This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: = 0.6015/0.9050 = 0.6646 Φ = 131.7° (if in a.m.) or Φ = 228.3° (if in p.m.) Ψ = 180° when the surface facing south γ =  Φψ  = 228.3 180 = 48.3° Titled angle α = 40° cos θ = cos β cos γ sin α + sin β cos α = cos(25.2°)cos(48.3°)sin(40°) + sin(25.2°)cos(40°) = 0.3869 + 3262 = 0.7131 θ = 44.5° From Table 72: On Feb. 21, A = 1187 W/m 2 , B = 0.142 C N = 0.98 (Figure 77) G D = G ND *cos θ = 833.46W/m 2 *0.7131 = 594.3W/m 2 Power = G D *area*efficiency = 594.3*10*15% = 891.5 W 4 4 ° ° 2 / 4 . 833 98 . 2 . 25 sin 142 . exp 1187 sin exp m W C B A G N ND = • ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = β...
View
Full
Document
This note was uploaded on 01/30/2011 for the course TSM 436 taught by Professor Wang,x during the Spring '08 term at University of Illinois, Urbana Champaign.
 Spring '08
 Wang,X

Click to edit the document details