Hello, I need to design an exhaust system for a forge shop, the forge has 3 small diesel fired forge furnaces. I am not sure what criteria to use to estimate the required CFMs for each furnace. My only reference is that presented on the ACGIH INdustrial Ventilation Manual for Melting pots and furnaces, they recommend 100-200 cfm per ft2 of opening, I would thing the requirements for a forge furnace should be lower. The opening of my ovens are quite small (about 28" long per 8" high) resulting, using the above mentioned rates, around 250 CFM (seems a bit low)per oven plus volume for combustion products.
Sounds right? anybody out there has worked in a similar application?
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