Our raw materials are natural gas and filtered atmospheric air.
Transcorp Ughelli Power gets supply of natural gas from Nigerian Petroleum Development Company (NPDC) for Delta II & III at a gas pressure of 21 – 22bars and Nigeria Gas Company (NGC) for Delta IV at a gas pressure of 19 – 21bars, but both SPDC and NGC can compliment each other in times of emergency through a tripartite gas line valve.
The other major raw material is the atmospheric air that is filtered and compressed. Part of the air is used for cooling and atomization of the diesel fuel (where need be) for combustion during operation.
Compressed air combustion with natural gas and hydrogen to cool the generators
Most part of the compressed air is used for the combustion in the combustion chambers, with the natural gas. Hydrogen is used in cooling the heavy generators at Delta IV because of the enormous heat that the generator windings emit. Hydrogen cools ten times better than air, hence its preference for air despite its high inflammability.
The hydrogen is generated locally, from the electrolysis of water. Lube oil or lubricant oil is used in the gas turbine station for lubrication of the bearings, for hydraulic pressure and heat extraction.