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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Spatial Memory Of Electrification In Early Republican Capital, Ankara

Pelen, Ovgu 01 September 2008 (has links) (PDF)
The search for the process of electrification in Turkey and how it is materialized in urban space in different scales in indoor and outdoor is the aim of this thesis. Looking for the effects of electrification by means of making a discursive analysis and taking into consideration the objects in substance, concerning the practice itself, and searching for the transformations in the urban space and in urban living are the main objectives of this research. Consequently, popular media will be the main source to look for how electrification was materialized and depicted in the publicity. The popular publications of the period like / magazines, newspapers, films are going to be investigated and re-read in order to decipher how discursive formations were constructed. The intervals of the research period are theheydays of these Modernist discursive formations, mainly the 1930s / starting from 1928 the foundation of Ankara Gas and Electricity Factory which is the symbol and generator of electrification in the new capital Ankara, and ending with 1938 with Mustafa Kemal Atat&uuml / rk&amp / #8217 / s death which can be considered a major turning point in the discursive formations. The theoretical framework of the thesis will take the modernity project in the Turkish Republic, focusing on how collective memory and social identity was constructed at that time.
142

And then they lived sustainably ever after? : experiences from rural electrification in Tanzania, Zambia and Kenya /

Ilskog, Elisabeth, January 2008 (has links)
Diss. (sammanfattning) Stockholm : Kungliga Tekniska högskolan, 2008. / Härtill 6 uppsatser.
143

Hybrid Energy System for Off – Grid Rural Electrification(Case study Kenya)

Oama, Clint Arthur January 2011 (has links)
The aim of this thesis study is to design a hybrid energy system comprised of wind turbines, diesel generators and batteries to provide electricity for an off - grid rural community in Kenya. Wind Measurements collected over six years from 12 locations in Kenya have been studied and one site selected for this project due to its wind potential, geographical location and socio-economic potential. The energy system is designed to cater for the electricity demand of 500 households, one school, one medical clinic and an irrigation system. The system will support up to 3000 people. The Hybrid Optimization Model for Electric Renewables (HOMER) is the software tool that has been used to simulate the hybrid system and analyze its results. The optimization has been carried out and presented according to cost of electricity and sensitivity graphs have been used demonstrate the optimization based on diesel price and wind turbine hub height.
144

Assessing the impacts of rural electrification in Sub-Saharan Africa: the case of Ethiopia.

Aragaw, Mekonnen Lulie 26 April 2012 (has links)
This study links rural electrification and the transition to modern energy services with poverty reduction and rural development in Ethiopia. Benefits of rural electrification in reducing poverty and accelerating rural development in low-income developing countries have been insufficiently researched. This study analyses available empirical evidence at a local level and examines how electricity access translates into productive use beyond powering radios and lighting. A survey of 336 households was conducted in Northern Ethiopia on impacts of electrification on four rural towns with varying number of years of access to electricity. Evidence at household and community levels shows that access to electricity was followed by an increase in household connectivity rate, and slow transition to modern energy services based on level of household income and number of years of a household’s connection to electricity services. The pace of transition to modern energy services was slow, and household energy poverty and dependence on biomass fuels continued in most rural towns, having little impact on improved environmental management practices. Improvement in rural livelihood, poverty reduction, and delivery of public services was highest for those with more years of access to electricity, and higher income households. The fact that impacts of RE depend on number of years of a household’s electricity connection implies gradual improvements rather than immediate benefits after connection. In the short-term, households improved their quality of life through better lighting and reduced indoor-air pollution. In the medium and longer-term, households and communities diversified their income and received improved public services such as education, health, and potable water. Further benefits were wider off-farm and non-farm employment, increased rural markets, and improved environment for rural development. Very poor households benefited least, while those better-off utilized opportunities created through rural electrification. Though necessary for development, rural electrification alone is insufficient, and requires strong government commitment and political will to invest in public services and infrastructure, and encourage private sector participation. / Graduate
145

Vanadium Redox Flow Battery : Sizing of VRB in electrified heavy construction equipment

Zimmerman, Nathan January 2014 (has links)
In an effort to reduce global emissions by electrifying vehicles and machines with internal combustion engines has led to the development of batteries that are more powerful and efficient than the common lead acid battery.  One of the most popular batteries being used for such an installation is lithium ion, but due to its short effective usable lifetime, charging time, and costs has driven researcher to other technologies to replace it.  Vanadium redox flow batteries have come into the spotlight recently as a means of replacing rechargeable batteries in electric vehicles and has previously be used mainly to store energy for load leveling.  It possesses many qualities that would be beneficial to electrify vehicles.  The battery has the ability for power and energy to be sized independently which is not dissimilar to internal combustion vehicles.  It also has the potential for a tolerance to low discharges, fast response time, and can quickly be refueled by replacing the electrolyte; just like is done when a car refuels at the gas station.  The purpose of the study is to determine the possibility of using vanadium redox flow batteries to power heavy construction equipment, a wheel loader, with a finite amount of space available for implementation.  A model has been designed in MATLAB to determine how long the battery could last under typically applications for the wheel loader which needs a peak power of 200 kW.  From the volume available it has been determined that the battery can be installed with an energy capacity of 148 kWh.  The results of the model show that vanadium redox flow batteries can be used to power a wheel loader but due to the limiting energy density and cell components it remains to be impractical.
146

The electrification of the Sydney energy system, 1881-1986

Wilkenfeld, George January 1989 (has links)
Thesis (PhD)--Macquarie University, Centre for Environmental and Urban Studies, 1989. / Bibliography: leaves 360-379. / Electrification: an historical process -- A prehistory of electrification: the Sydney energy system to1881 -- Slow dawn of the electric light, 1881-1904 -- The momentum of growth, 1904-1932 -- The state takes charge, 1932-1950 -- Triumph of the grid, 1950-1986 -- The limits to electrification. / All technological systems require energy. The concentration of human population and economic activity in cities has relied on the development of urban energy systems, which bring energy to the city and distribute it to points of end use within it. Over the past century, electro-technology has come to dominate urban energy systems throughout the developed world. This process has been imperfectly documented and analysed, because the relationships between electricity and the energy service markets and local political frameworks within which each instance of urban electrificaiton has taken place have generally been neglected. -- This thesis presents electrification as an historical change in the urban energy system. It identifies the most important influences on urban energy demand and on the organisation of energy supply, and traces their interaction before the introduction of electro-technology, then from the beginning of electrification in the 1880s to its completion in the 1980s. -- Urban electrification is best observed and understood by following its course within a single city. Sydney is well suited to such an analysis, since it is highly electrified and encompasses within its two hundred year history all the major energy technologies of the past millenium. During the first century of its existence, it developed distinctively urban markets for transportation, street lighting, commercial, industrial and residential energy services. These were revolutionised by steam and by gas, the first specifically urban energy technology. -- The thesis examines how each energy form in turn gained a foothold in the Sydney energy system, diffused through it and spread beyond it to the rest of the state of New South Wales. It analyses long term trends in each of the various urban energy markets, and draws parallels in the pattern of succession of supply technologies. It demonstrates that these patterns were repeated with the introduction of electricity and, in the 1970s, by its emerging successors. -- During Sydney's second century each of its energy markets was electrified in turn, while its separate electricity supply systems coalesced into a unified grid serving the entire metropolis, and extending later into the rest of the state. Largely as a result of political circumstances in the 1880s, when electric lighting was first introduced, the municipal electricity supply organisations acquired considerable influence and autonomy, and resisted the later attempts of state governments to co-ordinate their development. --The electrification of the Sydney and NSW energy systems had largely run its course by the late 1970s. Electricity supply had exhausted the economies of scale and technological development which had given it an advantage over other fuels. It had saturated the urban energy markets, and was facing new competitors in the form of natural gas and more efficient utilisation technologies. These changes in the energy system exacerbated the inherent problems in the organisation of electricity supply, which was predicated on unlimited growth and slow to adapt to the end of electrification. / Mode of access: World Wide Web. / [13], 379 leaves ill., maps
147

The history and the administration of the Salt River Project.

Şaylan, Gencay. January 1968 (has links) (PDF)
Thesis (M.P.A. - Public Administration)--University of Arizona, 1968. / Includes bibliographical references (leaves 98-100).
148

Solar energy for a brighter life : a case study of rural electrification through solar photovoltaic technology in the Eastern Province, Zambia /

Gustavsson, Mathias. January 2008 (has links)
Thesis (Ph.D.)-- University of Gothenburg, 2008. / "PV-ESCO Project"--Abstract. Includes bibliographical references (p. 89-103).
149

Empreendedorismo cooperativo e intercooperação na produção de energia elétrica e de alimentos : evidências do cooperativismo de eletrificação rural gaúcho

Zucatto, Luis Carlos January 2015 (has links)
A eletrificação rural é um desafio caracterizado pela população rarefeita, baixo consumo per capita, longas distâncias para atender aos consumidores e vias de difícil acesso para manutenção das redes. No Rio Grande do Sul, as primeiras iniciativas de eletrificação rural foram viabilizadas por meio de Cooperativas de Eletrificação Rural (CERs) que, com o passar do tempo, começaram a enfrentar problemas provocados pela privatização do setor elétrico brasileiro. Para sobreviverem, as CERs desenvolveram iniciativas de mútua cooperação, implementaram novos negócios, se articularam com e pelas estruturas de representação. Deste contexto emerge o questionamento: Como se desenvolvem a intercooperação e o empreendedorismo cooperativo no Cooperativismo de Eletrificação Rural Gaúcho e qual a contribuição destes para a produção de energia elétrica e de alimentos sob a lógica da sustentabilidade? Para se construir a resposta à questão, definiu-se como objetivo: Investigar se e como o empreendedorismo cooperativo e a intercooperação fomentam o Cooperativismo de Eletrificação Rural Gaúcho e a produção de energia elétrica e de alimentos sob a lógica da sustentabilidade. A teoria que embasa o estudo faz alusão ao displacement of concepts para se averiguar a apropriação do conceito de organização pela Teoria Organizacional e, também, como o conceito de cooperação é apropriado pelos Estudos Organizacionais. Trata-se a temática da cooperação sob as perspectivas da Biologia, da Sociologia e da Teoria Organizacional. Aborda-se o surgimento, as principais teorias e os princípios do cooperativismo. Discute-se o que é a organização cooperativa com ênfase naquelas abordagens que destacam o processo de os sujeitos, por meio deste tipo de organização, promoverem soluções a problemas comuns. A intercooperação é discutida enquanto um dos princípios do cooperativismo e também como lógica competitiva. É tratado, ainda, o fenômeno do empreendedorismo sob as abordagens de negócios, coletivo, social e cooperativo, com foco nesta última perspectiva. Os dados foram coletados por meio de entrevistas em profundidade com gestores de 13 das 15 CERs, sendo 17 gestores de CERs entrevistados, 11 experts do cooperativismo, 5 associados de CERs, 3 gestores de estruturas de representação de organizações cooperativas e 1 líder de classe de trabalhadores. Os resultados apontam que as CERs nasceram em um ambiente de intercooperação e que algumas têm conseguido desenvolver a capacidade de promover arranjos intercooperativos, inclusive em nível internacional. As iniciativas de intercooperação, entretanto, ainda não avançaram para ações como a de compras conjuntas. Sobre o empreendedorismo cooperativo, as iniciativas se dão no sentido da criação das CERs, geração de energia elétrica de forma individual e compartilhada, e o reforço de redes de distribuição. Já, no que tange à contribuição para a produção de energia elétrica e de alimentos sob a lógica da sustentabilidade, as CERs viabilizaram a permanência das famílias em suas propriedades ao disponibilizarem a energia elétrica, assim como favoreceram o uso de tecnologias para o aumento da produção e produtividade, aspectos que contemplam as dimensões social e econômica. Na geração de energia elétrica, são identificadas as dimensões social, ambiental e econômica. Emergem, ainda as dimensões territorial, política e tecnológica da sustentabilidade. / Rural electrification is a challenge characterized by sparse population, low per capita consumption, long distances to meet the consumer and the process of difficult access to network maintenance. In Rio Grande do Sul, the first initiatives of rural electrification were made possible through Rural Rlectrification Cooperatives (RECs) which, over time, began to face problems arising from the the privatization of the Brazilian electricity sector. To survive, the RECs have developed mutual cooperation initiatives, implemented new business, and were articulated with and by its representation structures. From this context arises the question: How to develop the inter-cooperation and cooperative entrepreneurship in the Cooperative Rural Electrification Gaucho and what their contribution to the electricity and food production under the sustainability logic? To build the answer to this question, it was defined as objective: To investigate whether and how the cooperative entrepreneurship and inter-cooperation hold up Rural Electrification Cooperativism gaucho and the production of food and electricity, under the logic of sustainability. The theory that underlies the study alludes to the displacement of concepts to determine the appropriation of organization concept by the Organizational Theory and also how the cooperation concept ois appropriated by Organizational Studies. Discusses the cooperation issues from the Biology, Sociology and Organizational Theory perspectives. It is argued what is the cooperative organization with an emphasis on those approaches that highlight the process of the subject, through this type of organization, promote solutions to common problems. The inter-cooperation is discussed as one of the principles of the cooperative as well as competitive logic. It is treated also the entrepreneurship phenomenon in business, collective, social and cooperative approaches, focusing on the latter perspective. In conducting the survey, data was collected by in-depth interviews with managers of 13 of the 15 RECs, totaling 17 RECs managers interviewed, 11 cooperativism experts, 5 families of members of RECs, three structures representation of cooperative organizations managers and one working class leadership.The results demonstrate that RECs are born in a intercooperation environment and that, throughout its history, some have been able to develop the ability to promote intercooperatives arrangements, including at the international level. The inter-cooperation initiatives, however, have not come forward to actions such as joint purchasing. Regarding the co-operative entrepreneurship, the main initiatives are given towards the creation of RECs, the RECs capitalization for creating enterprises, individual and shared electric power generation, and strengthening distribution networks. Already, regarding the contribution to food and electricity production under the logic of sustainability, RECs possible the permanence of families in their ownership by delivering electrical energy, as well as promoted the use of technology to increase production and productivity, all of which include the social and economic dimensions of sustainability. In power generation, the social, environmental and economic dimensions are identified. Emerge, although the territorial, political and technological sustainability dimensions.
150

A post-installation analysis of solar PV-diesel hybrid systems for school electrification in Sabah, Malaysia

Mahmud, Abdul M. January 2016 (has links)
Alternative energy technology has been used widely in rural electrification program (REP) all over the world for many years now. Renewable energy sources, such as solar, wind and biomass, are the preferred choices given the abundant resources available on site and the sophistication of the technologies involved. Combinations of two or more of the resources, together with an energy storage system and occasionally a conventional energy generator, create a hybrid system, which is reliable and durable. In Malaysia, solar photovoltaic (PV) base systems, implemented on a large scale, can provide round-the-clock electricity services for areas that are inaccessible by the electricity grid network. One of Malaysia s REP initiatives is solar PV-diesel hybrid systems for 160 schools in rural Sabah. The systems have been in operation for several years, but studies in the program are limited. Thus, understanding the system operation and functional is a highly valuable experience and lessons can be learned for implementation of the rural electrification program (REP). The overall aim of the research is to evaluate the REP in social, organizational, technical and economic aspects of the program that the findings can facilitate the stakeholders, such as the policy makers and implementers for current and future approaches, measures and decisions on REP activities and initiatives in Malaysia. This thesis has described the approaches on investigating the rural school s electrification program in Sabah. Analysis of system operation and function is conducted by examining and evaluating the recorded data from the system. A set of technical indicators is introduced in the form of system performance indicators and system reliability indicators. Furthermore, comparisons are made between the actual system operation and the optimum system configuration based on the actual data of the renewable energy resources, electricity energy consumption and costs in installation and operation. A field study was conducted at fifteen rural schools that use the solar PV system to determine the effectiveness of the program in transforming the rural schools to better learning environments and livelihoods. The findings indicate that most system components were found to be in good operation, and the operation of the solar PV system agreed to the indicators of system performance and system reliability. Additionally, the system reliability indicators can be seen as a vital tool not only to identify the values of the system capacity but also for prediction measures in analysing the durability of each component. The analysis of the actual system operation provides optimum values in terms of technical indicators, whereas the optimized system shows economic advantages. The findings show a high degree of responses from the end users in the level of satisfaction, appreciation, motivation and academic excellence. Nevertheless, several improvements are required to enhance the sustainability elements of the REP, especially from the organizational and governance perspectives. These includes effective coordination among the rural development-related agencies, the improvement on the transition between installation and maintenance work, efficient reporting process and training and awareness program need to be extended to every end user for sustainability in information and knowledge.

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