Sensible Heat Due to Feed

If a feed stream to a reactor is at a different temperature (Tfd) than the reactor s contents (Tr), the thermal effect of the feed stream must be accounted for in the heat balance. This effect is also called sensible heat  

This effect is especially important in the semi-batch reactor. If the temperature difference between reactor and feed is important and/or the feed rate is high, this term may play a dominant role, the sensible heat significantly contributing to reactor cooling. In such cases, when the feed is stopped, it may result in an abrupt increase of the reactor temperature. This term is also important in calorimetric measurements, where the appropriate correction must be performed. 

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