Energy audit and retrofit of lighting system at Institut Latihan Perindustrian (ILP) Tangkak, Johor

Abstract

The global electricity consumption demand grows at 2.1% per year from 2018 to 2040. Historically, the growth of Malaysia demand from 2015 to 2020 is 16,822MW to 18,808MW, or at 2.3% annually. Nowadays, people are more concerned about energy efficiency and conservation in buildings. The government needs to ensure that energy is used at high efficiency and reduce waste. Since the commencement of operations, Institut Latihan Perindustrian (ILP) Tangkak has never conducted an energy audit. At present, energy audit is one of the effective approaches to identify efficient energy usages and cost saving. The purpose of this research is to conduct an energy audit in terms of study on the power and illuminance level for lighting, propose energy efficiency strategy of lighting system and to evaluate the proposed strategy in terms of techno-economic performance. This research presents the study of energy audit that will be conduct to analyze the lighting energy consumption pattern in library building at ILP Tangkak. Preliminary audit which involves a brief review of utility and building operation, observation and a walkthrough energy audit is performed as an input data for the baseline data. Real time data such as power rating, illuminance level and usage time will be collected. Existing lighting system which is T8 fluorescent tubes considered to examine the performance of the alternative efficient in terms of illuminance performance and energy performance of the proposed T8 and T5 Light Emitting Diode (LED) retrofit. Retrofitting of lighting on Library using DIALux software will be use to simulate in accordance to the MS1525 standard. Economic analysis including Payback Period (PP), Life Cycle Cost (LCC) and Annual Life Cycle Cost (ALCC) are indicators of economic performance that will be used. Energy Saving using T5 LED saves 11.5% more than T8 LED. The T8 LED technology shows lower PP and LCC value compared to T5. According to the ALCC, T5 LED technology shows lower value compared to T8 LED technology.