Energy efficiency analysis of mechanical and electrical systems in industrial buildings

Juan Fredion; Bagas

Authors

Juan Fredion Institut Teknologi Padang, Padang, Indonesia Author
Bagas Institut Teknologi Padang, Padang, Indonesia Author

Keywords:

Energy efficiency, Industrial buildings, Mechanical systems, Power consumption, Sustainability

Abstract

Industrial buildings consume significant amounts of energy through both mechanical and electrical systems, making energy efficiency a critical factor in reducing operational costs and environmental impacts. This study analyzes the energy efficiency of mechanical and electrical systems in selected industrial buildings, focusing on identifying inefficiencies, quantifying energy losses, and evaluating improvement opportunities. Data were collected through direct field measurements, system performance monitoring, and analysis of historical energy consumption records. The mechanical systems assessed included heating, ventilation, and air conditioning (HVAC), compressed air systems, and industrial process equipment, while the electrical systems covered lighting, power distribution networks, and motor-driven machinery. Energy performance indicators (EPIs) and benchmarking methods were applied to determine the efficiency levels relative to industry standards. The results indicate that HVAC systems and outdated motor equipment contribute most significantly to inefficiencies, accounting for up to 35% of total avoidable energy losses. Implementation of high-efficiency motors, variable frequency drives (VFDs), LED lighting retrofits, and optimized control strategies for HVAC systems showed potential energy savings of 20–30% annually. The findings highlight that integrating real-time monitoring systems and preventive maintenance programs can further enhance operational efficiency and extend equipment lifespan. This research underscores the importance of a holistic approach to energy management in industrial buildings, combining technological upgrades, operational optimization, and continuous performance evaluation to achieve sustainable energy efficiency improvements

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