# Constant c for a gas under PAC/GIL conditions

The functions F(p,$\theta$) and F(p) were introduced by J. Vermeer in the paper: 'A simple formula for the calculation of the convective heat transfer between conductor and sheath in compressed gas insulated (CGI) cables', 1983 as published in Elektra 87.

The parameters for N2 and SF6 are taken from Vermeer' paper. Those were recalculated using the method described in the paper and the researched gas parameters.

The parameters for Air, CO2 and O2 were calculated using the method described in the paper and the researched gas parameters.

Symbol
$c_{gas}$
Used in
Choices
IdGasCableizerVermeer1983
Airdry Air35.81
N2N235.5335.6
SF6SF669.2669.4
CO2CO238.32
O2O234.34