daylight factor

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factor, daylight

The ratio of daylight illuminance received at a given point inside a room to the simultaneous illuminance on a horizontal plane outside exposed to an unobstructed sky. It is usually expressed as a percentage, 5% or more being considered a well-lit room.

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No references found			Reductions in lighting consumption are awarded for increasing daylight factors; a 20% reduction is available for a daylight factor greater than 10%, a 10% reduction available for a factor greater than 5%, and a 5% reduction available for a factor greater than 2%. Post-occupancy performance of five low-energy schools in the UK by Pegg, I.M.; Cripps, A.; Kolokotroni, M. / ASHRAE Transactions Our proposal suggested a roof-lit building that would provide good natural lighting with a minimum daylight factor of 5 per cent. Light work: following on from his thoughts in Peter Davey's ... by Fordham, Max / The Architectural Review This study shows that toplighting systems designed to meet a 2% daylight factor are not optimal. Optimal daylight factor for energy-efficient toplighting system by Yoon, Younju; Moeck, Martin; Bahnfleth, William P.; Mistrick, Richard G. / ASHRAE Transactions			Daviel's operation Davis Davis forceps Davis ureterotomy Davis v. Davis Davison-Danielli membrane model DAWN Dawn Phenomenon day day blindness day care day care center Day Care Diarrhea Day Care Diarrhoea day health care services day hospital day length day lily day patient day sheet day sight Day's syndrome day-blooming jessamine day-old chicks daydream daylight factor daylight loader method days open Days per Thousand Dazamide dazzle response dB DBMS DBS DC DCA DCAD DCC gene DCIS DCR DCT DD DD Palmer DDAVP ddC DDD pacing DDDR ddI DDP DDS DDST			DAYFL dayflower dayflower Dayflowers Dayflowers dayfly dayfly daygirl Dayglo Dayglo DayGlo Fishermen dayglow DAYHA dayhop Dayjob DAYL DAYLE Daylength Daylesford Football Netball Club Daylesford Secondary College Daylesford Spa Country Railway daylight daylight daylight daylight Daylight (sunlight) Daylight (sunlight) Daylight Cinema daylight controls Daylight Demon Eyes daylight factor Daylight filter daylight glass daylight hours Daylight Imaging System daylight lamp daylight lamp daylight loader method daylight opening Daylight Overdraft Reporting and Pricing System Daylight Robbery Daylight Robbery daylight saturation level daylight saving daylight saving daylight saving meridian daylight saving noon Daylight saving time Daylight saving time Daylight saving time daylight savings daylight savings daylight savings Daylight savings time Daylight savings time Daylight time Daylight Video Sight Daylight Viewable LCD daylight vision Daylight Visual Observation daylight width

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