designing a furnace.pptx
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DESIGNING A FURNACE
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Aspects involved in heating a fluid are:
Combustion(heat available in the fluegases)
Thermal(heat balances ,heat transfer)
Hydro dynamic(pressure drop)
Mechanical(temp. and pressure behavior,tube bundle support & outside forces )
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Determining heat exchange
surfaces
Heat exchange surface areacalculations are based in 2 types:
Thermal balance
Heat transfer laws
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1.Thermal balance
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2.Heat transfer laws
Radiation
Convection
Conduction
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A . Radiation
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B . Convection
The transfer of heat between a fluid and wallwith a relative movement of the fluid with
respect to the wall.
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C . Conduction
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1. Radiation
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2 C ti
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2.Convection
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Shut down conditions in case of emergency
are:
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Thank you