Thermal Effect of the Feed

As explained in Section 2.4.1.5, if the feed is not at the same temperature as the reaction mixture, it will also produce a thermal effect proportional to the temperature difference between feed (Tp) and reaction mass (Tr), to its specific heat capacity c Pfd and to the mass flow rate ihp 

If the volume of the feed is important compared to the initial charge, that is, great volume expansion factor (e), the thermal effect of the feed may become comparable, in absolute value, to the heat of reaction. 

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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 ... 

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