Hello. Thank you for paying attention.
What is the typical values of excess air in natural gas power plants? Is 100% excess air an appropriate value for natural gas (methane) ? When I modeled the power plant the time I set excess air about 100% true range for the turbine inlet air temperature was obtained (around 1300-1400 K).
Anthracite 40
Coke oven gas 5 - 10
Natural Gas 5 - 10
Coal, pulverized 15 - 20
Coal, stoker 20 - 30
Oil (No. 2 and No. 6) 10 to 20
Semi anthracite, hand firing 70 to 100
Semi anthracite, with stoker 40 to 70
Semi anthracite, with traveling grate 30 to 60
Thank you dear Santhosh Prabhu, but are you sure? (Only 5-10% even in natural gas power plant?)
Santhosh Prabhu thank you again (may you tell me what is the reference for values?), but I want to sure what is the correct range, because it influence on my results significantly.
We're looking for to more answers :)
Air excess after furnace in traditional boilers 1.1 (maybe 1.05) for natural gas.
Air excess in exhaust gases in traditional boilers is from 1.1+0.25=1.35 (project value for gas tide boiler) till 1.35-1.5 (for old boilers) for natural gas.
You can find air excess project values in
N.V. Kuznetsov, V.V. Mitor, I.E. Dubovsky, E.S. Karasina, M.M. Rubin, A.G. Bloh, U.L. Marshak, R.A. Petrosan, V.A. Lokhin, S.I. Mochan, P.N. Kendys, Thermal design of boiler units (a Standard method) N.V. Kuznetsov (Ed.), Energy, Moscow 1973 (in Russian).
Ali Sohani did you find any reference for the 10% excess air thing?
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