Buildings.Fluid.Data.Fuels

Information

Package with records for fuel properties. Note that the heating value and the mass density can vary for individual fuels. The parameter mCO2 are the CO₂ emission in kilograms that are released per kilogram fuel that is burnt.

Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).

Package Content

Name	Description
NaturalGasLowerHeatingValue	Natural gas, lower heating value
NaturalGasHigherHeatingValue	Natural gas, higher heating value
HeatingOilLowerHeatingValue	Heating oil, lower heating value
HeatingOilHigherHeatingValue	Heating oil, higher heating value
WoodAirDriedLowerHeatingValue	Wood, air-dried, lower heating value
Generic	Generic record of fuel properties

Buildings.Fluid.Data.Fuels.NaturalGasLowerHeatingValue

Parameters

Type	Name	Default	Description
SpecificEnthalpy	h	50E6	Heating value (lower or upper, depending on fuel) [J/kg]
Density	d	0.84	Mass density [kg/m3]
MassFraction	mCO2	2.23	CO2 emission at combustion, in kg/kg fuel [1]

Modelica definition

record NaturalGasLowerHeatingValue = Buildings.Fluid.Data.Fuels.Generic (
    h=50E6,
    d=0.84,
    mCO2=2.23) "Natural gas, lower heating value";

Buildings.Fluid.Data.Fuels.NaturalGasHigherHeatingValue

Parameters

Type	Name	Default	Description
SpecificEnthalpy	h	55.5E6	Heating value (lower or upper, depending on fuel) [J/kg]
Density	d	0.84	Mass density [kg/m3]
MassFraction	mCO2	2.23	CO2 emission at combustion, in kg/kg fuel [1]

Modelica definition

record NaturalGasHigherHeatingValue = NaturalGasLowerHeatingValue (
    h=55.5E6) "Natural gas, higher heating value";

Buildings.Fluid.Data.Fuels.HeatingOilLowerHeatingValue

Parameters

Type	Name	Default	Description
SpecificEnthalpy	h	42.6E6	Heating value (lower or upper, depending on fuel) [J/kg]
Density	d	845	Mass density [kg/m3]
MassFraction	mCO2	3.136	CO2 emission at combustion, in kg/kg fuel [1]

Modelica definition

record HeatingOilLowerHeatingValue = Buildings.Fluid.Data.Fuels.Generic (
    h=42.6E6,
    d=845,
    mCO2=3.136) "Heating oil, lower heating value";

Buildings.Fluid.Data.Fuels.HeatingOilHigherHeatingValue

Parameters

Type	Name	Default	Description
SpecificEnthalpy	h	45.4E6	Heating value (lower or upper, depending on fuel) [J/kg]
Density	d	845	Mass density [kg/m3]
MassFraction	mCO2	3.136	CO2 emission at combustion, in kg/kg fuel [1]

Modelica definition

record HeatingOilHigherHeatingValue = HeatingOilLowerHeatingValue (
    h=45.4E6) "Heating oil, higher heating value";

Buildings.Fluid.Data.Fuels.WoodAirDriedLowerHeatingValue

Information

The lower heating value is based on Recknagel 2005, Tafel 1.3.6-1.

References

Hermann Recknagel, Eberhard Sprenger and Ernst-Rudolf Schramek. Taschenbuch fuer Heizung und Klimatechnik.72. Auflage. Oldenbourg Industrieverlage Muenchen. ISBN 3-486-26560-1. 2005.

Extends from Buildings.Fluid.Data.Fuels.Generic (Generic record of fuel properties).

Parameters

Type	Name	Default	Description
SpecificEnthalpy	h	14.6E6	Heating value (lower or upper, depending on fuel) [J/kg]
Density	d	700	Mass density [kg/m3]
MassFraction	mCO2	0	CO2 emission at combustion, in kg/kg fuel [1]

Modelica definition

record WoodAirDriedLowerHeatingValue = Buildings.Fluid.Data.Fuels.Generic (
    h=14.6E6,
    d=700,
    mCO2=0) "Wood, air-dried, lower heating value";

Buildings.Fluid.Data.Fuels.Generic

Information

This is a generic record where the fuel properties need to be specified by the user.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

Type	Name	Default	Description
SpecificEnthalpy	h		Heating value (lower or upper, depending on fuel) [J/kg]
Density	d		Mass density [kg/m3]
MassFraction	mCO2		CO2 emission at combustion, in kg/kg fuel [1]

Modelica definition

record Generic "Generic record of fuel properties"
  extends Modelica.Icons.Record;
  parameter Modelica.SIunits.SpecificEnthalpy h 
    "Heating value (lower or upper, depending on fuel)";
  parameter Modelica.SIunits.Density d "Mass density";
  parameter Modelica.SIunits.MassFraction mCO2 
    "CO2 emission at combustion, in kg/kg fuel";
end Generic;