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

$K_0$

Coefficient K for a gas under PAC/GIL conditions

Choices

Id	Gas	Cableizer	Vermeer1983
Air	dry Air	35.81
N2	N₂	35.53	35.6
SF6	SF₆	69.26	69.4
CO2	CO₂	38.32
O2	O₂	34.34