Coolant Temperature in a CSTR

We have thus far considered only the situation where the coolant is at constant temperature Tc- This requires that the heat load from the reactor and the coolant flow rate are adequate to mamtain the coolant at constant temperature. 

These configurations are essentially two reactors connected by the heat exchange area A, and we will consider this in more detail in a later chapter in connection with multiphase reactors. We do not need to write a species balance on the coolant, but the energy balance in the jacket or cooling coil is exactly the same as for the reactor except that we omit the reaction generation term. 

The jacketed reactor may be assumed to have mixed flow (either by stirring the jacket or by mixing through natural convection) so the jacket also obeys the CSTR equation. Therefore, for the jacketed reactor with a single reaction we write the three equations 

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