Consider the perpendicular rectangles shown schematically.

(a) Determine the shape factor F₁₂.

(b) For rectangle widths of X = 0.5, 1.5, and 5 m, plot F₁₂ as a function of Z_b for 0.05 Z_b 0.4m. Compare your results with the view factor obtained from the two-dimensional relation for perpendicular plates with a common edge (Table).

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Z,-04 m Y= 03 m Z, = 0.2 m X 0.5 m Relation Geometry Parallel Cylinders of Different Radii 7 + [C - (R + 1) - [C -(R - 1)n + (R - 1) cos - (R + 1) cos R = r,tr, S = s/r, C = 1 +R+S Cylinder and Parallel Rectangle tan tan Infinite Plane and Row of Cylinders 1.-1-(e) -(e)()"] F, = 1- tan