Heat Transfer Simulation and Temperature Rapid Prediction for Trench Laying Cable

Table 4

Typical geometrical and physical parameters for the pipe laying cable [3].

	Diameter (mm)	Thermal conductivity (W/(m∙K))	Electronic conductivity (S/m)	Relative dielectric constant
Cable core	60.4	400	5.998 × 10^7	1.0
Insulation layer	120	0.286	1 × 10^−15	2.5
Sheath layer	140	238	3.774 × 10^7	1.0
External layer	150	0.280	1 × 10^−15	2.5
PVC pipe	620	0.167	1 × 10^−16	1.0