统一眩光值

附录A统一眩光值（UGR）A.0.1室内照明场所的统一眩光值（UGR）计算应符合下列规定:1当灯具发光部分面积为0.005m2 S 1.5m2时，统一眩光值（UGR）应按下列公式进行计算:UGR = 81g %LP 2bL a ApAW Pr 2A.0. 1-1)A.0.1-2)A.0.1-3)式中：Lb 一一背景亮度（cd/m2）；co每个灯具发光部分对观察者眼睛所形成的立体角（图A.0.1-1a） （sr）； P 一一 每个单独灯具的位置指数；L 一一 灯具在观察者眼睛方向的亮度（图 A.0.1-1b）（cd/m2）；aI 一一灯具发光中心与观察者眼睛连线方向的灯具发光强度（cd）；aA 一一灯具发光部分在观察者眼睛方向的表观面积（m2）；pr 灯具发光部分中心到观察者眼睛之间的距离（m）。（a）灯具与观察者关系示意图（b）灯具发光中心与观察者眼睛连线方向示意图图 A.0.1-1 统一眩光值计算参数示意图1灯具发光部分；2观察者眼睛方向； 3灯具发光中心与观察者眼睛连线；4观察者；5灯具发光表面法线2对于发光部分面积小于0.005m2的筒灯等光源，统一眩光值应按下列公式进行计算：UGR = 8lg0.25Lb200I2o. r 2 - P 2A.0. 1-4)LbEi兀A.0.1-5)A.0.1-6)I 二 L - A - cosooo式中：L 一一背景亮度（cd/m2）；bI 一一灯具发光中心与观察者眼睛连线方向的灯具发光强度（cd）；ar 每个灯具发光部分与观察者眼睛之间的距离（m）；P 一一每个单独灯具的位置指数，位置指数应按图A.0.1-2生成的H/R和T/R坐标系 及由表 A.0.1 确定；E.观察者眼睛方向的间接照度（lx）；iAcosa灯具在观察者眼睛方向的投影面积（m2）；a 一一灯具表面法线与其中心和观察者眼睛连线所夹的角度（）。图A.0.1-2以观察者位置为原点的位置指数坐标系统（R, T，H）1灯具中心；2视线；3水平面；4观测者T/R 0.000.100.200.300.400.500.600.700.800.901.001.101.201.301.400.001.001.261.531.902.352.863.504.205.006.007.008.109.2510.3511.7010.101.051.221.451.802.202.753.404.104.805.806.808.009.1010.3011.6010.201.121.301.501.802.202.663.183.884.605.506.507.608.759.8511.2010.301.221.381.601.872.252.703.253.904.605.456.457.408.409.5010.8510.401.321.471.701.962.352.803.303.904.605.406.407.308.309.4010.6010.501.431.601.822.102.482.913.403.984.705.506.407.308.309.4010.5010.601.551.721.982.302.653.103.604.104.805.506.407.358.409.4010.5010.701.701.882.122.482.873.303.784.304.885.606.507.408.509.5010.5010.801.822.002.322.703.083.503.924.505.105.756.607.508.609.5010.6010.901.952.202.542.903.303.704.204.755.306.006.757.708.709.6510.7511.002.112.402.753.103.503.914.405.005.606.207.007.908.809.7510.8011.102.302.552.923.303.724.204.705.255.806.557.208.159.009.9010.9511.202.402.753.123.503.904.354.855.506.056.707.508.309.2010.0011.0211.302.552.903.303.704.204.655.205.706.307.007.708.559.3510.2011.2011.402.703.103.503.904.354.855.355.856.507.258.008.709.5010.4011.4011.502.853.153.654.104.555.005.506.206.807.508.208.859.7010.5511.5011.602.953.403.804.254.755.205.756.307.007.658.409.009.8010.8011.7511.703.103.554.004.504.905.405.956.507.207.808.509.2010.0010.8511.8511.803.253.704.204.655.105.606.106.757.408.008.659.3510.1011.0011.9011.903.433.864.304.755.205.706.306.907.508.178.809.5010.2011.0012.0012.003.504.004.504.905.355.806.407.107.708.308.909.6010.4011.1012.0012.103.604.174.655.055.506.006.607.207.828.459.009.7510.5011.2012.1012.203.754.254.725.205.606.106.707.358.008.559.159.8510.6011.3012.1012.303.854.354.805.255.706.226.807.408.108.659.309.9010.7011.4012.2012.403.954.404.905.355.806.306.907.508.208.809.4010.0010.8011.5012.2512.504.004.504.955.405.856.40.6.957.558.258.859.5010.0510.8511.5512.3012.604.074.555.055.475.956.457.007.658.358.959.5510.1010.9011.6012.3212.704.104.605.105.536.006.507.057.708.409.009.6010.1610.9211.6312.3512.804.154.625.155.566.056.557.087.738.459.059.6510.2010.9511.6512.3512.904.204.655.175.606.076.577.127.758.509.109.7010.2310.9511.6512.3513.004.224.675.205.656.126.607.157.808.559.129.7010.2310.9511.6512.351A.0.2统一眩光值（UGR）的应用条件应符合下列规定：1 UGR 适用于简单的立方体形房间的一般照明装置设计，不适用于采用间接照明和发 光天棚的房间；2 灯具为双对称配光；3坐姿观测者眼睛的高度通常取1.2 m,站姿观测者眼睛的高度通常取1.5m；4 观测位置一般分别在纵向和横向两面墙的中点，视线水平朝前观测；5房间表面为大约高出地面0.75 m的工作面、灯具安装表面以及此两个表面之间的墙 面。