Question

A proposed building design has 20,000 sq. ft. of glass with shading coefficient 0.7, all of the windows face north. What is the total solar load on the north side in tons April 21 at 4:00 pm?

a. 32. 6 tons

b. 25.7 tons

c. 15.9 tons

d. 12.8 tons

e. 6.4 tons

Answer 1

Qadar = AX SC XSHGF where. where! A = 20,000 1q.ft = 20,000 X0-082903 m = 1858.06 m2. S.C =Shading coefficie 20.7. SHGF = solar heat Gain fackr At April er aturopy , SHGF a 6905 wlhn. Ta 11 Qsolar = 1858.066 x 0.7 x 6905 white = 9035406 law =90394.619 X 0.000280 tons = 25067 forg ř 25.7 tay @solar = 2007 fors V2 An option b) 25.7 tors.