I have a stack heater that has a burner set for:
natural gas supply pressure = 7"w.c.
manifold supply pressure = 3"w.c.
exhaust gas temperature = 900 C
I am trying to estimate/calculate the amount of natural gas being consumed CFM??? The air CFM is 62. The temperature controller measures the exhaust gas temperature and controls (open/close) the natural gas solenoid valve to maintain the exhaust gas temperature to around 900 C. Any idea how to estimate/calculate the natural gas usage?? other than buying a meter and read the values on a typical 24hrs. basis...