Flue Gas Path, Process Data

Documentation of the process data at the inlet and the outlet of the components in the flue gas or the air path.

Components:

Component	Flue gas	Medium
Gas / Gas heat exchanger(25)	3 => 4	1 => 2
ECO / Compressor/ Super-heater (26)	3 => 4	1 => 2
High Temperature Heat Exchanger (51)	3 => 4	1 => 2
Universal heat exchanger (55)	3 => 4	1 => 2
ECO / Compressor / Super-heater, ABB Type (61)	3 => 4	1 => 2
Duplex heat exchanger (62)	3 => 4	1 => 2 and 5 => 6
Evaporator / Drum Macro (70)	3 => 4	1 => 2
OT - heat exchanger (71)	3 => 4	1 => 2
ECO / Compressor / Super-heater, Finned Tubes (73)	3 => 4	1 => 2

Example:

Alstom Plant: KA-24 Unit: 1 R-Date: 21.12.2004 16:51:14

Title for the Flue gas path - process data

Comments on the report:

TTDis the difference between T_Medium and the temperature of the flue gas path.
1. line: Differential temperature between the secondary inlet and the primary outlet
2. line: Differential temperature between the secondary outlet and the primary inlet
TMEDis the temperature on the medium side.
Q-MEDis heat flow rate taken up by the medium side (primary flow).
Q-LOSSis the heat loss within the component.
For each component, as far as available, the input values are documented in the first line and the output values in the second line. In case of Duplex – heat exchangers, 4 lines are printed owing to the double water side.

Comments on the component 70 (Evaporator / Drum Macro):

TTDis the difference between T_Medium and the temperature of the flue gas path.
Since the temperature at the inlet of the evaporator is an internal calculated value, the temperature at the saturated steam outlet is assumed in the report also for the inlet of the evaporator.
TMEDis the temperature at the medium side of the evaporator.
Since the temperature at the inlet of the evaporator is an internal calculated value, the temperature at the saturated steam outlet is assumed in the report also for the inlet of the evaporator.

Generate sub-report

Select all components (all heat exchangers) in the flue gas path of the model.
The sequence should be in the direction of flow.
Call the dialog box "Modify Sub-Report".
Select the sub-report "Flue gas - path, process data" and import it in the list of the sub-reports.
Enter an extra title, if needed.
Select the sub-report for the process data of the flue gas path and then click on the button "Modify" or double-click the sub-report for the process data of the flue-gas path.
The dialog box "Edit Sub-Report" opens.
A click on the button "Insert (Sel.)" inserts the components selected earlier in the cycle in the list of the components of the sub-report.
Close the dialog box for the list of the components through the button "Close".
Close the dialog box for modifying the sub-report through the button "Close".

The components selected earlier are inserted in the sub-report in the order, in which they were selected.