Question
The front of a building 50 m x 16 m is illuminated by fifteen 700-W lamps arranged so that uniform illumination on the surface is
The front of a building 50 m x 16 m is illuminated by fifteen 700-W lamps arranged so that uniform illumination on the surface is obtained. Assuming a luminous efficiency of 17.4 lumens/watt and a coefficient of utilization of 0.4, assume depreciation factor 1.3 and waste light factor 1.4, determine the illumination on the surface.
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Fundamentals of Thermodynamics
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
6th edition
471152323, 978-0471152323
