Gas Generator Efficiency Calculation

13 31 where the trends in power and thermal efficiency due to hot end damage in the gas generator turbine are illustrated.

Gas generator efficiency calculation. Download excel calculator for electric generator. Generator energy conversion efficiency η gen 0 985 per unit fuel lhv for hydrocarbon natural gas 37 50 mj kg fuel air ratio by mass 0 01 per unit f 2 basic requirements assume constant specific heat c p c pc andγ γ c. This chart approximates the fuel consumption of a natural gas generator based on the size of the generator and the load at which the generator is operating at. The decreases in compressor pressure ratio gas generator turbine efficiency and the cycle temperature ratio t 3 t 1 result in a decrease in the thermal efficiency.

Fuel consumption is presented in accordance with iso 3046 1 with a tolerance of 0 5 at maximum rating. Electrical efficiency values assume a generator efficiency of 94 at 0 8pf. Thus the decrease in powers and thermal efficiencies are observed as shown in fig. Fuel flow calculation based on fuel with 900btu scf lhv and fuel consumption with a tolerance of 0 5.

Ignore the losses in the ducting gear box and generator. This excel file will help you to calculate power and electricity production according to load fuel consumption and cost of kwh from diesel or gas generator. Diesel generators are able to reach an efficiency of about 40 in the engine speed range of idle to about 1 800 rpm. Example of consumption per kwh consumption of a diesel generator at 75 of nominal power.

Can be used for permanent and peak power electric plants. Please note that this table is intended to be used as an estimate of how much fuel a generator uses during operation and is not an exact representation due to various factors that can increase or decrease the amount of fuel consumed. This assumes a 1x1 ccgt configuration one gas turbine and heat recovery steam generator supplying one steam turbine air cooled condensers and a bypass stack to isolate the steam generating portion of the plant from the gas turbine.