.TransiEnt.Components.Gas.Combustion.Controller.ControllerAirForBurner

Information

1. Purpose of model

This is a controller to control the air mass flow for given fuel mass flow rate and composition as well as air excess ratio.

2. Level of detail, physical effects considered, and physical insight

The composition and mass flow rate of the fuel are measured and the necessary air is calculated. For the mass fraction of oxygen in air, 0.233 is assumed.

3. Limits of validity

The validity is limited because the composition is measured ideally and continuously which is not possible in reality.

4. Interfaces

m_flow_fuel: input for the fuel mass flow rate in [kg/s]

xi: input for the mass fractions of the fuel [kg/kg]

m_flow_air_source: output for the air mass flow rate (negative sign) in [kg/s]

5. Nomenclature

(no remarks)

6. Governing Equations

The minimum oxygen mass flow for a stochiometric complete combustion is calculated according to the reactions of the components CO, H2, CH4, C2H6, C3H8, C4H10. The hyperstochiometric air mass flow is calculated by dividing the minimum oxygen mass flow by the mass fraction of oxygen in air and multiplying it with the excess air ratio.

7. Remarks for Usage

(no remarks)

8. Validation

(no remarks)

9. References

(no remarks)

10. Version History

Model created by Carsten Bode (c.bode@tuhh.de) on Tue Apr 05 2016