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Q3. The two-tank heating process shown below consists of two identical well-stirred tanks in series. A flow of heat, Btu/min, can enter tank 2. A PD controller with (K-6 psia per "F, to=0.5 min) is used to maintain the temperature in tank 2 at some desired value (To). Neglect the dynamic lag in measuring and final control elements. An input of 1 psia to the final control element changes heat input to the tank by 500 Btu/min. Develop a block diagram of the control system with appropriate transfer function in each block. Each transfer function should contain numerical values of the parameters Initially, a TT.T, 60 F and q -0. The following data apply. w - 250 lb/min, hold up volume of each tank 51), density of Nuid - 50 16/T", heat capacity of Nuid - 1 Btu/ (b) (F). At time to the temperature of the iniet water T. drops from 60 °F to 52°F according to a stop function. Determine the dynamic response of the system and the offset. ICLOS, 12 M) PD controller Final control psia element 77 T measuring element Tank Tank 2