An evaluation of classroom-illumination: a critical requirement for effective designing and construction of naturally-illuminated schools in Nigeria

Q1 Economics, Econometrics and Finance Progress in Industrial Ecology Pub Date : 2019-09-03 DOI:10.1504/pie.2019.10023633

O. Ibhadode, O. Ajayi, A. Abioye, Joseph Ismaila, A. Adekunle

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引用次数: 7

Abstract

Indoor lighting-levels (illuminances) of 180 classrooms in 60 public [primary and secondary] schools located in all six geopolitical zones of Nigeria, were experimentally investigated 12 times under three different sky-conditions ['clear', 'partly-clear' and 'overcast'] using the Hagner digital lux-meter. The analysed empirical-data were: 'Mean indoor illuminance for tasks on desks' tops near windows exposed to direct sunlight and/or higher illumination(Ld(DSL))' ranging from 1,243 lux-4,486 lux, 'Mean indoor illuminance for tasks on desks' tops near windows exposed to indirect sunlight and/or lower illumination(Ld(ISL))' ranging from 674 lux-2,987 lux, 'Mean indoor illuminance for tasks on desks' tops at Center of Classroom(Ld(CrC))' ranging from 101 lux-449 lux and 'Mean indoor illuminance for tasks on boards(Lb)' ranging from 110 lux-494 lux. Three globally recommended standards' ['CIE-ISO', 'IESNA', and 'EN'], values [of minimal/optimal lighting-levels for classroom-activities like 'reading on the blackboard' (Lsb 500 lux) and 'writing, drawing and reading on desks' (Lsd = 300 lux)]; and the follow-up statistical-analyses reveal 'excessive solar irradiation' and/or 'inadequate illumination' in the classrooms.

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教室照明评估:尼日利亚自然照明学校有效设计和建设的关键要求

在尼日利亚所有六个地缘政治区域的60所公立[小学和中学]的180间教室的室内照明水平(照度)，使用Hagner数字亮度计在三种不同的天空条件下(“晴朗”，“部分晴朗”和“阴天”)进行了12次实验研究。分析的实证数据为:“办公桌上靠近窗户、暴露在阳光直射和/或较高照度的工作的平均室内照度(Ld(DSL))”范围为1,243 lux-4,486 lux，“办公桌上靠近窗户、暴露在间接阳光和/或较低照度的工作的平均室内照度(Ld(ISL))”范围为674 lux-2,987 lux，“教室中央课桌上作业的平均室内照度(Ld(CrC))”范围从101勒克斯到449勒克斯，“板子上作业的平均室内照度(Lb)”范围从110勒克斯到494勒克斯。三个全球推荐的标准[CIE-ISO, IESNA和EN]，教室活动的最小/最佳照明水平值，如“在黑板上阅读”(Lsb 500勒克斯)和“在桌子上书写，绘画和阅读”(Lsd = 300勒克斯);随后的统计分析显示，教室里“太阳照射过度”和/或“照明不足”。

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来源期刊

Progress in Industrial Ecology Economics, Econometrics and Finance-Economics, Econometrics and Finance (all)

CiteScore

1.10

自引率

0.00%

发文量

期刊介绍： PIE contributes to international research and practice in industrial ecology for sustainable development. PIE aims to establish channels of communication between academics, practitioners, business stakeholders and the government with an interdisciplinary and international approach to the challenges of corporate social responsibility and inter-organisational environmental management.