A study of energy efficiency building lighting system design

A considerable portion of the energy consumed in the electrical system in the world today is converted to artificial lighting. Light is essential to harmony between the activities of people in the contemporary world. With the increase in the energy consumption by different segments in relation to the difficulty of generation, it is possible to see the importance of efficient ways of lighting. This research discusses the performance of different lighting system in the Masjid Tanah Community College (MCTT) and saving the energy consumption in the laboratory lighting application. DIAlux software is used to study and evaluate the efficiency lighting scheme through the three (3) different type lighting system. DIALux 4.10 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 heating, ventilating and air conditioning (HVAC) system is examined and highlighted. The major findings in this research are the energy-efficient lighting design could still be achieved without sacrificing the visual comfort and quality of lighting and replacement of older fixtures with new luminaries can improve

MODERNISATION OF POWER PLANT LIGHTING WITH LED LIGHTING

A substantial part of the power consumption of a power plant on stand-by is due to lighting. As the need to cut power plant’s own electrical energy usage grows, the power consumption of lighting becomes a potential area of improvement. The objective of this thesis is to study the possibility of installing light emitting diode (LED) lighting in a Wärtsilä power plant. Additionally, the objective is to list the rel e-vant international lighting standards. The LED lighting technology appears to have desirable properties, which is why LED lamps were chosen to be compared in this study. Real life examples of power plant rooms were chosen as a base for simulations. Original lighting simulatio ns were com-pared against a new set of simulations with LED technology lighting. Quality of light-ing, energy use and costs of installation and maintenance interval were compared. In three different simulations of engine hall, LED lamps did not appear to be the prefer-able choice for lighting. Compared to linear fluorescent lamps, LED lamps either co n-sumed more electrical energy, required more luminaires to be installed or lowered the lighting quality of the engine hall, depending on the chosen LED lamp types. In conclusion, LED lighting was found not being suitable for this application. The lamps based on LED lighting technology seem to be unable to compete against the older lighting technolo gy lamps such as linear fluorescent t ubes and high intensity discharge lamps in aspects of energy consumption and light distribution in an industrial setting. Tested LED lamps did not produce enough lumens per watt and did not distribute the light well enough when compared to the older solutionfi=Opinnäytetyö kokotekstinä PDF-muodossa.|en=Thesis fulltext in PDF format.|sv=Lärdomsprov tillgängligt som fulltext i PDF-format

An Examination Into the Use of Compact Fluorescent Lamps in the Domestic Environment

The Irish government, UK government and European Commission have recently passed a ban on the sale of all incandescent/GLS lamps above 1 OOW. This commenced in September 2009, with smaller wattages to be phased out by 2012. This paper sets out to investigate if compact f luorescent lamps (CFLs) are an adequate, su itable and appropriate replacement for GLS lamps in domestic environments. An overview of CFL performance is undertaken, initially t hrough a literature review and then through laboratory measurements. The findings of this are insightful for all readers using CFLs in their homes. In-depth research was carried out to examine CFLs, power factor, harmonic distortion and their likely effects on the national grid. The possible risk of an overloaded three-phase neutral conductor are also evaluated, which provides useful information for electrical services design engineers

Controlled Ecological Life Support Systems (CELSS) conceptual design option study

Results are given of a study to explore options for the development of a Controlled Ecological Life Support System (CELSS) for a future Space Station. In addition, study results will benefit the design of other facilities such as the Life Sciences Research Facility, a ground-based CELSS demonstrator, and will be useful in planning longer range missions such as a lunar base or manned Mars mission. The objectives were to develop weight and cost estimates for one CELSS module selected from a set of preliminary plant growth unit (PGU) design options. Eleven Space Station CELSS module conceptual PGU designs were reviewed, components and subsystems identified and a sensitivity analysis performed. Areas where insufficient data is available were identified and divided into the categories of biological research, engineering research, and technology development. Topics which receive significant attention are lighting systems for the PGU, the use of automation within the CELSS system, and electric power requirements. Other areas examined include plant harvesting and processing, crop mix analysis, air circulation and atmosphere contaminant flow subsystems, thermal control considerations, utility routing including accessibility and maintenance, and nutrient subsystem design

Negative effects of energy-saving, non-linear loads on LV systems : causes and recommendations

Abstract: Pressure is being exerted on utilities and electrical energy customers to reduce energy consumption. There are two concerns: the effect that increasing greenhouse gasses have on global warming and the dwindling non-renewable resources currently used for the production of electrical power. The use of modern energy-efficient appliances such as Compact Fluorescent Lamps and micro-wave ovens is a widely promoted solution. These types of devices are recommended not only in affluent areas but also in developing countries (such as South Africa) where the use of computers and television sets are also being encouraged as devices for increasing the level of information and education. However, the use of these devices can introduce significant problems. This paper reviews a range of published material on the various aspects of this topic. It also includes the results from experimental measurements. Finally, the paper discusses some recommendations that are intended to bridge the gap between theoretical analyses and the practical implementation of mitigating steps, as they apply to low voltage distribution systems

Revision of the EU Green Public Procurement Criteria for Street Lighting and Traffic Signals - Preliminary Report

Lighting is used on more than 1.6 million km of roads in EU28 countries, accounting for some 35 TWh of electricity consumption (1.3% of total electricity consumption) and costing public authorities almost €4000 million each year. A broad review of relevant technical, policy, academic and legislative literature has been conducted. This report examines the current market situation and the potential for reducing environmental impacts and electricity costs by assessing the recent developments in road lighting technology, particularly LEDs. Particularly important areas identified relate to energy efficiency, light pollution, product durability and, specifically for longer lasting and rapidly evolving new LED technologies, reparability and upgradeability. The information in this report shall serve as a basis for discussion with stakeholders about the further development and revision of EU GPP criteria for street lighting and traffic signals.JRC.B.5-Circular Economy and Industrial Leadershi