Abstract
The generation of electric power is presently dominated by gas turbine (GT) power plants in Nigeria, as is the drift globally. This is due to gas turbine low carbon footprint, high power to weight ratio, and high efficient energy utilization in combined cycle configuration. The gas turbine operates off-design on leaving the manufacturer’s shelf. The information on gas turbine performance is relevant for the effective operation and maintenance of these plants. Design focus and performance off-design of the GE LM2500 turbine established in Cranfield University, UK, was undertaken to assess the effect of the imposed ambient situation on the GT routine factors such as power output, fuel flow, and mass flow. The results obtained indicate that the accessible GT power and efficiency are vastly penalized by an adverse ambient condition in addition to other factors relative to its design point. Such conditions are predominant in the tropics where Nigeria falls, with the obvious consequence that the user must give careful thought to site-specific operating conditions before the procurement.
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