modelEnergyConversionNormal
Energy conversion for typical CHP operation either in normal mode or warm-up mode based on time delay
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Information
The model defines energy conversion for a typical CHP operation that includes the normal mode and warm-up mode based on the time delay (CHPs with internal combustion engines). Energy conversion from fuel to the electric power and heat is modeled using system's part-load electrical and thermal efficiencies, based on the empirical data from the manufacturer. The curves are described by a fifth order polynomial, a function of the electric power, water flow rate and water inlet temperature. The air flow rate is modeled using a second order polynomial, a function of the fuel flow rate.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.CHPs.Data.Generic | per | Performance data |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.CDL.Interfaces.RealInput | PEle | Electric power | |
| Buildings.Controls.OBC.CDL.Interfaces.RealInput | mWat_flow | Water mass flow rate | |
| Buildings.Controls.OBC.CDL.Interfaces.RealInput | TWatIn | Water inlet temperature | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput | mFue_flow | Fuel mass flow rate | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput | mAir_flow | Air mass flow rate | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput | QGen_flow | Heat generation rate within the engine |
Revisions
-
April 30, 2021, by Michael Wetter:
Reformulated replaceable class to avoid access of components that are not in the constraining type.
This is for issue #2471. -
April 30, 2021, by Michael Wetter:
Removed connector to itself. -
October 31, 2019, by Jianjun Hu:
Refactored implementation. -
June 1, 2019, by Tea Zakula:
First implementation.