Your fuel gas consumption information should be available in your specific gas turbine "Installation and Operating Manual"
For a small combined cycle plant, your fuel consumption will be about 7500-8500 BTU/kW generated. (You will have to calculate this based on the equipment that you select)
10 MWe is a very, very small plant..... which gas/steam turbine models are you trying to use ?
Wouldn't a diesel/IC engine plant configuration be much more appropriate in this size range ?
About 290 m3/hr to 300 m3/hr natural gas 8500 kcal heating value per MW = 3000 m3/hr per 10 MW. Approximately 4 Tph steam/MW (depending on the design) via Waste Heat Boiler = 40 Tph steam at 10 bar . Est 85 m3/hr gas saving/Ton steam generated = 3400 m3/hr gas saved x Rate/m3/hr gas = Est. Total saving.
Best answer I can give on a 1.5 line question that involves over US$ 5.0 million of a 1o MW Project of Combined Cycle. However, this will not be within your technicalities to handle and requires a Consultant.
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