Cableizer
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Ratio thermal resistivity dry/moist soil

Symbol
$v_4$
Formulae
$\frac{\rho_{4d}}{\rho_4}$
Related
$\rho_4$
Thermal resistivity of soil [K.m/W]
$\rho_{4d}$
Thermal resistivity of dry soil [K.m/W]
Used in
$\Delta \theta_c$
Temperature rise of conductor [K]
$\Delta \theta_{c,t}$
Transient temperature rise of conductor [K]
$\Delta \theta_d$
Temperature rise by dielectric losses [K]
$\Delta \theta_{duct}$
Temperature rise by losses in ferromagnetic duct [K]
$I_c$
Conductor current [A]
$M_1$
Corrected cyclic rating factor [K]
$T_{eq}$
Equivalent thermal resistance [K.m/W]
$T_r$
Total thermal resistance [K.m/W]
$\theta_c$
Temperature of conductor [°C]
$\theta_{de}$
Temperature of duct outer wall [°C]
$\theta_e$
External temperature of the object [°C]
$\theta_{hsj}$
Temperature of outer jacket [°C]
$W_{hs}$
Heat dissipation of heat source [W/m]