2. a. . As a process engineer, you are assigned to retrofit the heat recovery system to satisfy the process heating and cooling requirements. The stream data of the system were extracted, and are incorporated into TABLE Q2. TABLE Q2: Steam data of the process Stream Supply Target Temperature Temperature No Type Ts (C) T, (C) H1 Hot 330 40 Heat Capacity Flowrate mCp (kW/C) 1.9 H2 Hot 250 120 2.25 C1 Cold 50 260 2.0 C2 Cold 170 330 1.5 i. If minimum approach temperature is 20C, calculate the hot and cold pinch temperatures and the minimum hot and cold utilities using Problem Table Algorithm. Show the steps of calculations. [12 marks] . ii. Design the heat exchanger network that meets the maximum energy recovery. [8 marks]