Energy Analysis of Omotosho Phase 1 Gas Thermal Power Plant

Many managers of electrical generating utilities are striving to improve the efficiency, heat rate and performance of their existing thermal power stations. The thermal performance of the plant has to be investigated to achieve this aim. This paper describes the use of energy analysis in evaluating the performance of Omotosho Phase I Gas Thermal Power Plant. The data used were obtained from data record book and discussions with personnel during visit to the plant. The efficiency of plant was calculated at various load levels and ambient temperature. The average overall efficiency of the units was found to be 30.28% at ambient temperature range of 21 - 330C and power output of 30.11 – 39.80 MW. This shows that power output and overall efficiency decreases as ambient temperature increases and 66.98% of fuel input is heat lost through the flue gases to the environment was the largest source of energy loss in the turbine units. Based on the results obtained compressor air intake cooling and combined cycle systems are recommend to optimize thermal performance of the plant.