General office lighting visibility specifications were analyzed with respect to optimization of cost effectiveness. Cost effectiveness is a function of visual performance, not visibility per se. It was found that the present procedures which utilize ESI are not readily adaptable to cost optimization calculations. An alternative procedure using log VL is presented which appears suitable for this use. A sample calculation of net benefits versus light level is presented. For the same calculation the net benefits from visibility saturate at lower levels of visibility than are normally prescribed for office environments.
BT - Illuminating Engineering Society Annual Technical Conference C1 -Lighting Systems Group
C2 - LBL-10514 CN - LBL-10514 CY - Dallas, TX DA - 08/1980 LA - eng N2 -General office lighting visibility specifications were analyzed with respect to optimization of cost effectiveness. Cost effectiveness is a function of visual performance, not visibility per se. It was found that the present procedures which utilize ESI are not readily adaptable to cost optimization calculations. An alternative procedure using log VL is presented which appears suitable for this use. A sample calculation of net benefits versus light level is presented. For the same calculation the net benefits from visibility saturate at lower levels of visibility than are normally prescribed for office environments.
PP - Dallas, TX PY - 1980 T2 - Illuminating Engineering Society Annual Technical Conference T3 - Illuminating Engineering Society Annual Technical Conference TI - Cost Effectiveness of Visibility-Based Design Procedures for General Office Lighting ER -