The building orientation and local weather conditions were taken into consideration for the effective utilization of day lighting followed by a comparison study of conventional lighting luminaires such as Fluorescent and LED (Light Emitting Diode) lamps. In this paper, a typical office space in Dubai in the Middle East is considered for the analysis to find a balance between different strategies that could be used to reduce the electrical lighting energy consumption. Governments, utilities and all other building stakeholders have already started implementing strategies to replace existing lighting with more energy efficient lighting sources. (2010, pp.341-347) concluded that indoor lighting fixtures accounts for 5–15% of the total electric energy consumption. A study presented by Nicol, Wilson and Chiancarella (2006, pp.802–813) says that lighting is one of the largest energy users in domestic and commercial buildings and another research presented by Ryckaert et. Reducing lighting energy consumption is a major concern for building owners, governments and utilities. The ultimate goal is to achieve energy efficiency in lighting system design. 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 through the use of artificial lighting while limiting its effects on the cooling load. As a result, lighting represents a serious component of energy use today and has attracted a lot of attention, especially in office buildings. These costs can be greatly reduced using lighting strategies such as lighting control systems to efficiently harvest day light for indoor lighting purposes. An important issue with few buildings is over-illumination and subsequent cost effectiveness. In Dubai, as with the rest of the world, artificial lighting for both functional and decorative purposes is a considerable part of total electrical energy consumed in office buildings although scope of effective utilization of natural lighting is existent. Demand for energy consumption in every country is increasing everyday and there is a scope to improve energy efficiency. Lighting is one of the sectors of power consumption in residential and commercial buildings. Introduction Energy consumption is a major concern of global discussions among engineers, scientists and planners. The impact of use of natural lighting and artificial lighting on HVAC system is examined and highlighted.ġ. 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. In the second section, artificial lighting is used to complement natural lighting to meet the required illumination criteria. The study showed that an ideal office space in Dubai has ample potential to harvest natural light to reduce the need for artificial lighting. This study is carried out using Simulation software VELUX Daylight Visualizer 2 and simulation results are discussed in detail. The first section of the paper reports an efficient use of natural lighting into an office building to improve the energy efficiency. In this paper, a typical office building in Dubai is considered for analysis. 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. There are many ways to tackle this issue by saving energy in many sectors. Today, energy shortage and carbon emission are the major challenges faced by all countries.
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