Mathematinal Modell ere A is cross-section area of cylindrical tank in m2,h is the liquid level inside the k in m.a is the percentage of Fout(1) re-circulating into the tank. u as an engineer is requested to control the mixing system shown above. The syste ween hot stream at temperature TH in C with the flow rate FinHot in m3/h, colc iperature TCC with flow rate FinCold in m3/h and a circular percentage flow rate f the reactor which temperature is TC and volume Vm3. Assumed that the mixin temperature TC at any point in the reactor is similar to temperature going o ctor TC. It is assumed that density, heat capacity are constant. From thermod know that the the mixing temperature of hot and cold stream is laying in betwe temperature TC