Water/Steam-Path, Process Data

Documentation of the process data at the inlet and the outlet of the components in the water/steam path (without ST).

All the components lying in the water/steam path must be selected in the direction of the flow. This does not include all measurement points and pastille.

Components:

· All components present in the water/steam path.

Example:

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

Title of the process data of the water / steam - path

	M [kg/s]	P [bar]	T [°C]	H [kJ/kg]	TTD [K]	Q [kW]	M+/M- [kg/s]
Pump_1	59.342 59.342	8.291 213.5	171.90 176.59	727.5 759.1			59.342
Splitter_10	59.342 53.817 5.526	213.5 213.5 213.5	176.59 176.59 176.59	759.1 759.1 759.1			-53.817
Splitter_9	5.526 0.000 5.526	213.5 213.5 213.5	176.59 176.59 176.59	759.1 759.1 759.1
Duplex_heat_exchanger	14.439 14.439 5.526 5.526	8.291 7.892 213.5 213.4	171.90 323.73 176.59 210.20	2768.9 3107.5 759.1 906.1	149.75 9.69 145.07 123.23	4888.7 812.0	14.439 -14.439
Splitter_5	5.526 2.406 3.119	213.4 213.4 213.4	210.20 210.20 210.20	906.1 906.1 906.1			-2.406
Control_valve_4	3.119 3.119	213.4 164.1	210.20 210.65	906.1 906.1
integr__ECO_VERD_UEB_3	3.119 3.119	164.1 163.6	210.65 307.73	906.1 1379.9	129.35 69.07	1477.9

Comments on the report:

· TTDis the difference between T_Medium and the temperature at the inlet or the outlet respectively.
1. line: Differential temperature between the primary inlet and the secondary outlet
2. line: Differential temperature between the primary outlet and secondary inlet

· Qis the heat flow rate taken up by the water- / steam side (primary flow).

· M+/M-is the change in the mass flow

· A change in the mass flow is indicated, when the outlet of the component of the list is not connected with the inlet of the next component in the list.

· For the first component, all the inlets are displayed as the change in the mass flow.

· For the last component, all the outlets are displayed as the change in the mass flow.

· Inflow in the mass flow is displayed as a positive and outflow is shown as a negative value.

Comments on component 70 (Evaporator / Drum Macro):

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

Generate Sub-report

· Select all the components in the water/steam path of the model.
The components must be selected in the direction of the flow.

· Call the dialog box "Modify Sub-Report".

· Select the sub-report "Water/Steam - 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 water/steam-path and then click on the button "Modify" or else double-click the sub-report for the process data of the water/steam 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.

If several water/steam paths are to be documented or else there are different paths owing to the splitting or the mixing of the pipes, then separate sub-reports of this type must be generated.

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