For adiabatic operationand when the work done by the stirrer can be neglectedEquation (9-12) can be written as | |||
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(9-13) | ||
whereAn analytical solution relating X and T can be found for the case of constant or mean heat capacity. Combining Equations (2-6) and (9-13) yields | |||
(9-15) | |||
multiplying by dt, separating variables and integrating between the initial conditions, X = 0 and T =T0, and later conditions X =X and T =T, yields | |||
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Taking the antilog, we have | |||
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solving for X yields | |||
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Then | |||
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(9-16) | ||
This form is the same as the equation relating X and T derived for flow reactors. Rearranging yields | |||
Temperature |
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(9-17) |