Daylight Factor ની ગણતરી કેવી રીતે કરવી
Daylight Factor શું છે?
Daylight factor measures indoor daylight availability as percentage of outdoor illuminance. It determines whether artificial lighting is required.
સૂત્ર
Daylight factor = (indoor illumination / outdoor illumination) × 100%
પગલું દ્વારા પગલું માર્ગદર્શિકા
- 1Daylight factor = (indoor illumination / outdoor illumination) × 100%
- 2Values: <2% (supplementary lighting needed), 2-5% (adequate), >5% (well-lit)
- 3Depends on window size, orientation, obstruction
Worked Examples
ઇનપુટ
Indoor illumination 100 lux, outdoor 5000 lux
પરિણામ
Daylight factor = 2% (borderline, likely needs supplementary lighting)
Typical office
Common Mistakes to Avoid
- ✕Over-sizing windows in climate with high cooling loads
- ✕Neglecting glare control in high daylight factor spaces
Frequently Asked Questions
Does orientation affect daylight factor?
Significantly; south-facing windows get stable light, north-facing less direct but more diffuse.
How do you improve daylight factor?
Increase window area, use reflective interior surfaces, reduce obstructions, add skylights.
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