1.

Considering the total heat losses fromall fluorescent lamps to be 79%, the Heating load (Btu/hr) due to office illumination with 48 ceiling mounted luminaires, each containing four 40 W fluorescent lamps and flat surface diffusers will be

A. 10000 Btu/hr
B. 15000 Btu/hr
C. 17500 Btu/hr
D. 21000 Btu/hr
Answer» C. 17500 Btu/hr


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