Heat loss allowance factor

Factor to allow for heat loss into adjacent components.

Symbol
$\epsilon_{k}$
Formulae
$\sqrt{A_{k} F_{k} \sqrt{\frac{t_{k}}{S_{k}}} + \frac{B_{k} F_{k}^{2} t_{k}}{S_{k}} + 1}$general formula for conductors and spaced wire screens
$\sqrt{X_{k} \sqrt{\frac{t_{k}}{S_{k}}} + 1 + \frac{Y_{k} t_{k}}{S_{k}}}$simplified formula for conductors and spaced wire screens
$- 0.069 M_{k}^{2} t_{k} + 0.61 M_{k} \sqrt{t_{k}} + 0.0043 \left(M_{k} + \sqrt{t_{k}}\right)^{3} + 1$formula for screens, sheath and wires
Related
$A_{k}$
$B_{k}$
$M_{k}$