33.3.15 Core Porosity Model Dialog Box

The Core Porosity Model dialog box allows you to modify or define a heat exchanger core model. This dialog box opens when you click Edit... in the Ungrouped Macro Heat Exchanger dialog box.

Controls

Name   specifies the name of a new heat exchanger core model.

Database   contains a drop-down list of all heat exchanger core models that are currently available.

Gas-Side Pressure Drop   contains parameters that define the air-side pressure drop.

Minimum Flow to Face Area Ratio   sets the value of $\sigma$ in this equation in the separate Theory Guide.

Entrance Loss Coefficient   sets the value of $K_c$ in this equation in the separate Theory Guide.

Exit Loss Coefficient   sets the value of $K_e$ in this equation in the separate Theory Guide.

Gas Side Surface Area   sets the value of $A$ in this equation in the separate Theory Guide.

Minimum Cross Section Flow Area   sets the value of $A_c$ in this equation in the separate Theory Guide.

Core Friction Coefficient   sets the value of $a$ in this equation in the separate Theory Guide.

Core Friction Exponent   sets the value of $b$ in this equation in the separate Theory Guide.

Change/Create   saves the settings in the dialog box and adds the new model to the Database list.

Read...   opens the Select File dialog box (see Section  2.1.6), in which you can select an external file containing a predefined heat exchanger core model.