Development of Energy Audit Software For Lighting Systems

Ahmad Farid, Sapar (2012) Development of Energy Audit Software For Lighting Systems. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Electricity energy is very important in human life, but much of the energy content of the available energy source is wasted by inefficiencies in the energy conservation and distribution processes. Building’s energy-use accounted for the largest share of the final energy use by the commercial and residential sector. Air conditioners are shown to be the major energy users (57%) in office buildings, followed by lighting (19%), lifts and pumps (18%) and other equipment (6%). So, the energy audit is a useful method to preliminary estimate the saving potential of each building. Thus, this project conducts office building audits. Federal Tower of Melaka is used as the case study building and this project focuses on lighting systems. Initially, the pattern of existing lighting systems used in the Federal Tower of Melaka been analyzed in term of total power, energy consumption, electricity bill payment per month and illuminance level on each area. Next, five methods are proposed in this project by using new technology, namely, by installing sensor (motion sensor and infrared sensor), by replacing existing T8 fluorescent lamp with T5 Retrofit sensor, combination T5 Retrofit Saver and sensor, by replacing existing lighting systems with LED T8 and lastly combination with LED T8 and sensor. Analyses in term of its effect on energy consumption and electricity bill payment have been carried out. The total cost, annual profit and payback period for each method were also studied. This project also develops simple user-friendly calculator software called “GREEN calculux”. The software can be used to calculate power consumption, energy consumption, electricity bill payment per day, per month and per year. It also includes the recommended lighting systems which contain five methods to reduce energy consumption based on calculation of simple payback period. Then, this software can check the illuminance level standard on each area based on guidelines on energy efficiency in buildings through the MS 1525:2007- Code of practice on energy efficiency and use of renewable energy for non-residential buildings by Department of Standards Malaysia[1]. Lastly, this software also can calculate the number of fitting required need to be installed in given specific area.

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