modelRT2EfficiencyCharline
Extends from TransiEnt.Basics.Icons.Block.
Information
1. Purpose of model
This block calculates a boiler's efficiency from the return temperature of the heating system (heat carrier).
2. Level of detail, physical effects considered, and physical insight
The efficiency of a boiler is both depending on the part load and the return temperature of the heat carrier. This block considers the latter with a representative characteristical line giving the efficiency for a certain return temperature range.
As condensing boilers have different characteristical lines than non-condensing have, so the block loads different lines for a given parameter condensing. Also the reference value of the efficiency can be chosen via referenceNCV.
3. Limits of validity
(no remarks)
4. Interfaces
- T_return: input value of the return temperature
- eta: output value of the heating efficiency
5. Nomenclature
(no remarks)
6. Governing Equations
(no equations)
7. Remarks for Usage
(no remarks)
8. Validation
(no remarks)
9. References
Planungsunterlage Ecostream-Gasheizkessel Logano GE434 und Gas-Brennwertkessel Logano plus GB434 – 09/2005
10. Version History
Model created by Paul Kernstock (paul.kernstock@tu-harburg.de) June 2015
Modified by Lisa Andresen (andresen@tuhh.de) Nov 2016
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | condensing | false | Condensing operation |
| Boolean | referenceNCV | true | true, if efficiencies shall be in respect to NCV, false will give GCV referenced efficiencies |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Basics.Interfaces.General.TemperatureCelsiusIn | T_return | Input for return temperature in Celsius | |
| TransiEnt.Basics.Interfaces.General.EfficiencyOut | eta | Output for efficiency |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Tables.GenericCombiTable1Ds | charLine |