$3\mathrm{.}11.$ Determine the pinch temperature and the minimum utility requirements for the process set out here. Take the minimum approach temperature as $15C.$

Devise a heat exchanger network to achieve maximum energy recovery.

$\backslash$table$[[\backslash$table$[[$Stream$],[$Number$]],$Type,$\backslash$table$[[$Heat capacity$],[k\frac{W}{C}$