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Gas engine backfire

Gas engine backfire

Gas engine backfire

(OP)
Hello everyone.
Is there an easy way to calculate 22" exhaust pipe internal pressure caused by a backfire after the turbo?
Let's say the fuel is digester gas with 60% methane.
The system is a gas engine/generator set rated 2100 KW.

Thanks in advance!

RE: Gas engine backfire

1952Mike-
 


        I would decide how much fuel I want to assume is in the pipe.  The most conservative assumption is that the air-fuel ratio in the exhaust system is the same as it is in the intake.


        Then I would assume that all the fuel in the pipe burns at constant volume.   Use the ideal gas law to calculate the final pressure.

    Since volume is assumed to be constant, & the ideal gas law is assumed,  then  P/T  is the same both before and after the fuel burns.



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