Lighting Energy Management: In the case of road lightings in Negara Brunei Darussalam

Name: Pengiran Shamsuddin

Organization : King Mongkut's University of Technology Thonburi. The Joint Graduate School of Energy and Environment. Energy Technology

keyword: Energy consumption

; Energy conservation

; Brunei

Abstract: The sudden growth in the consumption of lighting energy for road lightings in Brunei Darussalam between the year 1994 to 1996, has caused concern to the Department of Electrical Services (DES), being an organization who is responsible for the operation and maintenance of all road lightings throughout the country. This study is therefore an attempt to find a solution on how to manage the current consumption of lighting energy from road lightings for the country. Flux regulation technique employing a 3-phase, 40 amperes flux regulator had been used in performing Energy Conservation Measure (ECM) to the road lightings involved at three trial sites throughout the study. A total number of seventy-four, 400 watts road lightings involving twenty-two lightings from Gadong Road (urban area), twenty-six from Menteri Besar Road (intermediate area) and another twenty-six more lightings from Muara Road (suburban area) had been involved in the energy-saving study. The research study had shown that, the benefit on the lighting energy management of road lightings can be demonstrated through the use of the method where, significant amount of energy savings from the research field sites had been realized from it. As much as 31.3 percent, 20.5 percent and 38.7 percent of lighting energy can be saved from the lightings at Gadong Road, Menteri Besar Road and Muara Road respectively with a percentage illumination's reduction of 43.9 percent, 35.0 percent and 52.6 percent had been recorded. The study from Gadong Road site had noted that, a 1 percent reduction in the voltage will cause a 1.7 percent in the reduction of energy consumption and also a 2.5 percent reduction in the illumination and these observations were found to be consistent with the findings from the earlier preliminary studies. Results also showed that, the percentage of illumination's reduction for lightings at different heights varied in similar trend regardless of the lightings' heights. The economic benefit of the method used can be realized by utilizing at least 87.6 percent of the maximum installed capacity of the flux regulator and also by increasing ECM's operating hours. Results in the study had shown that, the method showed positives NPV (Net Present Value) at the end of 10 years of the equipment's operation in field for Muara site where an NPV of B$5,261.67 with an Investment Return Rate (IRR) of 121 percent will be accrued when ECM's operation was carried out for the entire lighting hour period at the site. As much as 80.1 tonnes of C02 per annum can be reduced from an annual energy-savings of 5,976 kWh at Muara site. On the assessment of the reduced illumination as made by roadusers, only 26 percent of the 438 correspondents interviewed had found the idea of having the energy consumption and lighting's illumination level reduced to be good. 20 percent of them had found it to be bad whereas, 54 percent were left undecided. However, the reduced illumination at field sites was assessed in a professional manner based from the reference standard as laid by IES besides, it is pointless to further reduce the level of voltage operation at field sites other than the minimum as applied as, this will cause the quality of illumination to be poorer and to deviate away from the reference illumination standard as laid. The study concludes that flux regulation is seen to be an effective method to manage the lighting energy consumption of road lightings in Brunei Darussalam and therefore, viable to be implemented.

King Mongkut's University of Technology Thonburi. Library

Address: Bangkok

Email: info.lib@mail.kmutt.ac.th

Name: Ake Chaisawadi

Role: Advisor

Created: 2004

Modified: 2008-02-29

CallNumber: JGSEE86

eng

Spatial: Brunei

DegreeName: Master of Science

Level: Master's Degree

Descipline: Energy Technology

Grantor: King Mongkut's University of Technology Thonburi

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