Figure P19.3 shows a network design using steam, cooling water and some heat recovery.

(a) Does this design achieve the minimum energy target for \(\Delta T_{\min }=20^{\circ} \mathrm{C}\) ?

(b) If the current network does not achieve the targets, show a network design that does.

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(a) \(T_{\mathrm{C}_{\text {pinch }}}=150{ }^{\circ} \mathrm{C} ; T_{\mathrm{H}_{\text {pinch }}}=170{ }^{\circ} \mathrm{C} ; Q_{\mathrm{C}}=480 \mathrm{~kW} ; Q_{\mathrm{H}}=380 \mathrm{~kW}\);

(b) \(\left.Q_{\mathrm{C}_{\text {min }}}=360 \mathrm{~kW} ; Q_{\mathrm{H}_{\text {min }}}=260 \mathrm{~kW}\right]\)

Transcribed Image Text:

260 FIGURE P19.3 Network for problem P19.3. 230 Steam duty 380 kW 150 Cold water duty: 480 kW 60 Process Duty: 420 kW Duty: 300 kW 50 150