*3.1. Computation of the Energy Density Factor EDF*

In accordance to Equation (11), the energy density factor results equal to 1.085. Therefore, to deliver the same amount of energy, an increase up to the 8.5% of the HCNG flowrate is required respect to the existing natural gas flowrate. Moreover, in accordance to Equation (17), a density ratio (ρH2/ρNG) of 0.099 results.
