Typically, crude oil production in Nigeria always accompanied by surface production of associated gas. With little associated gas recovery facilities in place, majority of associated gas is continuously flared with few portions re-injected into the reservoir for enhance oil recovery (EOR). In addition to environmental hazards, wasting substantial amount of produced associated gas is deemed detrimental to a country currently generating less than 54% of its electric power requirement. Onsite power generation as one of the many means of utilization of associated gas has been conceived. Conversely, the availability and performance of the gas turbine engine for onsite associated gas utilization requires evaluation owing to variations in associated natural gas composition globally and the dependency of associated gas production on reservoirs and oil production activities. This paper presents an analytical investigation of gas turbine engine inspired by GE LMS100 frame engine for onsite utilization of associated gas in Nigeria. Gas turbine performance results are presented and performance parameters are compared against typical commercial natural gas grade.
In this paper, the wind data for Plateau North Central Nigeria was collected at 10m height for seven years (2000-2006) at meteorological station Abuja. The assessment for the site is gaining importance for the installation of an appropriate wind turbine at the location. The highest wind speed for this location was found to be 15.4m/s in January and the lowest wind speed is 8.7m/s in August within the period of years considered. The study was carried out using the Weibull parameters scale (c m/s) and shape (k) factors and result obtained for these parameters have an average value of 10.76m/s and 7.47 respectively. These values indicate that the wind would be useful for power generation over a longer period. The power density for this location varies between 368 and 1056W/m 2 , this also shows that Plateau is a good location for wind power generation.
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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