Question: A process stream is heated as a gas from 25C to 250C at constant P. A quick estimate of the energy requirement is obtained from

A process stream is heated as a gas from 25°C to 250°C at constant P. A quick estimate of the energy requirement is obtained from Eq. (4.3), with CP taken as constant and equal to its value at 25°C. Is the estimate of Q likely to be low or high? Why?

Eq. (4.3)

Q = AH = CpdT (4.3)

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