SF_14
Function SF_14 provides the shape factor ([m] or [ft]) for conduction through edges of three adjoining walls of equal thickness. Note that this characterizes heat transfer above what is already occurring due to 1D heat transfer between inner and outer wall surfaces and 2D heat transfer at the corner of two adjacent walls (as determined by SF_13).
Input:
L = thickness of wall ([m] or [ft])
Example: SF = SF_14(L)
Reference: Incropera, F. & DeWitt, D. (2002). Fundamentals of heat and mass transfer, 5th ed. Hoboken, New Jersey: John Wiley & Sons. p. 193-194.
Example:
$UnitSystem SI Mass J K Pa Radian
$VarInfo L, SF units=m
L = 0.1 [m]
SF = SF_14(L)
{Solution:
SF = 0.015 [m]}