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Essentials of Chemical Reaction Engineering by H. Scott Fogler

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12.1.1 Deriving the Energy Balance for a PFR

We will carry out an energy balance on the volume ΔV. There is no work done, i.e., image, so Equation (11-10) becomes

12-1

image

The heat flow to the reactor, image, is given in terms of the overall heat transfer coefficient, U, the heat exchange area, ΔA, and the difference between the ambient temperature Ta and the reactor temperature T.

where a is the heat exchange area per unit volume of reactor. For a tubular reactor ...

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