Evaluation of quality of light and energy-efficiency for lighting systems in high schools in Ahvaz city

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Azadi Narges; Boroun Razieh; HAJIBABAEE MAJID

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Journal: IRAN OCCUPATIONAL HEALTH JOURNAL Year:2016 | Volume:13 | Issue:3 Page(s): 24-32

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Title

Evaluation of quality of light and energy-efficiency for lighting systems in high schools in Ahvaz city

Author(s)

Azadi Narges | Boroun Razieh | HAJIBABAEE MAJID | Issue Writer Certificate

Keywords

High schoolQ2

Energy efficiency systemsQ2

Lighting systemsQ2

Abstract

Background and aims: Good quality lighting should make a balance between the needs of humans and economic and environmental issues, and create suitable lighting for particular visual activities like to reading, writing, etc. Quality lighting is very important to increase productivity and learning ability of students. The main idea of energy-efficient lighting is to reduce the amount of electricity used without compromising on the quality of lighting. The first objective of the work was to assess different aspects of lighting quality and energy efficiency and the second objective was to find out ways to improve the efficiency of electric lighting in High school. Methods: This cross-sectional study was conducted in 11 High schools for girls in Ahvaz. In this regard, based on measured artificial light (lux) and electrical power consumption (w/m2), Installed power density (IPD) (w/m2. 100 lux) was calculated. Normalized power density (NPD) divided by IPD to compute installed load efficiency ratio (ILER) and performance index classified into three categories. Data were analyzed using unilateral variance analysis test through SPSS v. 16. Results: The results show that from all areas measured, 47. 6% was at level 3, 36. 1% at level 2 and 16. 2% at level 1. Maximum efficiency is reported for three High schools (3, 5, 8). Conclusion: In this study, low efficiency and high energy consumption of Lighting systems were identified as the results from defects such as reflection coefficients less than the standard (walls 0. 5, ceiling 0. 7 and floor at least 0. 3), using conventional ballasts instead of electronic ballasts, low-efficiency lamps, conventional reflectors instead of steel, and lack of proper use of daylight.

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APA: Copy

Azadi, Narges, Boroun, Razieh, & HAJIBABAEE, MAJID. (2016). Evaluation of quality of light and energy-efficiency for lighting systems in high schools in Ahvaz city. IRAN OCCUPATIONAL HEALTH JOURNAL, 13(3 ), 24-32. SID. https://sid.ir/paper/128990/en

Vancouver: Copy

Azadi Narges, Boroun Razieh, HAJIBABAEE MAJID. Evaluation of quality of light and energy-efficiency for lighting systems in high schools in Ahvaz city. IRAN OCCUPATIONAL HEALTH JOURNAL[Internet]. 2016;13(3 ):24-32. Available from: https://sid.ir/paper/128990/en

IEEE: Copy

Narges Azadi, Razieh Boroun, and MAJID HAJIBABAEE, “Evaluation of quality of light and energy-efficiency for lighting systems in high schools in Ahvaz city,” IRAN OCCUPATIONAL HEALTH JOURNAL, vol. 13, no. 3 , pp. 24–32, 2016, [Online]. Available: https://sid.ir/paper/128990/en

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