Heat Exchanger Cold Utility Stream
You can use a cold utility stream to cool a process stream or a column internal stream attached to the hot side of the heat exchanger. The utility fluid can be water, air or a refrigerant of your choice. The saturation condition for the selected utility fluid is required for the simulation.
Note that the cold utility stream is available only in the following cases:
1. When only one side of the exchanger contains process stream and it has been specified to be the hot side.
2. When no process streams are connected to the exchanger and the cold side is not attached to a column.
Usage
From the Simple Heat Exchanger Main Window push the Utility Stream button in the Cold-side.
1. For the Utility type, select one of the following fluids:
Water : Cooling medium is water. Only sensible heat effects are considered.
Air : Cooling medium is air. Only sensible heat effects are considered.
Refrigerant : User supplied refrigerant, which is designated as a single component liquid at its bubble point that gains energy and vaporizes. All the components selected in the Component Selection Window are available in the Component list box.
2. If you have selected water or air as the cooling medium, you must supply the inlet and outlet temperatures. The outlet temperature must be greater than the inlet temperature.
If you have selected a refrigerant, choose the refrigerant component you wish to use from the Component list box. Also, specify either the saturation pressure or saturation temperature for the selected component.
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