Weightage Evaluation Criteria for Daylight Retrofitting in Existing Campus Buildings

Authors

  • Nur IzieAdiana Abidin, Rozana Zakaria

Abstract

Artificial lighting in buildings is one of the major sources of energy that generates a large amount of CO2. The use of light energy globally is expected to increase to more than 40% by 2020. Hence, daylight retrofitting is one of the strategies that can be implemented to improve the existing lighting conditions. However, the implementation of daylight retrofitting requires a thorough consideration to ensure that the desired outputs such as the quality and quantity of daylight, energy reduction, and low implementation costs are achieved upon completion. In this study, several criteria for the daylight retrofitting of existing buildings in higher learning institutions were developed based on visual comfort, indoor comfort, design, economic, resource availability, and environmental factors. This study aims to provide an overview of the information needed to improve energy efficiency in existing buildings, thus contribute to the growing body of knowledge in this field. A survey regarding the importance of each criteria was conducted by distributing questionnaires to architects with experience in daylight retrofitting. The survey data was analysed using the factor analysis, factor score, and weightage factor to rank the sub-criteria according to its importance for daylight retrofitting based on the weightage values obtained. The established criteria provide an overview and act as a source of reference for decision-makers regarding the most influential criteria for optimal retrofit solutions.

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Published

2020-05-10

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Section

Articles