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Spreadsheet-based calculation tool for direct daylight illuminance adaptable for different glazing properties and sky models

机译：基于电子表格的直接日照度计算工具，适用于不同的玻璃特性和天空模型

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摘要

The methods normally used to calculate daylight illuminance of rooms are limited in their capacity to model different sky luminance distributions and different window glazing properties. A spreadsheet-based model is presented in this paper using first-principle calculations, which allows for a free choice of sky luminance distribution and glazing material properties. The glazing is specified in terms of material refractive index, absorption coefficient and thickness, and may be either single or double glazed. The calculations need to be repeated for each of a large number of small elements of window area, which is easily achieved using a spreadsheet. Use is illustrated by comparing the calculation of sky components with standard published data, and demonstrating the effect of substituting double for single glazing. The model was developed for educational use, but would also be useful for designers who need to investigate quickly the effect of altering glazing properties and sky conditions, without recourse to specialist software.
机译：通常用于计算房间日照度的方法在模拟不同的天空亮度分布和不同的玻璃窗特性方面的能力受到限制。本文使用第一性原理计算提出了一个基于电子表格的模型，该模型允许自由选择天空的亮度分布和玻璃材料的特性。玻璃窗是根据材料的折射率，吸收系数和厚度来指定的，可以是单层或双层玻璃。需要对窗口区域的大量小元素中的每一个重复计算，这可以使用电子表格轻松实现。通过将天空分量的计算与标准发布的数据进行比较，并证明用双层玻璃代替单层玻璃的效果，可以说明使用情况。该模型是为教育用途而开发的，但对于需要快速调查改变玻璃性质和天空条件的影响而无需求助于专业软件的设计人员而言，该模型也很有用。

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