For a new process, the following process streams must be cooled or heated:

Use the MUMNE algorithm for heat-exchanger networks and a minimum approach temperature of 20°C.

Determine the temperature interval diagram.

Determine the cascade diagram, the pinch temperatures, and the minimum hot and cold utilities.

Determine the minimum number of heat exchangers above and below the pinch.

Determine the heat-exchanger network above the pinch.

Determine a heat-exchanger network below the pinch that has only one utility exchanger.

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Stream No.m C₂ kW/°C Temperature In °C Temperature Out °C 1 2 3 4 35 3 2 180 120 70 80 100 80 140 160