Gas Generator Efficiency Calculation

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.

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. Ignore the losses in the ducting gear box and generator. 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. Diesel generators are able to reach an efficiency of about 40 in the engine speed range of idle to about 1 800 rpm.

Fuel flow calculation based on fuel with 900btu scf lhv and fuel consumption with a tolerance of 0 5. Download excel calculator for electric generator. In the paper a calculation methodology of isentropic efficiency of a compressor and turbine in a gas turbine installation on the basis of polytropic efficiency characteristics is presented. 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.

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. 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. 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.

Can be used for permanent and peak power electric plants. Figure 2 shows efficiency curves for plants operating at summer ambient conditions of 25ºc 77ºf. For every 100 units of energy input 40 units are delivered as output.