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Tutorial Modeling of monolith reactors

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Thermal boundary layer<br />

T ∞<br />

T ∞<br />

T S<br />

δ T<br />

The heat transfer at the surface is :<br />

The heat transfer can be defined as:<br />

∂T<br />

q′′ = −k<br />

∂<br />

y<br />

y = 0<br />

( )<br />

′′ = −<br />

q h TS<br />

T ∞<br />

The heat transfer coefficient h assumes a value to make the equality true.<br />

If the temperature gradient at the surface is known, then h can be calculated.<br />

34

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