Abstract
Today, energy shortage and carbon emission are the major challenges faced by all countries. There are many ways to tackle this issue by saving energy in many sectors. Lighting is used in many applications and it is one of the areas to be addressed for improving the energy efficiency thereby reducing the energy consumption. In this paper, a typical office building in Dubai is considered for analysis. The first section of the paper reports an efficient use of natural lighting into an office building to improve the energy efficiency. This study is carried out using Simulation software VELUX Daylight Visualizer 2 and simulation results are discussed in detail. The study showed that an ideal office space in Dubai has ample potential to harvest natural light to reduce the need for artificial lighting. In the second section, artificial lighting is used to complement natural lighting to meet the required illumination criteria. DIALux 4.1 Lighting Wizard software is used to design and evaluate artificial lighting scheme with similar illumination abilities for the same office space through the use of different types of lamps and the simulation results are highlighted. Its cost effectiveness is also studied. The impact of use of natural lighting and artificial lighting on HVAC system is examined and highlighted.
Highlights
Energy consumption is a major concern of global discussions among engineers, scientists and planners.Lighting is one of the sectors of power consumption in residential and co mmercial buildings
In Dubai, as with the rest of the world, artificial lighting fo rboth fu n ct io n al an d d eco rat iv e p u rp os es is a considerable part of total electrical energy consumed in office buildings scope of effective utilization of natural lighting is existent
Light Wizard software is used for analysis of the indoor lighting schemes using both Fluorescent and Light Emitting Diode (LED) lu minaries
Summary
Energy consumption is a major concern of global discussions among engineers, scientists and planners. An important issue with few b u ild in gs is o ver-illu min at io n and s ubs eq uent cost effect iveness These costs can be great ly reduced using light ing strat eg ies such as light ing contro l systems to efficiently harvest day light fo r indoor lighting purposes. The main objectives of this paper are to explore the possibility of optimizing the use of day lighting in the office building and to reduce the energy consumption. Reducing lighting energy consumption is a major concern for building owners, governments and utilities. A typical office space in Dubai in the M iddle East is considered for the analysis to find a balance between different strategies that could be used to reduce the electrical lighting energy consumption. The selection of the facade, the orientation of the building will play a vital part in p redicting the thermal gain calculations of the structure
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