An Approach to Energy Management: A Case Study of a Medium Scale Printing Press in Lagos, Nigeria

摘要

This paper investigates Energy Management Opportunities for reducing energy wastes in a medium scale manufacturing industry’s production processes. The energy information on electricity and diesel consumption for the year 2011 was obtained to complement data collected from walk-through and comprehensive audits. An estimated 125,181kWh of electricity and 33,415 litres of diesel representing 32% electricity and 68% diesel costs, which amounts to $44,562.50 were consumed for the period. Energy efficiency and conservation opportunities identified to promote energy savings, cost savings and environmental sustainability are: the replacing of inefficient drive belts on large motors with efficient cog belts, monitoring electrical loads to reduce peak demand, turning off equipment when not in use, replacing inefficient lamps with energy-saving lamps and installing bank of capacitors to increase power factor. The opportunities reveal a net saving of $6,231.18, which is about 14% of the company’s annual energy cost.