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Vintage diagram of a Direct Fired Reheating Furnace #250584564
Description
Vintage illustration diagram showing a Direct Fired Reheating Furnace. Direct-fired furnaces and ovens rely on heating directly by the products of combustion fuel-fired or by electric heating elements. Indirect-fired furnaces and ovens involve some type of heat exchanger for transferring heat from the heat source e.g., steam or hot water to the process. 1900s reference to engineering.
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