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Posted: **Tue Jun 07, 2022 1:24 pm**

: Table 8 21 Radiant Time Factors For Four Sam Mw 2 Mw 1 Lw 0 25509 0 51669 0 50619 To 0 11396 0 22962 0 20833 0 06959 1 (181.21 KiB) Viewed 35 times

: Table 8 21 Radiant Time Factors For Four Sam Mw 2 Mw 1 Lw 0 25509 0 51669 0 50619 To 0 11396 0 22962 0 20833 0 06959 2 (181.21 KiB) Viewed 35 times

: Table 8 21 Radiant Time Factors For Four Sam Mw 2 Mw 1 Lw 0 25509 0 51669 0 50619 To 0 11396 0 22962 0 20833 0 06959 3 (42.08 KiB) Viewed 35 times

Table 8-21 Radiant Time Factors for Four Sam MW 2 MW 1 LW # 0.25509 0.51669 0.50619 To 0.11396 0.22962 0.20833 " 0.06959 0.11864 0.10846 72 0.06232 0.05133 0.06390 0.03785 0.04259 0.03533 0.01989 0.02373 0.03771 0.01134 0.01515 0.03461 0.00653 0.00977 0.03241 0.00380 0.00634 0.03071 0.00222 0.00413 0.02931 0.00131 0.00270 0.02809 0.00079 0.00177 0.02700-- 0.00048 0.00117 0.02598 0.00030 0.00078 0.02504 0.00020 0.00052 0.02414 0.00014 0.00036 0.02328 0.00010 0.00025 0.02246 0.00008 0.00018 0.02167 0.00007 0.00013 0.02091 0.00006 0.00010 0.02018 0.00006 0.00008 0.01948 0.00005 0.00007 0.01880 0.00005 0.00006 0.01815 0.00005 0.00005 0.01751 TA T5 76 T7 rg Tg 10 T11 12 13 14 15 16 17 718 19 20 21 122 23

Table 8-21 Radiant Time Factors for Four Sam MW 2 MW 1 LW # 0.25509 0.51669 0.50619 To 0.11396 0.22962 0.20833 " 0.06959 0.11864 0.10846 72 0.06232 0.05133 0.06390 0.03785 0.04259 0.03533 0.01989 0.02373 0.03771 0.01134 0.01515 0.03461 0.00653 0.00977 0.03241 0.00380 0.00634 0.03071 0.00222 0.00413 0.02931 0.00131 0.00270 0.02809 0.00079 0.00177 0.02700-- 0.00048 0.00117 0.02598 0.00030 0.00078 0.02504 0.00020 0.00052 0.02414 0.00014 0.00036 0.02328 0.00010 0.00025 0.02246 0.00008 0.00018 0.02167 0.00007 0.00013 0.02091 0.00006 0.00010 0.02018 0.00006 0.00008 0.01948 0.00005 0.00007 0.01880 0.00005 0.00006 0.01815 0.00005 0.00005 0.01751 TA T5 76 T7 rg Tg 10 T11 12 13 14 15 16 17 718 19 20 21 122 23

5. If a zone of type MW2 from Table 8-21 has a total lighting gain of 2500 W. The zone has two type of lighting systems 2000 W of suspended fluorescent unvented lights (67% radiative and 33% convective) and 500 W of incandescent lights (80% radiative and 20% convective). All lights are turned on daily for 9 hours from the beginning of 8th hour till the end of the 17th hour while the building is in use. During non-use hours all lights are turned off. Apply radiant time series method (RTSM) and calculate the total lighting load for the 10th and the 20th hour. Hour Lights Hour Lights Hour Lights Hour Lights 1 Off Off 13 ON 19 Off 2 Off 8 ON 14 ON 3 Off 9 ON ON Off 4 ON ON 10 5 ON 11 Off ON ON 6 12 Off H5678 15 16 18 Off 20 21 22 23 24 Off Off Off Off Off