Abstract
The industrial sector uses a great portion of energy resources, much of which is wasted due to variety of inefficiencies and poor practices. Effective utilization of energy use in this sector can reduce greatly the energy cost and environmental impacts. Despite these benefits, energy-saving opportunities in the food processing industrial subsector in Nigeria have remained a mirage over the years due to lack of interest at addressing issues relating to energy efficiency and management. In this study, comprehensive review of energy use and energy-saving potentials in food processing industries has been carried out. The study reviewed various patterns of energy consumption; it identified the sources of energy wastage, and suggested possible energy-saving techniques that could be employed to reduce energy waste in the food industries. Results of this study revealed that the source of electrical energy in the food industries is mainly from generating set; this is due to the poor state of infrastructures in the power sector. The major factors that lead to energy waste in the industries are waste energy in boiler plant, use of second hand and aging equipment, lack of maintenance culture, among others. This study concluded that adopting efficient energy-saving technologies can result in savings of 10%–30% below the current average costs in the industries. The possible and effective energy-saving technologies are discussed in this chapter.
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