LNG Mass Calorific Value

Inputs

Input	Description
Component Data	Mole Fraction Attribute (DataTable (Xin)
Molecular Weight	Column from Component Table (in any Molecular Weight UOM) (MWi)
Enthalpy	Column from Component Table (Hi)

Calculations

Example

1. Mole% (Xi) is going to be an input into an Attribute as a Data Table using Component Data Reference.

2. While configuring the attribute, check the 'Normalize' option to give you Normalized Mole %(Xin).

3. The Molecular Weight of each component (MWi) is available in the 'SF_Component Table'.

4. Calculate the product of Xin and MWi for each component and add them up to get relative molecular weight.

5. The Heating Value of each component (Hi) is available in the 'SF_Component Table'.

6. Calculate Xin * MWi*Hi for each component and add them to get the Molar Calorific Value.

7. Divide the Molar Calorific Value with the Relative Molecular weight calculated above, to obtain the Mass Calorific Value.

   Component	Xin	MWi	Xin * MWi	MWi	Xin MWi  Hi
   Nitrogen	0.020	28.013	0.006	0.000	0.000
   Methane	91.870	16.043	140738	55.575	819.078
   Ethane	7.680	30.069	2.309	51.961	119.993
   Propane	0.410	44.096	0.181	50.369	9.106
   i-Butane	0.000	58.122	0.000	49.388	0.000
   n-Butane	0.010	58.122	0.006	49.546	0.288
   i-Pentane	0.000	72.149	0.000	48.950	0.000
   n-Pentane	0.000	72.149	0.000	49.045	0.000
   C6+	0.000	86.175	0.000	48.715	0.000
   Oxygen	0.000	31.999	0.000	0.000	0.000
   CO2	0.010	44.010	0.004	0.000	0.000
   			Calorific Value	(MJ/kg)	55.0022