Simple Heat Exchanger Main Window
This window is used to describe the heat exchanger unit by selecting the hot and/or cold side streams, operating conditions, specifications, and zone analysis.
Hot-side and Cold-side
The Hot-side and Cold-side streams are specified by pushing the desired stream button for each side of the exchanger, and entering the stream parameters in the windows displayed. The streams can be process, utility, and column internal streams.
Process Stream button : Displays the Process Stream Window, where you can select the heat exchanger side(s) for the process streams connected to the unit.
Utility Stream button : Displays either the Hot utility Window (for Hot side) or the Cold utility Window (for Cold side), where you can enter specifications for the utility stream. The utility fluids that are available will depend on the side (Hot/Cold) selected.
Attach
to Column button : Displays the Attached
to Column
Window, where you select the column internal stream by selecting the
desired column unit and its attachment.
The availability of these push buttons depends on the number of sides of the heat exchanger to which process streams are attached ( Heat Exchanger Type). See Selecting Hot and Cold Side Streams for details.
Pressure Drop
If a process stream or a stream attached to a column has been selected for one side, you may optionally enter a value for the pressure drop between the inlet and outlet points for that side of the exchanger. The default is zero pressure drop.
Specification button
Displays the Heat Exchanger Specifications Window, where you can select the desired performance specification and enter the required values. The specifications include outlet temperature, exchanger duty, stream temperature approaches, minimum internal temperature approach (MITA), or overall U and Area.
Configuration button
Displays the Heat Exchanger Configuration Window, where you can set the exchanger configuration to be either Countercurrent or Cocurrent. Mixed flows are indicated as countercurrent.
Zones Analysis button
Displays the Heat Exchanger Zones Analysis Window, where you can request zone analysis to be performed. Zones analysis is useful when phase changes occur within the exchanger unit.
Print Options button
If zone analysis has been selected, you may choose the option of printing the zone analysis results in the output report. Note that this can also be done through the "Define format / Unit Operations" menu command.
Complete technical details may be found in topics under Heat Exchangers in the PRO/II Reference Manual.
Standard Heat Curves option
When the Standard Heat Curves option is selected, three standard heating/cooling curves are generated on shell and tube sides of the heat exchanger. These curves are generated at three isobar points: starting pressure, midpoint pressure, and ending pressure. For each curve, 11 evaluation points are considered. Also, for each curve, the transport properties are calculated.
Related Topics