Gas Generator Efficiency Calculation

Ignore the losses in the ducting gear box and generator.

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. Figure 2 shows efficiency curves for plants operating at summer ambient conditions of 25ºc 77ºf. Diesel generators are able to reach an efficiency of about 40 in the engine speed range of idle to about 1 800 rpm. 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.

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. Can be used for permanent and peak power electric plants. Fuel consumption is presented in accordance with iso 3046 1 with a tolerance of 0 5 at maximum rating. Fuel flow calculation based on fuel with 900btu scf lhv and fuel consumption with a tolerance of 0 5.

For every 100 units of energy input 40 units are delivered as output. 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. 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.

Thus the decrease in powers and thermal efficiencies are observed as shown in fig. 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. Example of consumption per kwh consumption of a diesel generator at 75 of nominal power.