Energy efficiency in electrical systems

What factors are most significant in understanding adoption behavior for energy efficiency technologies by commercial, residential, and industrial customers? The case of energy efficient lighting technologies is specifically examined. Several types of lighting technologies are compared to indoor LED lighting to determine how the technology meets the needs of the various user types. What factors are most significant in motivating technology adoption for such technologies, and preventing subsequent technology disadoption? This is particularly important for energy efficient lighting technologies, as both technology adoption and technology disadoption can be extremely rapid, and ongoing user involvement is often required to recognize full benefits from these technologies. The Unified Theory of Acceptance and Use of Technology (UTAUT) is useful in explaining adoption behavior related to stakeholder expectation and buy-in for the new technologies. UTAUT contains four elements that can be adapted to fit this research: (1) Performance Expectancy; (2) Effort Expectancy; (3) Social Influences; and (4) Facilitating Conditions. In the case of energy efficient lighting adoption, and LED adoption in particular, performance expectancy and effort expectancy can be related to factors such as future energy price expectancies, actual savings results, and ease of energy savings. Factors involving social influences include perceptions of environmental friendliness among different user groups, and facilitating conditions include policies, incentives, and educational programs to encourage adoption. Some conclusions are then drawn regarding adoption factors for emerging energy efficient lighting technologies.

Energy efficiency and the environment: the potential for energy efficient lighting to save energy and reduce carbon dioxide emissions at Melbourne University, Australia

Energy-efficient lighting technologies have undergone significant advancements in recent years, driving a transformation in the lighting industry. This comprehensive review explores various energy-efficient lighting technologies and trends, aiming to provide insights into their applications, benefits, and future prospects. The review begins with an overview of energy-efficient lighting technologies, including light-emitting diodes (LEDs), compact fluorescent lamps (CFLs), and advanced lighting controls. It examines the key characteristics and advantages of each technology, highlighting their energy-saving potential and environmental benefits. Next, the review discusses the trends shaping the energy-efficient lighting market, such as the transition to solid-state lighting, the emergence of smart lighting systems, and the growing emphasis on human-centric lighting design. It explores how these trends are driving innovation and transforming the way lighting is used and managed in various settings. The review also examines the benefits of energy-efficient lighting technologies, including reduced energy consumption, lower maintenance costs, and enhanced lighting quality. It discusses how these technologies contribute to energy conservation, sustainability, and improved lighting experiences for users. Furthermore, the review discusses the challenges and barriers to the widespread adoption of energy-efficient lighting technologies, such as high upfront costs, technical complexity, and the need for regulatory support. It explores strategies to overcome these challenges and accelerate the adoption of energy-efficient lighting solutions. Finally, the review provides insights into the future outlook for energy-efficient lighting technologies, highlighting emerging trends, innovative applications, and potential areas for further research and development. It emphasizes the importance of continued innovation and collaboration in driving the evolution of energy-efficient lighting technologies towards a more sustainable and efficient future. In summary, this comprehensive review offers a detailed analysis of energy-efficient lighting technologies and trends, providing valuable insights for researchers, policymakers, and industry stakeholders seeking to understand and leverage the potential of energy-efficient lighting for a sustainable future. Keywords: Energy-Efficient, Lighting, Technologies, Trend, Review.

Better information on greenhouse gas (GHG) emissions and mitigation potential in the agricultural sector is necessary to manage these emissions and identify responses that are consistent with the food security and economic development priorities of countries. Critical activity data (what crops or livestock are managed in what way) are poor or lacking for many agricultural systems, especially in developing countries. In addition, the currently available methods for quantifying emissions and mitigation are often too expensive or complex or not sufficiently user friendly for widespread use.The purpose of this focus issue is to capture the state of the art in quantifying greenhouse gases from agricultural systems, with the goal of better understanding our current capabilities and near-term potential for improvement, with particular attention to quantification issues relevant to smallholders in developing countries. This work is timely in light of international discussions and negotiations around how agriculture should be included in efforts to reduce and adapt to climate change impacts, and considering that significant climate financing to developing countries in post-2012 agreements may be linked to their increased ability to identify and report GHG emissions (Murphy et al 2010, CCAFS 2011, FAO 2011).

This paper reviews the change in energy efficiency of lighting technology during the 30-year period between the energy crises of the 1970’s oil embargo and last year’s de-regulated wholesale market, electricity price spikes. Lighting power requirements have been cut in half for new commercial buildings, dropping from 3 to 1.5 watts or less per square foot of conditioned space. Fluorescent lighting technology has changed from four-foot T-12 lamps requiring 40 watts, to high-lumen, 32-watt T-8 lamps. Copper intensive and noisy magnetic ballasts have been replaced with lightweight, high frequency electronic ballasts lowering power from 10 to one watt per fixture. Today this trend continues with the movement away from Edison’s incandescent lamp to compact fluorescent lamps (CFL) that save 70% of the electrical energy. In response to the wholesale electricity prices spikes, the Northwest Energy Efficiency Alliance partnered with regional electric utilities and retail stores to offer CFL discount coupons. As a result, CFL sales rose from about 500,000 in 2000 to over 8 million in 2001. This is one more example of how energy efficiency programs sponsored by the nation’s electric utilities have driven both technology and the market to change.

Household transitions to energy efficient lighting

Historical buildings are bridges between the past and the present. Moreover, it is a mirror of the life of societies, which lived in other ages. Historic buildings need to be illuminated to provide better visual conditions. The demand for electricity is increasing day by day. Energy must be used efficiently to reduce the amount of energy being dissipated. Therefore, energy efficiency in the lighting for historical buildings is a topic of great importance. Various luminaires are used for interior and exterior lighting of historic buildings. However, new lighting technologies, such as light emitting diode (LED) luminaires, are many times more efficient than traditional technologies, such as incandescent luminaires. The use of new technologies can lead to significant reductions in net energy consumption and associated reductions in greenhouse gas emissions. Historic buildings can serve as powerful and highly visible demonstrations of energy-efficient lighting technologies. In this study, the cost and energy efficiency have been analyzed considering the investment costs and the energy consumption of LED luminaires instead of luminaires with incandescent, halogen and metal halide lamps using almost the same luminous flux in the example of the El Aman Caravanserai in Bitlis, Turkey. As a result, of the calculations, the annual energy consumption (9-066.6 kW·h) was reduced by 78.21 % compared to the conventional system (41-610 kW·h) installed with incandescent, halogen and metal halide lamps. Thus, the cost of using LED lighting system have been amortised in about 135 days. Later, lighting has been made with less energy consumption, and the energy has been used efficiently.

Greenhouse gas (GHG) emissions from unsustainable land-use practices around the world contribute significantly to anthropogenic climate change. Growing population pressure and low efficiency of agricultural production systems in Sub-Saharan Africa (SSA) trigger the expansion of agricultural land into natural ecosystems, which leads to deforestation and land degradation, and causes GHG emissions. At the same time, prolonged droughts and increasingly erratic weather patterns due to climate change jeopardise food security in SSA countries such as Kenya.

Providing high quality and energy efficient lighting in courtrooms is a complex task, and it represents a greater challenge than most other Federal space types. Energy efficient lighting in courtrooms must be accomplished with no sacrifice in quality; efficiency must be effectively invisible to the occupants. The Whole Building Design Guide puts forth the goals well: “As the preeminent symbol of Federal authority in local communities, a Federal courthouse must express solemnity, stability, integrity, rigor and fairness.” The courtrooms themselves must have a sense of majesty and be aesthetically inspiring. When paired with the visual needs in a courtroom—given the wide variety of tasks and the critical nature of the courtroom proceedings—one has a challenge indeed. In consideration of these issue, this report reviews existing conditions in courtrooms and provides specific guidance about solutions that will accomplish the dual objectives of high quality and energy efficiency. The material covers all aspects of courtroom lighting, including design criteria, design and application strategies, energy efficient technologies, procurement and team selection, design process and implementation, and education. A detailed energy analysis was performed to develop a baseline for energy consumption in courtroom lighting, and the primary root cause was found to be amore » high use of incandescent technology. Point-by-point calculations were completed to provide an energy efficient alternative that met the high level of criteria for performance in courtrooms. Additional detailed guidance has been provided in the spirit of a holistic solution. It is hoped and anticipated that the recommended solutions will transform courtroom lighting towards both energy efficiency and high quality lighting. This is more important than ever before given the passage of the Energy Policy Act of 2005, which significantly changes the energy usage requirements in Federal Buildings. Ultimately it is possible to support the critical and high stakes proceedings in courtrooms while still meeting the civic duty of designing for energy efficiency and sustainability.« less

Climate change policy has several potential risks. The purpose of this study is to investigate the impact of green technology development, green energy consumption, energy efficiency, foreign direct investment, economic growth, and trade (imports and exports) on greenhouse gas (GHG) emissions in South Asia from 1981 to 2018. We employed Breusch Pagan LM, bias-corrected scaled LM, and Pesaran CD as part of a series of techniques that can assist in resolving the problem of cross-sectional dependence. First and second generation unit root tests are used to assess the stationarity of the series, Pedroni and Kao tests are used to test co-integration. The long-term associations are examined using fully modified ordinary least square (FMOLS) and panel dynamic ordinary least square (DOLS) for robustness. The results revealed that trade, growth rate, and exports significantly increase GHG emissions. This accepted the leakage phenomenon. The results also demonstrated that green technology development, green energy consumption, energy efficiency, and imports all have a significant negative correlation with GHG emissions. Imports, advanced technical processes, a transition from non-green energy to green energy consumption, and energy efficiency are thus critical components in executing climate change legislation. These findings highlight the profound importance of green technology development and green energy for ecologically sustainable development in the South Asian countries and act as a crucial resource for other nations throughout the world when it comes to ecological security. This research recommends the consumption of environmentally friendly and energy-efficient technologies in order to mitigate climate change and the government's implementation of the most recent policies to neutralize GHG emissions in order to achieve sustainable development.

The Diffusion of Residential Energy Efficient (EE) Technologies has been studied for many years. Finding ways to bridge the energy efficiency gap and increase the diffusion of these technologies have been of much interest to researchers and practitioners alike. However, in most studies, diffusion is equated to adoption of EE technologies by consumers. The present study tries to break this mindset and develops a model to assess the diffusion of residential EE technologies from the market's perspective. The model assesses diffusion of an EE technology based on the market's ability to provide benefits to customers that are identified to be most important. The research contributes in several ways to the existing knowledge bank of residential EE technology diffusion. It provides an elaborate literature review on market attributes with associated components that help to develop the market attributes. The model allows to identify low rating attributes and helps to improve Market Diffusion Potential (MDP) MDP of technology cases by taking appropriate actions. Also, sensitivity analysis provides a snapshot of hypothetical situations that help decision makers to realize what to expect in case of extreme market situations and improve MDP of residential EE technologies by selecting appropriate business inclination strategy for excelling. The model can have several practical applications. The results of MDP assessment would aid in market transformation, utility program selection, as well as feed in information for R & D on prospective EE technologies and a wide array of other organizations with diversified interests in energy savings, climate change and sustainability.

Thailand's long-term GHG emission reduction in 2050: the achievement of renewable energy and energy efficiency beyond the NDC

Energy Benefits of Electronic Controls at Small and Medium Sized U.S. Manufacturers

The article deals with modern energy efficient lighting technology. The relevance of energy issues in the modern world is considered. The areas of optimization and improvement of energy efficiency of lighting systems to the specification of the model events are identified. The tool of intensification of development of the market — energy efficient lighting technology with the use of led lamps-retrofit is described.

Journal of the Acoustical Society of America : Ultrasonic relaxation in aqueous acetic acid solution Jackopin, L.G., Yeager, E., 52 (September 1972) 831