International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 05 | May 2024
p-ISSN: 2395-0072
www.irjet.net
Evaluating the Energy Efficiency of Horizontal Light Transmitting System in Office Buildings Poojitha K1, A Maheswari2, 1 M.Arch Student, Faculty of Architecture, Dr. M.G.R Educational and Research Institute, Chennai,
Tamil Nadu, India.
2 Asst. Professor, Faculty of Architecture, Dr. M.G.R Educational and Research Institute, Chennai, Tamil Nadu, India
---------------------------------------------------------------------***--------------------------------------------------------------------1.2 Scope and Limitations Abstract - The study evaluates the integration of horizontal light transmitting systems in high-rise, glazed office buildings to enhance energy efficiency and daylight utilization. It focuses on regions without overcast skies and minimum day illuminance. Methodology includes literature review, case studies, and comparative analysis between traditional lighting systems and horizontal light pipes. The study finds that horizontal light transmitting systems can save up to 38% of lighting energy and 24% of overall energy consumption in office buildings. The proposed model indicates a payback period of 3 years, making the investment economically viable. Limitations include applicability to only high-rise, glazed office buildings and potential variations in effectiveness based on different climates and daylight hours. Long-term performance and future lighting advancements are not fully addressed in the study.
Key Words: Daylighting, Energy Efficiency, Horizontal light pipes, Office Building
1. INTRODUCTION Assessing innovative daylighting solutions in workspaces is vital for enhancing natural lighting utilization and cutting down on electricity consumption. This evaluation focuses on their impact on reducing energy usage and advancing sustainable architecture.
1.1 Aim and Objective The aim of the study is to assess and demonstrate the effectiveness of integrating horizontal light transmitting system as a daylighting solution in office buildings to enhance energy efficiency. The objectives of the study are; Identify - To evaluate the current energy consumption patterns in typical office buildings, identifying areas where lighting systems play a significant role Analyse - To analyse the design principles and technical specifications of horizontal light transmitting system to understand their potential for harnessing natural light and enhancing daylight utilization Evaluate - To study the financial feasibility and assess the return on investment for the implementation of these horizontal light transmitting system
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The study focuses on high-rise, glazed office buildings prone to issues like glare and thermal comfort. It considers new construction in regions with minimal overcast skies and adequate daylight. A speculative model is created using simulation to optimize energy efficiency and to calculate the implementation costs, energy savings, and payback period. Limitations include the study's applicability only to high-rise, glazed office buildings and its variability in effectiveness depending on regional climate conditions and daylight hours. It does not consider long-term performance or future advancements in lighting technology.
2. METHODOLOGY The methodology followed for the study was, firstly, a literature study was done to understand the need for daylighting, energy efficiency, theoretical aspects, types and the components of these horizontal light transmitting system. Next, a comparative study was conducted between traditional lighting systems and horizontal light pipes in terms of energy efficiency, lighting distribution, electricity consumption. This is done through an experiment where a simulation model is set up for a hypothetically said situation. The abstract costing was be done to learn the costing aspect of the proposed model. Lastly, cost of implementation and payback analysis was done to understand the potential return on investment.
3. LITERATURE REVIEW Among the electrical energy consuming services lighting energy contributes to almost 30%.[1] In a glazed building conditions the area next to the glazing gets maximum amount of natural light compared to the other deeper region. But the amount of glare provided by this glazing system is causing visual discomfort.[2] Hence by introducing innovative daylighting technology along with controls we can get daylight into deeper office spaces and also reduce electrical energy consumption.[3] There are two types of providing daylighting: Stepped and Diming. Stepped gives more energy efficiency but when
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