Energy Auditing and Conservation in Cement Plant (Case Study: Diredawa National Cement Plc)
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Date
2021-03
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Addis Ababa University
Abstract
The cement production method has been extremely energy and price-intensive. To attain an actual
and well-organized energy handling system, electrical and thermal energy review investigation
was active on the cement plant. The cement plant requires 4,473.06 hours per year of the total
operating hours to produce 587,375.67 tons of clinker.
The factories have the problem of proper utilization of energy, due to lack of proper replacement,
regular maintenance, and control efficiency of most industrial equipment and processing is lower
than the expected. This study focuses on energy audit and conservations in an exceedingly national
cement plant that has been victimization knowledge collected from the cement plant, an in-depth
assessment has been taken on energy using and loss. Due to these losses, Energy efficacy
evaluations of the most energy-intensive equipment such as electrical motors and drives, lamps
have been done. Additionally establish technological opportunities to decrease the energy
consumption of the plant, increase productivity, and improve the assembly method. Specializing
in energy consumption reduction efforts through method improvement, production management,
and introducing new technologies achieved vital results.
By replacing the more efficient lamps (from T-12 to T-8 lamps) 92.52 MWh/year energy is
conserved and saves 1713.33 Dollars/year. Motor Master international is used to choice good
electric motor in form of efficacy, price-efficacy & energy conserving possible. Consequently,
Motor Master + international software, 240.222 MWh/year energy is conserved and saves 13,223
Dollars/year. The Energy-efficient cement factory were nominated as a standard to compare their
difference in electrical and fuel energy intensity (19.5 kWh/t and 779.4 KJ/Kg) and pays additional
payments of 1, 1042,314.0974 Dollars per year.
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Keywords
Cement Industry, Energy Audit, Energy Efficiency, Clinker, Energy Consumption, Payback Period