The following Table.1 gives the watts and lumens; 300 5000 Watts 500 1000 1500 Lumens 9000...
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The following Table.1 gives the watts and lumens; 300 5000 Watts 500 1000 1500 Lumens 9000 18000 27000 Table.1 The front of the building measuring 50 m and 25 m is to be floodlighted by means of projectors placed at a distance of 8 m from the wall. The average illumination required is 70 lux. Determine the total lumens required to be given out by lamps. Assume waste light factor of 1.4, depreciation factor 0.8 and coefficient of utilization 0.5. The following Table.1 gives the watts and lumens; 300 5000 Watts 500 1000 1500 Lumens 9000 18000 27000 Table.1 The front of the building measuring 50 m and 25 m is to be floodlighted by means of projectors placed at a distance of 8 m from the wall. The average illumination required is 70 lux. Determine the total lumens required to be given out by lamps. Assume waste light factor of 1.4, depreciation factor 0.8 and coefficient of utilization 0.5.
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Burlding th 50m Width 25m 9 8m the wall Required 7o lux Dimensio... View the full answer
Related Book For
Fundamentals of Momentum, Heat and Mass Transfer
ISBN: 978-1118947463
6th edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
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