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Thread: Hot Oil Furnace Efficiency

  1. Hot Oil Furnace Efficiency


    I have a question: Does the efficiency of Hot Oil Furnace [a furnace that is used to increase the temperature of Thermia B oil using fuel gas] decrease by the decreasing the fuel gas flow?

    Let's say the overall efficiency is about 85% when oil temperature is increased from 168 to 240 oC (delta T is around 72 oC). What will happen to the efficiency if I keep the oil flow constant and I decrease the fuel gas flow in order to increase the oil temperature by just 15 oC?

    Also what is the typical thermal efficiency for a Fuel Gas fired Furnace?

    Thanks and regards!

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    Last edited by Nabil17; 07-26-2019 at 03:27 PM.

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