learn.howToCalculate
learn.whatIsHeading
Daylight factor measures indoor daylight availability as percentage of outdoor illuminance. It determines whether artificial lighting is required.
공식
Daylight factor = (indoor illumination / outdoor illumination) × 100%
단계별 가이드
- 1Daylight factor = (indoor illumination / outdoor illumination) × 100%
- 2Values: <2% (supplementary lighting needed), 2-5% (adequate), >5% (well-lit)
- 3Depends on window size, orientation, obstruction
풀어진 예시
입력
Indoor illumination 100 lux, outdoor 5000 lux
결과
Daylight factor = 2% (borderline, likely needs supplementary lighting)
Typical office
피해야 할 일반적인 실수
- ✕Over-sizing windows in climate with high cooling loads
- ✕Neglecting glare control in high daylight factor spaces
자주 묻는 질문
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.
계산할 준비가 되셨나요? 무료 Daylight Factor 계산기를 사용해 보세요
직접 시도해 보세요 →