生産性を考慮に入れた照明経済
経済照度の算出
1971 年 55 巻 10 号 p. 601-606
詳細
1971 年 55 巻 10 号 p. 601-606
Generally, study of economical illumination is not considering productivity by lighting improvement, therefore, these studies are fear to digress from the actual conditions.
Relations of Illumination Levels E as exponential function and Productivity P introducing from psychometrics and econometrics in behavioral sciences, are followed.
P=klogE+α
where, k and α: coefficients
Coefficient k and α are indroduced from various seeing tasks
ksinθ+αcosθ=0Q
where, θ and OQ: coefficients
Generally, θ=70° and OQ=42 for various seeing tasks in Past experiments.
Economical illumination levels of industrial lighting are introduced
E (logE+123.5/k-3.77) =B/k2
where, B: fixed charge (yen/day), k2: lighting cost (yen/day).
