, it expected that the building consume less lighting energy. In the preliminary observation it is found that the lighting condition is as the opposite. Using blind and turn on the electric light during daytime are apparent in its daily office activity. It may lead to higher energy consumption. This paper presents simulation results of daylighting performance by applying existing design aspects. Lighting energy consumption is evaluated based on obtaining daylighting condition. Based on the area which partially supported by daylight, we evaluate the lighting energy concerning typical office hours of 8:00 -16:00 (8 hours operation). Results show that lighting energy performance of the ITS Rectorate building is 1.47 kWh/m2/month. Assuming the lighting energy is 25% of total electricity load, the value indicates energy consumption which meets the national standard of energy efficiency (4.17-7.92 kWh/m2/month). The resulted electricity consumption indicates that the building configuration with atrium contributes daylight performance. It provides rooms supported by daylight from both inner and outer perimeter. Even the simulation of daylight performance shows only 39.7% floor area which meet visual comfort requirement, the energy performance conform the national standard for lighting energy efficiency. This means the building design can perform good lighting energy

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: energy, lighting performance, government office building, Indonesia
Subjects: N Fine Arts > NA Architecture
T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting.
Divisions: Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Architecture
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 28 Mar 2023 01:42
Last Modified: 28 Mar 2023 02:34

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