Consider the process flowsheet in Figure 11.59 where the duties required for each heat exchanger are in MW, and the source and target stream temperatures are:

(a) The flowsheet calls for \(990 \mathrm{MW}\) to be removed by cooling water and \(750 \mathrm{MW}\) to be provided by steam. It is suspected that this design does not meet MER targets for \(\Delta T_{\text {min }}=10^{\circ} \mathrm{C}\). Verify or refute this suspicion.

(b) If verified, design a HEN to meet MER targets for \(\Delta T_{\min }=10^{\circ} \mathrm{C}\).

Feed 50C F-1001 R-100 E-100 800C 800C 70C 5 MW Figure 11.58 PFD for a process for the manufacture of X and Y. 3.5 MW E-101 (W) 2 MW 50C Product X E-103 180C 50C Product Y E-102 T-100 0.5 MW 2 MW