A 1,000,000 BTU burner; even a dragon would be jealous.

Wednesday, November 3rd, 2010

The main roaster burner is here and the valve train is being constructed, it will be ready by next week. This burner has an upper range of 1,000,000 BTUs, but of course that is something that it will never have to do. The supplier of these burners offers a smaller version but its maximum input is 500,000 BTUs and that is not enough for this 75 lb roaster. This burner has an excellent turndown ratio, so the extra BTU potential of this burner will not affect our process at all. This burner was chosen because it was specifically designed for air heating, meaning it is configured for maximum efficiency under the conditions that exist in a wide range airflow situation, in our case the flow in the combustion chamber. The burner’s ability to operate under a wide range of flow conditions is important to us because of our ability to turn the flow rate of our blower up and down, if we had a burner that was not designed for this application it could leave us with incomplete combustion of the natural gas, which clearly wouldn’t work. I am excited to see this burner up and running on our machine, it is going to make the roaster very efficient and leave the coffee with a clean taste without imparting any foreign flavors to it.

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