A room has an internal lighting heat gain of 2500 W, 60 percent radiative and 40 percent convective from 8:00 AM to 6:00

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A Room Has An Internal Lighting Heat Gain Of 2500 W 60 Percent Radiative And 40 Percent Convective From 8 00 Am To 6 00 1 (31.56 KiB) Viewed 77 times

A room has an internal lighting heat gain of 2500 W, 60 percent radiative and 40 percent convective from 8:00 AM to 6:00 PM, and 250 W with the same radiative-convective split for the rest of the day. If the room matches the LW zone from Table 8.21 whose radiant time factors (RTF) are given Table 3. Calculate the cooling load only for the hour 10 and 20 Table 3: 24-hour lighting heat gain and RTF values for a LW-zone RTF-LW zone Hour Lighting heat gain (W) Го 0.50619 1 250 0.22962 2 250 0.11864 3 250 4: 250 0.06390 0.03533 0.01989 5: 250 :6: 250 0.01134 7 250 0.00653 8 2500 0.00380 9 2500 0.00222 10 2500 0.00131 :11; 2500 0.00079 12 2500: 0.00048 13 2500 0.00030 14: 2500 0.00020 15 2500 0.00014 : 16: 2500 0.00010 17 2500 0.00008: 18 : 2500 0.00007 19 250 0.00006 20 : 250 0.00006 21: 250 0.00005 22 250 0.00005 23 250 0.00005 24 250 ₁ √₂ ------- 3 25 rs T6 n Ta T9 10 11: 12 Г13 14 [15: 16 [17 18: 19: 20: T21 22 23