Gas Generator Efficiency Calculation

Electrical efficiency values assume a generator efficiency of 94 at 0 8pf.

Gas generator efficiency calculation.

Figure 2 shows efficiency curves for plants operating at summer ambient conditions of 25ºc 77ºf. 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. 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. Thus the decrease in powers and thermal efficiencies are observed as shown in fig.

Can be used for permanent and peak power electric plants. Download excel calculator for electric generator. Ignore the losses in the ducting gear box and 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.

For every 100 units of energy input 40 units are delivered as output. Example of consumption per kwh consumption of a diesel generator at 75 of nominal power. 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. 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. 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. Fuel consumption is presented in accordance with iso 3046 1 with a tolerance of 0 5 at maximum rating.