Case Study of Quantifying Energy Loss through Ceiling-Attic Recessed Lighting Fixtures through 3D Numerical Simulation

Na, Ri; Lin, Shengmao; Shen, Zhigang; Gu, Linxia

doi:10.1061/(asce)ae.1943-5568.0000226

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…In China for example, the power consumption due tolighting is estimated to account for approximately 13% of the total [3]. Lighting fixturesarealso identified as one of the main causes of extra energy consumption [4]. Thus, selecting an efficient lighting system design, or replacing existing one, is a crucial and a complex process for decision makers.…”

Section: Introduction and Objective Of The Workmentioning

confidence: 99%

Analytic Hierarchy Process & Multi Attribute Utility Theory Based Approach for the Selection of Lighting Systems in Residential Buildings: A Case Study

2018

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This paper presents an approach developed for selecting lighting systems in residential buildings using an Analytic Hierarchy Process (AHP) and the Multi Criteria Decision Making Technique (MCDMT). The developed approach considers four selection criteria of lighting systems: life-cycle cost, illumination, environmental performance, and life-span. The criteria of selection, along with the most widely used lighting systems in residential buildings, were determined through questionnaire surveys with suppliers, maintenance managers, and lighting experts. The Analytic Hierarchy Process and Multi Attribute Utility Theory were utilized to assess the significant influence of the identified main and sub-criteria on the selection process, from the design point of view. The developed approach was tested on a real case project in selecting the lighting system for aresidential building in Saudi Arabia. The obtained results show that the life-cycle cost and illumination proprieties, followed by the service life were found to be the most influential measures in the selection process. The results also show that Light-Emitting Diode(LED) lighting systems prove to bear the highest initial cost while sustaining the best overall performance.in finalizing the selection of a lighting system forongoing projects can cause cost-effective projects to waste time and money. Delays and/or cost overruns affect business portfolios, since theyleads to delays in other activities, and cause disruptions inthe projects globally.The selection of a new lighting system, or replacing an old one, is usually carried out based on personal experience, and is therefore not subject to the needs and constraints that actually govern the selection of the best system based on the evaluation of performance against certain measures.The literature reveals that over the years, a wide range of methods and techniques havebeen introduced to facilitate the selection process where multi criteria of selections are considered. There are several studies in the literature for selecting lighting systems in buildings. Most of these studies have focused on technical aspects of the selection, such as efficiency, safety, visual comfort, satisfaction, and energy consumption, etc. e.g., [3,5,6].Since its introduction in 1980s, AHP alone, or combined with other techniques, has beenextensively utilized to facilitate the selection process in many complex applications in the building industry. AHP divides a complicated problem into a simple and manageable hierarchy of factors [3]. For example, in selecting lighting systems, [7] proposed an AHP-based framework which consists of various criteria for the installation of the median barriers for national highways. The selection criteria considered in the study were regional equity, safety, efficient economy, and installation possibilities, while giving high priority to safety. Lv et al. [3] also introduced an AHP-based evaluation system for an efficient lighting project. The system accounts for public policies combined with evaluation facto...

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Section: Introduction and Objective Of The Workmentioning

confidence: 99%

Analytic Hierarchy Process & Multi Attribute Utility Theory Based Approach for the Selection of Lighting Systems in Residential Buildings: A Case Study

2018

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“…Another aspect of building envelope control layers that affects energy performance is air tightness, not only for the exterior envelope systems but also any penetration in the floors and ceiling that may allow air leakage eventually through the envelope. Accordingly, measures must be taken to ensure that any plumbing, electrical, and HVAC-related penetrations, as well as light fixtures (Na et al 2017) are all properly sealed to prevent air leakage. Besides highly energy-efficient HVAC, lighting systems, and appliances, as well as building envelope systems equipped with appropriate thermal insulation and airtightness, which are all parameters of a highperformance building, still other measures that will help minimize energy consumption include passive solar design strategies (McDonald and Chakradhar 2017) and use of renewable energy sources.…”

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confidence: 99%