Q.2 [20 marks] In the given process as shown below in Fig Q2, the values for heat capacity flowrate (CP) in MW C-1 for streams 1, 2, 3 and 4 are: 0.25, 0.5, 0.35 and 0.3 respectively. 40C Product 1 Stream 1 Stream 3 Reactor 1 20C 120C 140C 40C 130C Product 2 40C Stream 2 Stream 4 Reactor 2 Product 3 20C 80C 130C 30C Figure Q2. Process diagram. (a) Calculate the enthalpy change (AH) of streams 1, 2, 3 and 4. [6 marks] (b) Using a minimum approach temperature of 10C, determine the temperature interval diagram, the pinch temperatures and the minimum required hot and cold utilities. [8 marks] (c) Considering the values of pinch temperatures and minimum hot and cold utilities obtained in b), is it possible to design a Heat Exchange Network (HEN) for the plant to recover the heat? What would be the effect on the economic and environmental pillars of sustainability of the proposed alterations to the plant? [6 marks]