HXAIR - Main Window

This window is used to describe the Air Cooled Heat Exchanger unit by selecting either Rating or Design Calculation Mode. After selecting the required mode, relevant details can be entered in the required windows. When Design Mode is selected, MULTIBUNDLE and Pressure Drop Options Window will be disabled and if instead Rating Window is selected, DESIGN CONSTRAINTS Window will be disabled.

Simulation Model

Select one of the following options as desired:

PRO/II: The PRO/II option solves air cooled heat exchanger cases using the PRO/II ACE algorithms. Enter all data using the data entry fields and push button in the main data entry window.
HTRI: This HTRI’s XACE option allows solving the air cooled heat exchanger cases using HTRI algorithms. Choosing the HTRI option disables most of the data entry push buttons and data entry fields in the main ACE data entry window. Instead, an HTRI Setup button is activated. Once activated, the HTRI Setup button must be used to enter data required by the HTRI model.

The following buttons are available only when the Use PRO/II Simulation Model is active. This is the default mode of calculation.

The Components of the main window are:

DESIGN CONSTRAINTS WINDOW
MULTIBUNDLE
MATERIAL DATA
AIRSIDE DATA
FILM COEFFICIENTS
FAN DATA
FIN TUBE DATA
TUBE SIDE DATA
PRESSURE DROP
SPECIFICATIONS
PRINT OPTIONS
TUBESIDE NOZZLE OPTIONS.

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 and various transport and critical properties are calculated.

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Air Cooled Heat Exchanger - HTRI Setup