Thank you ccfowler for taking the time to write such an insightful and informative reply!
I had not thought about checking the physical properties of the orifices. This will definitely be on my checklist once the kiln is run down for maintenance. The possibility exists, that the weird values I...
Thanks for the much appreciated replies!
davefitz: I have measured both the air and fuel gas differential pressures over all the orifices. I have calculated the volumetric air flow for each burner, and I am waiting for an upgraded diagram for the natural gas orifices (they seem to be...
I'm working as an intern at a factory that produces refractory bricks, mainly doing measurements on a tunnel kiln they use for firing the bricks. The bricks are heated with several natural gas burners in a firing zone. To determine the required air for both stoichiometric and excess-air burning...