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Fouling on direct oven flue heat exchanger

January 01, 2020

Hello,

I was wondering if anyone can me some insight into fouling issues on a potential combustion air preheater, for use on a direct oven. I am aware that combustion air preheaters have been installed successfully on indirect oven lines, but I am unsure if it is feasible on a direct oven. The flue stream will contain small solid particles and possibly fat alongside the obvious combustion products and water vapour.

Has anyone here successfully installed a heat exchanger on a direct oven flue line? Or heard of such a project?

I have created a model with expected savings which make the idea tempting, as long as the heat exchanger doesn’t cake up with biscuits residue!

Any and all responses appreciated.

heat transfer
baking
energy
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