Abstract
Appropriate day lighting design saves lighting power energy (LPE) and reduces LPE cost. This research investigates daylight contribution of in selected north campus lecture theaters in a South West Coast University of Nigeria. TES 1332A lux meter was used for lux level determination. The window area to wall area (AWD to AW) ratio was determined using reliable algorithms. In the three studied buildings, the daylight contribution varies from 12 lux to 3803 lux; AWD to AW varies from 14 % to 22 % to 37 %; 22 % AWD to AW is considered moderate while 37 % AWD to AW is considered more suitable in the studied buildings.
Highlights
Daylight is a significant, comfortable, and natural energy that contribute to passive solar building design [1]
The article [27] revealed that energy savings can be maximized by utilizing daylight source of energy in lighting design for classrooms, libraries, lecture theaters and offices buildings that are mainly occupied during the day
The daylight contribution is a function of light entering the interior of building; vi
Summary
Comfortable, and natural energy that contribute to passive solar building design [1]. Buildings that utilize daylight with lighting control system to maintain light level in the interior space are estimated to reduce electric lighting energy consumption by 50–80 % [5]. The major source of electricity production for mechanical equipment operation accounts to the increase in greenhouse negative effect of global warming [6] It is characterized by higher cost in comparison with natural lighting. The article [27] revealed that energy savings can be maximized by utilizing daylight source of energy in lighting design for classrooms, libraries, lecture theaters and offices buildings that are mainly occupied during the day. In order to enjoy daylight problem of the associated heat need to be control [30]
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