An office has length of 30m, width = 12m and a clear height of 3.5m. - Mounting Height = 0.7m - Area to be illuminated to a general lighting is 250 lux using twin lamp 32-watt CFL luminaire. - Each lamp has an initial output of 85 lumen per watt - Maintenance factor is 0.70 and utilization factor is 0.75 Design a lighting system for the office. a. Determine the number of twin lamp 32-watt CFL luminaires

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
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ISBN:9781337399128
Author:Russell E. Smith
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Chapter17: Commercial And Industrial Air-conditioning Control Systems
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Lumen method

An office has length of 30m, width = 12m and a clear height of 3.5m.
- Mounting Height = 0.7m
- Area to be illuminated to a general lighting is 250 lux using twin lamp 32-watt CFL luminaire.
- Each lamp has an initial output of 85 lumen per watt
- Maintenance factor is 0.70 and utilization factor is 0.75
Design a lighting system for the office.
a. Determine the number of twin lamp 32-watt CFL luminaires
Transcribed Image Text:An office has length of 30m, width = 12m and a clear height of 3.5m. - Mounting Height = 0.7m - Area to be illuminated to a general lighting is 250 lux using twin lamp 32-watt CFL luminaire. - Each lamp has an initial output of 85 lumen per watt - Maintenance factor is 0.70 and utilization factor is 0.75 Design a lighting system for the office. a. Determine the number of twin lamp 32-watt CFL luminaires
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