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Plots

This section shows some of the common plots used in the dual heat exchanger simulation.

The steps to create the plots are:

1. Click Load Results in the Simulation Panel.
2. Select the required result file in the ensuing Load Results dialog box, click Open.

 

Results - Specified inlet temperature

The plots for specified inlet temperature simulation are created after loading the dual_hx_model_inlet_temp.sres result file.

Temperature of air

The inlet and outlet temperature of air are monitored with the following plots.

1. Select air_inlet and air_outlet under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in the Plot Panel toolbar.
4. Select Temperature under Heat and click Plot Selected Variables icon.

 

 

Temperature of coolant

The inlet and outlet temperature of coolant are monitored with the following plots.

1. Select coolant_inlet and coolant_outlet under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in the Plot Panel toolbar.
4. Select Temperature under Heat and click Plot Selected Variables icon.

 

 

Heat flux

Heat balance is achieved, when the heat gained by air is equal to the heat rejected by coolant, which is monitored with heat flux plots.

1. Select air_inlet and air_outlet under Boundaries of radiator Volumes in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in the Plot Panel toolbar, select Total Flux under Heat.
4. Click Combine Entity Data into a Single Curve icon to obtain the net heat flux through the Boundaries.
5. Select coolant_inlet and coolant_outlet under Boundaries of radiator_linked Volumes in the Geometric Entities Panel.
6. Click Click for Variable List icon in the Plot Panel toolbar, select Total Flux under Heat.
7. Click Combine Entity Data into a Single Curve icon to obtain the net heat flux through the Boundaries.
8. Select air_inlet, air_outlet, coolant_inlet and coolant_outlet under Boundaries of radiator and radiator_linked Volumes in the Geometric Entities Panel.
9. Click Combine Entity Data into a Single Curve icon to obtain the net heat flux through the Boundaries.

 

´	Note: The output for the specified inlet temperature simulation can be obtained from the heat flux plot, heat rejection rate = 178000 W see, Figure 7.336.

 

Results - Specified heat rejection

The above plots can also be created for the specified heat rejection simulation after loading the dual_hx_model_heat_rej.sres result file.

Temperature of coolant

The inlet and outlet temperature of coolant are monitored with the following plots.

1. Select coolant_inlet and coolant_outlet under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in the Plot Panel toolbar.
4. Select Temperature under Heat and click Plot Selected Variables icon.

 

Note: The output for the specified heat rejection simulation can be obtained from the coolant temperature plot, coolant inlet temperature = 366 K see, Figure 7.337.