Drying with open fire heating
TAKUBO ANALECTS
It is a drying method to directly heat the inside of oven by a burner or others and to dry coated work pieces.
It is also called drying with open fire hot-wind. Propane gas is mainly used as energy source.
The way of heating is just to burn the gas by gas burner so that the inside of oven is heated.
Connecting directly a combustion chamber with a drying room, the inside of oven is directly heated by a burner or others in order to dry coated work pieces. 
In case of drying for the paint having a lot of solvent, it is very dangerous that vapor from the solvent could easily catch fire.
We never recommend this method for industrial coating although the sufficient air-supply might be able to prevent a serious accident.
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