Indonesian Journal of Electrical Engineering and Computer Science
Vol 15, No 3: September 2019

Energy efficiency index by considering number of occupants: a study on the lecture rooms in a university building

Noor Ameera Zakaria (Universiti Teknologi Malaysia)
Mohammad Yusri Hassan (Universiti Teknologi Malaysia)
Hayati Abdullah (Universiti Teknologi Malaysia)
Md Pauzi Abdullah (Universiti Teknologi Malaysia)
Faridah Hussin (Universiti Teknologi Malaysia)
Siti Maherah Hussin (Universiti Teknologi Malaysia)
Nur Najihah Abu Bakar (Universiti Malaysia Perlis)



Article Info

Publish Date
01 Sep 2019

Abstract

The building sector is attributed to approximately 40% of the nation’s energy consumption and this accounts for a significant percentage of the nation’s energy consumption. For this reason, energy efficiency in buildings has now become an important subject in the national energy scenario. Energy Efficiency Index (EEI) is one of the energy consumption indicators that is widely used in the building sector for measuring energy performance. This index is generally measured based on the energy used per unit of building floor area. However, this index is not able to directly identify other factors affecting energy usage. This paper suggests an Energy Efficiency Index (EEI) for determining the performance of lecturer rooms in a university building. Unlike the conventional EEI, the proposed EEI determines the room’s energy usage performance by considering the number of occupants. The study was conducted at the Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM) and the results show that the number of occupants significantly influences the energy usage performance of rooms in a university building.

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