Obtaining Outdoor Illuminance Values with Solar Irradiation Transformation Models

Daylighting is one of the important aspects of sustainable building, but architectural daylighting in China is obstructed because of shortage of daylight meteorological measurement record. However, there are many data of solar irradiation. Therefore solar irradiance values are used to calculate outdoor illumination values. Luminous efficacy is introduced to show the relation between solar irradiance and outdoor illumination. Sunny index is used to represent the meteorological states of the sky. On the basis of measurement data in Chongqing from 1991 to 1992, new luminous efficacy calculation model is built to obtain the outdoor global illuminance values and the diffuse illuminance values. Measurement data in Chongqing in 1993 is used to evaluate the proposed mode, which shows the proposed models are reliable. In order to prove possibility of calculating illuminance in other places in China, the measurement data records of annually average global illuminance values in 32 cites are used to examine the calculation results. If the real-time solar irradiation data was input, the real-time illuminance values could be obtained with this model in China, thus millions of illuminance values could be used in future daylighting design.     

日光温室水果黄瓜岩棉椰糠复合基质高效栽培技术

为了解决当前土壤种植条件下土壤病原菌富集、盐分积累、土壤酸化等问题,本文总结了日光温室水果黄瓜岩棉椰糠复合基质高效栽培技术,包括日光温室准备、基质栽培系统构建、品种选择、育苗、栽培管理、吊蔓整枝、采收、采后处理等方面内容,以期实现水果黄瓜的周年无障碍生产,达到效益提升的目的。     

兔舍采光效果设计方案

为了建筑自然采光效果好的兔舍 ,提高舍养家兔的饲养效果 ,并添补家畜环境卫生方面的空白 ,以一定纬度 (北纬 4 1°19′)地区为例 ,设计了一种自然采光兔舍。其自然采光系数为 1:2 0 5 ,透光角为 31°2 3′ ,光线入射跨度为 1 0 0～ 4 5 8m ;入射角为 4 3°30′ ,71°2 7′。