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Dylan Mcconnell - One of the best experts on this subject based on the ideXlab platform.

  • renewable Energy Technology cost review
    2011
    Co-Authors: Patrick Hearps, Dylan Mcconnell
    Abstract:

    This paper undertakes a review of current and future costs of three forms of renewable Energy Technology by comparing data from a range of international and Australian-specific studies, taking care to compare data on the same basis of financial assumptions (discount rates) and resource quality. The purpose was to compare the absolute costs and the rate of decrease in costs, and to understand the reason for differences between the studies. The Australian-specific datasets are the ‘Australian Energy Generation Technology Costs’ report by the Electric Power Research Institute (EPRI), and the 2010 dataset used by the Australian Energy Market Operator (AEMO), largely based on the EPRI data with a review from ACIL Tasman. The assessment reviewed technical and economic parameters of wind, photovoltaic (PV) and concentrating solar thermal (CST) Energy Generation technologies, considering Technology specific learning rates and cost reduction potentials. It includes a detailed exploration of the factors contributing to the learning rates and cost reductions. Levelised Cost of Energy (LCOE) calculations were used to develop cost outlooks and compare the outlooks to other projections. Where relevant, LCOE is calculated from capital and operating cost data at a common renewable resource level, exclusive of subsidies or carbon costs. Common financial assumptions (in particular discounting rates) are used to provide a consistent basis of comparisons and analysis.

  • renewable Energy Technology cost review
    2011
    Co-Authors: Patrick Hearps, Dylan Mcconnell
    Abstract:

    This paper undertakes a review of current and future costs of three forms of renewable Energy Technology by comparing data from a range of international and Australian-specific studies, taking care to compare data on the same basis of financial assumptions (discount rates) and resource quality. The purpose was to compare the absolute costs and the rate of decrease in costs, and to understand the reason for differences between the studies. The Australian-specific datasets are the ‘Australian Energy Generation Technology Costs’ report by the Electric Power Research Institute (EPRI), and the 2010 dataset used by the Australian Energy Market Operator (AEMO), largely based on the EPRI data with a review from ACIL Tasman. The assessment reviewed technical and economic parameters of wind, photovoltaic (PV) and concentrating solar thermal (CST) Energy Generation technologies, considering Technology specific learning rates and cost reduction potentials. It includes a detailed exploration of the factors contributing to the learning rates and cost reductions. Levelised Cost of Energy (LCOE) calculations were used to develop cost outlooks and compare the outlooks to other projections. Where relevant, LCOE is calculated from capital and operating cost data at a common renewable resource level, exclusive of subsidies or carbon costs. Common financial assumptions (in particular discounting rates) are used to provide a consistent basis of comparisons and analysis.

Patrick Hearps - One of the best experts on this subject based on the ideXlab platform.

  • renewable Energy Technology cost review
    2011
    Co-Authors: Patrick Hearps, Dylan Mcconnell
    Abstract:

    This paper undertakes a review of current and future costs of three forms of renewable Energy Technology by comparing data from a range of international and Australian-specific studies, taking care to compare data on the same basis of financial assumptions (discount rates) and resource quality. The purpose was to compare the absolute costs and the rate of decrease in costs, and to understand the reason for differences between the studies. The Australian-specific datasets are the ‘Australian Energy Generation Technology Costs’ report by the Electric Power Research Institute (EPRI), and the 2010 dataset used by the Australian Energy Market Operator (AEMO), largely based on the EPRI data with a review from ACIL Tasman. The assessment reviewed technical and economic parameters of wind, photovoltaic (PV) and concentrating solar thermal (CST) Energy Generation technologies, considering Technology specific learning rates and cost reduction potentials. It includes a detailed exploration of the factors contributing to the learning rates and cost reductions. Levelised Cost of Energy (LCOE) calculations were used to develop cost outlooks and compare the outlooks to other projections. Where relevant, LCOE is calculated from capital and operating cost data at a common renewable resource level, exclusive of subsidies or carbon costs. Common financial assumptions (in particular discounting rates) are used to provide a consistent basis of comparisons and analysis.

  • renewable Energy Technology cost review
    2011
    Co-Authors: Patrick Hearps, Dylan Mcconnell
    Abstract:

    This paper undertakes a review of current and future costs of three forms of renewable Energy Technology by comparing data from a range of international and Australian-specific studies, taking care to compare data on the same basis of financial assumptions (discount rates) and resource quality. The purpose was to compare the absolute costs and the rate of decrease in costs, and to understand the reason for differences between the studies. The Australian-specific datasets are the ‘Australian Energy Generation Technology Costs’ report by the Electric Power Research Institute (EPRI), and the 2010 dataset used by the Australian Energy Market Operator (AEMO), largely based on the EPRI data with a review from ACIL Tasman. The assessment reviewed technical and economic parameters of wind, photovoltaic (PV) and concentrating solar thermal (CST) Energy Generation technologies, considering Technology specific learning rates and cost reduction potentials. It includes a detailed exploration of the factors contributing to the learning rates and cost reductions. Levelised Cost of Energy (LCOE) calculations were used to develop cost outlooks and compare the outlooks to other projections. Where relevant, LCOE is calculated from capital and operating cost data at a common renewable resource level, exclusive of subsidies or carbon costs. Common financial assumptions (in particular discounting rates) are used to provide a consistent basis of comparisons and analysis.

Joao De Sa Brasil Lima - One of the best experts on this subject based on the ideXlab platform.

  • photovoltaic electricity production in brazil a stochastic economic viability analysis for small systems in the face of net metering and tax incentives
    Journal of Cleaner Production, 2017
    Co-Authors: Luiz Celio Souza Rocha, Giancarlo Aquila, Edso De Oliveira Pamplona, Anderson Paulo De Paiva, Uno Galelli Chieregatti, Joao De Sa Brasil Lima
    Abstract:

    Abstract Currently, in addition to the search for sustainable development, there is increased pressure for a change in consumption and production of Energy patterns in Brazil. In this scenario, net metering is an important mechanism fostering dissemination of small photovoltaic (PV) solar systems. As complementary support to net metering, a tax exemption is currently being offered in some Brazilian states. Thus, the objective of the present study is to analyze the impact of tax exemption on the circulation of goods and services, and the returns and risks of the PV microGeneration project in four cities located in different regions of Brazil: Belem, Petrolina, Uberaba and Uruguaiana. The analysis is performed using the Monte Carlo Simulation (MCS), wherein uncertainties related to the financial and environmental variables are considered. The results of the stochastic economic viability analysis allowed us to conclude that the exemption of tax on circulation of goods and services (ICMS) is fundamental to make PV microGeneration viable in Brazil. In the cities analyzed, PV microGeneration presented economic unfeasibility to the investor when the ICMS is charged. When considering the ICMS exemption policy, the cities of Petrolina and Belem obtained high probabilities of viability. In relation to the risk analysis, PV microGeneration obtained the best results in Petrolina, both in terms of the condition of collection and exemption of ICMS. There is high potential for harness solar throughout the Brazilian territory. However, due to the current evolution stage and the productive chain of the Brazilian PV industry, high costs limit the expansion of this clean Energy Generation Technology. The findings of this study could assist policymakers in evaluating this incentive program, highlighting that this tax exemption directly meets one of the objectives for which the ICMS was created which is to encourage the development of productive sectors, such as PV industry.

D Sutanto - One of the best experts on this subject based on the ideXlab platform.

  • modeling and design of a multiport magnetic bus based novel wind wave hybrid ocean Energy Generation Technology
    IEEE Industry Applications Society Annual Meeting, 2020
    Co-Authors: Md Ashib Rahman, Md Rabiul Islam, Kashem M Muttaqi, D Sutanto
    Abstract:

    This paper proposes a novel multiport magnetic bus (MMB) based hybrid wind-wave ocean Energy Generation Technology. The wave Energy converters (WECs) generate voltages with varying amplitudes and frequencies, which produce significant dc-link voltage ripples at the outputs of the ac/dc rectifiers. A new control technique is proposed to strictly regulate the output voltage and current waveforms of the MMB that integrates multiple WECs. With the proposed MMB-based Technology and control technique, the high voltage ripples can be mitigated without the need of utilizing high value capacitors or supercapacitors. For the modeling of the WEC, an Archimedes wave swing-based conversion method is adopted. To extract the maximum power from the waves, a damping controller is designed. The MMB contains multiple active bridges, which are operated as dc-dc converters and provide an isolation between the WEC and the wind Energy converters. For the wind Energy Generation system, a doubly fed induction generator-based Technology is considered. Simulation results validate the superior performance of the proposed ocean Energy Technology in terms of both ripple reduction and stable performance under the uncertain nature of the wave and wind in the ocean.

Dupim, Ivaldete Da Silva - One of the best experts on this subject based on the ideXlab platform.

  • Processamento de pós de Zircaloy por hidretação e desidretação e microestruturas de ligas de urânio-molibdênio
    2015
    Co-Authors: Dupim, Ivaldete Da Silva
    Abstract:

    Orientador: Prof. Dr. Sydney Ferreira SantosTese (doutorado) - Universidade Federal do ABC, Programa de Pós-Graduação em Nanociências e Materiais Avançados, 2015.Combustiveis nucleares baseados em materiais compositos obtidos pela dispersao de ligas de uranio em matrizes metalicas sao alternativas interessantes para o avanco da tecnologia de geracao nucleoeletrica. Ligas de U-Mo tem grande potencial para serem utilizadas como elemento combustivel nos combustiveis tipo placa e as ligas de zirconio, como o zircaloy-4, como material de matriz e revestimento. A fase ¿Á do uranio e isotropica e garante estabilidade mecanica e termica ao uranio em diferentes condicoes de operacao, mas essa fase apenas e estavel em altas temperaturas. A adicao de molibdenio tem se mostrado eficiente na estabilizacao dessa fase em baixa temperatura e o zircaloy-4 possui caracteristicas interessantes para a industria nuclear, tais como alto ponto de fusao, alta condutividade termica e baixa secao de choque de absorcao de neutrons. No presente trabalho, foram estudadas rotas para a obtencao de pos de Zircaloy-4, sendo esta uma etapa muito importante para a fabricacao de compositos de combustivel nuclear tipo placa. Estudou-se tambem sintese de ligas de U-Mo, com estruturas ¿Á por rotas de fusao, sendo investigadas as composicoes U-7%Mo, U-8,5%Mo e U-10%Mo. Essas ligas foram fundidas em um forno a arco e de inducao e tratadas termicamente para a estabilizacao da fase ¿Á. Os resultados obtidos mostraram que independente do processo de fusao e da composicao das ligas, e necessario um tratamento termico para a dissolucao das dendritas e homogeneizacao das ligas. O tratamento termico seguido de tempera se mostrou eficiente para a estabilizacao completa da fase ¿Á para as ligas com adicao de apenas 7% em peso de molibdenio. Por outro lado, o tratamento termico seguido de resfriamento lento conseguiu estabilizar a fase ¿Á apenas nas ligas com 10% em peso de molibdenio. As ligas com 7% e 8,5% de Mo que sofreram um resfriamento lento apresentavam uma fracao de fase ¿¿. Quanto a obtencao de pos de zircaloy, esta pode ser realizada atraves da tecnica de hidretacao, cominuicao e desidretacao. A cinetica de absorcao e desorcao de hidrogenio apresentou melhores resultados nas amostras laminadas a frio antes do processo de hidretacao. O tempo de absorcao de hidrogenio das amostras como recebida (770 segundos) e apos (18 segundos) diminuiu 96,75% quando hidretadas a 450 ¿C e 1000kP de H2. A temperatura de desorcao do hidrogenio das amostras hidretadas passou de 1000 ¿C para as amostras como recebida para 850 ¿C para as amostras apos 25 passes. Alem disso, o processo de moagem de alta energia tambem se mostrou eficaz para a producao de pos de hidreto. Os resultados e discussoes contidos nesta tese sao importantes para demonstrar a viabilidade de diversas rotas de obtencao de materiais metalicos utilizados na producao de combustiveis nucleares tipo placa.Nuclear fuels based on composite materials obtained by dispersion of uranium alloys in metal matrices are interesting alternatives to the improvement of the nuclear Energy Generation Technology. U-Mo alloys have great potential to be used as fuel element in dispersion fuels and zirconium alloys, such as zircaloy-4, as coating and matrix material. The ã-U phase is isotropic and provides mechanical and thermal stability to the uranium in different operating conditions, but it is only stable at high temperatures. The addition of molybdenum has been considered effective for the stabilization of this phase at low temperatures while the zircaloy-4 has interesting features for the nuclear industry, such as high melting point, high thermal conductivity and low neutron absorption cross section. In this present work several routes for obtaining zircaloy-4 powder were investigated, which is a very important step for the production of plate type nuclear fuels. It was also studied the synthesis of U-Mo alloys by melting techniques. The investigated alloys have the following compositions: U-7% Mo, U-8,5% Mo and U-10% Mo. These alloys were prepared by arc and induction melting followed by heat treatments aiming to stabilize the ã phase. The results showed that regardless the melting process and alloy composition, annealing at high temperature is required for the dissolution of dendrites and homogenization of the alloy. The complete stabilization of the ã phase was achieved to the alloy with 7% Mo heat treated by annealing and quenching. The alloys with 7% and 8,5% Mo subject to slow cooling after the annealing showed of the presence of á phase into their microstructures. On the obtaining of zircaloy powder, it could be accomplished by hydriding, comminution and dehydriding techniques. Hydriding kinetics of zircaloy was faster for cold rolled samples. Cold rolling was also effective for reducing the temperature of hydride decomposition. Moreover, the high-Energy ball milling process also proved effectiveness for the production of powder hydride. The results and discussions of this thesis are important to shed some light on the feasibility of the investigated processing routes for producing the metallic materials necessary to the fabrication of plate type nuclear fuels