共查询到20条相似文献,搜索用时 15 毫秒
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The potential of grid-connected solar PV system in Bangladesh was estimated utilizing GeoSpatial toolkit, NASA SSE solar radiation data and HOMER optimization software. Financial viability of solar photovoltaic as an electricity generation source for Bangladesh was also assessed utilizing a proposed 1-MW grid-connected solar PV system using RETScreen simulation software for 14 widespread locations in Bangladesh. The technical potential of gird-connected solar PV in Bangladesh was calculated as about 50174 MW. The annual electricity generation of the proposed system varied depending on the location between 1653 MWh and 1854 MWh, with a mean value of 1729 MWh. Several different economic and financial indicators were calculated, such as the internal rate of return, net present value, benefit-cost ratio, cost of energy production and simple payback. All indicators – for all sites – showed favorable condition for development of the proposed solar PV system in Bangladesh. The results also showed that a minimum of 1423 tons of greenhouse gas emissions can be avoided annually utilizing the proposed system at any part of the country. 相似文献
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Hyderabad is reeling under a severe power crisis aggravated due to the recent bifurcation of the state of Andhra Pradesh. Telangana state needs more power than residual Andhra Pradesh due to greater demand from its Industrial and Agricultural consumers. The installed capacity (established as well as under construction) of power plants under Telangana Power Generation Corporation (TSGENCO) includes 2282.5 MW of thermal coal based power, 2081.76 MW of hydro power and 1 MW solar power. As more than 50% of the power source is coal based, there exists a threat of fossil fuel depletion and enhanced Green House Gas (GHG) emissions. Solar electricity has the potential to offset these negative impacts. This paper concentrates on evaluating the roof top area required for solar power generation using Remote Sensing and GIS apart from developing an algorithm using analytical methods, to estimate the photo-voltaic system components required, for the total power requirement of Hyderabad city. 相似文献
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Mohammad Ziaur Rahman 《Renewable & Sustainable Energy Reviews》2012,16(1):466-473
The aims of this paper are to demonstrate a critical review of the multitude of progress in solar PV research and applications in Bangladesh since its inception in 1996 till 2010. Our studies show that Bangladesh has been experiencing an accelerated shift towards solar PV to meet the gap between demand and supply of electricity along with conventional electricity generation. Despite the present generation of electricity from solar PV is 15-20 MW, both public and private sectors have started several solar PV projects to generate several hundred of MW by the upcoming years. This paper has also tried to identify the critical barriers for widespread dissemination of solar PV in Bangladesh and has discussed possible ways to overcome those barriers as well. 相似文献
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Bangladesh is a potential site of implementing renewable energy system to reduce the severe power crisis throughout the year. According to this, Chittagong is the southeastern part of Bangladesh is also a potential site for implementing renewable energy system such as grid-connected photovoltaic (PV) system. Financial viability and green-house gas emission reduction of solar PV as an electricity generation source are assessed for 500 kW grid connected solar PV system at University of Chittagong, Chittagong. Homer simulation software and monthly average solar radiation data from NASA is used for this task. In the proposed system monthly electricity generation varies between 82.65 MW h and 60.3 MW h throughout the year with a mean value of 68.25 MW h depending on the monthly highest and lowest solar radiation data. It is found that per unit electricity production cost is US$ 0.20 based on project lifetime 25 years. The IRR, equity payback and benefit-cost ratio shows favorable condition for development of the proposed solar PV system in this site. A minimum 664 tones of green-house gas emissions can be reduced annually utilizing the proposed system. 相似文献
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光伏发电系统是由能把太阳光能直接转换为电能的部件和子系统构成。其中的光伏阵列是将入射的太阳辐射能直接转换为直流电能的单元,太阳电池板组成的阵列与光伏阵列连接箱连接,电流经连接箱汇流后输出到逆变器或直接应用环节。太阳电池板组成的光伏阵列约占光伏发电系统总成本的70%,如何保护光伏阵列和充分提高 相似文献
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《Refocus》2003,4(4):18
RWE SCHOTT Solar have recently introduced the SunRoof◐ FS, a freestanding solar electric system for flat-roof commercial and public buildings. The new system allows users to maintain the integrity of their roofs by eliminating roof penetrations while providing an economical means of generating electricity. The system’s lightweight mounting structure (less than 4 lbs per square foot) is comprised of rugged materials and a stainless steel base that will withstand UV radiation and high temperatures as well as high winds or earthquakes. The SunRoof◐ FS system’s solar arrays are tilted to provide better power generation with maximum cooling and drainage. The open-air structure of the system allows for air circulation and cooling beneath the modules and easy access for inspection and roof maintenance. The SunRoof FS has a 5-degree tilt angle, even on flat rooftops, which improves system performance, generating up to 4% more energy than a flat array. It also has increased output due to cooler operating temperatures. The systems are available in standard 30, 45, and 100 kW sizes and can be customized to meet any energy requirements. RWE has secured a provisional patent for the SunRoof FS design, and has full patent applications for the FS design pending before US, European, and Japanese patent authorities.This is a short news story only. Visit www.re-focus.net for the latest renewable energy news. 相似文献
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6月6日上午,由全国工商联新能源商会、中科院电工研究所主办,北京泰豪智能工程有限公司和新奥光伏集成有限公司承办的"太阳能电源与智能建筑节能减排论坛"在人民大会堂隆重召开.通过国内知名专家学者的积极沟通与交流,探讨和推动环境保护活动的开展以及太阳能电源与智能建筑结合的节能减排策略.全国政协副主席、全国工商联主席黄孟复等相关领导和专家出席此次论坛. 相似文献
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This article investigates the extent to which the value of solar electricity (that is, electricity generated by photovoltaics), a form of distributed generation, would be higher under a nodal pricing system as compared to a uniform pricing system. More specifically, solar radiation and electricity market data for the period 1 January 2005–31 December 2006 are examined for locations near Mississauga, Ontario and Kingston, Ontario. The hybrid optimization model for electric renewables (HOMER) program is used for the simulation of solar electricity output. For Mississauga, the average monthly value of the solar electricity based on Ontario's uniform pricing system (the hourly Ontario energy price, or HOEP) was C$20.62. Based on nodal pricing, the average monthly value was C$27.20 per month (32% higher). For Kingston, the average monthly value of the solar electricity based on HOEP was C$23.78 per month. Based on nodal pricing, the average monthly value was C$36.03 (52% higher). Over the two-year period, the monthly differences were greatest during the summer, with a 53% spread in June in Mississauga and a 106% spread in May in Kingston. As debates regarding electricity futures progress, the importance of proper valuation of alternative generation sources continues to be critical. This research aims to contribute to discussions regarding the extent to which a nodal pricing system could facilitate the contribution of solar electricity to a sustainable electricity system in Ontario. 相似文献
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A typical diagram-configuration photovoltaic (PV) water pumping system consists of a d.c. permanent magnet motor driving a diaphragm pump via a cam. The typical efficiency is low and the lifespan short. The use of a linear d.c. motor or actuator as the drive is suggested. A higher efficiency and life expectancy could be achieved. The aims of this project were to measure the pump, evaluate possible electromagnetic configurations with a finite-element analysis (FEA) package and to evaluate different electromechanical options. The results obtained for these criteria will be discussed concluding with a choice of the best topology. 相似文献
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Yan Lai Nicolás Cordero Frank Barthel Frank Tebbe Jörg Kuhn Robert Apfelbeck Dagmar Würtenberger 《Applied Thermal Engineering》2009,29(5-6):1239-1244
With the advances in the technology of materials based on GaN, high brightness white light emitting diodes (LEDs) have flourished over the past few years and have shown to be very promising in many new illumination applications such as outdoor illumination, task and decorative lighting as well as aircraft and automobile illuminations. The objective of this paper is to investigate an active liquid cooling solution of such LEDs in an automotive headlights application. The thermal design from device to board to system level has been carried out in this research. Air cooling and passive liquid cooling methods were investigated and excluded as unsuitable, and therefore an active liquid cooling solution was selected. Several configurations of the active liquid cooling system were studied and optimisation work was carried out to find an optimum thermal performance. 相似文献
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Data on long-term performance and degradation of field-aged solar photovoltaic modules is widely recognized as necessary for continued technological improvement and market confidence. It is also important that such research should cover various geographical regions of the globe. This paper presents a study on twenty-nine (29) crystalline silicon modules deployed in grid-connected, battery-charging and water-pumping applications. The modules, installed at six different locations in Ghana were aged between 6 and 32 years. Peak power (Pmax) losses ranged from 0.8%/year – 6.5%/year. The Pmax losses were dominated by losses in fill factor (FF) and short-circuit current (Isc). Visually observable defects are also reported. 相似文献
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Karim Asali 《Refocus》2002,3(3):32
Governments, NGO's and UN organisations are increasingly convinced that renewable energies not only help to solve energy problems in Africa but are indispensable in alleviating regional disparities, social problems and bridging the digital gap. Still, many years after introducing high efficiency solar PV systems the necessary breakthrough of implementing them on a mass scale is still not a reality. Karim Asali, Kyocera Fineceramics GmbH, provides perspectives on developing solar PV in Africa. 相似文献
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This paper investigates how African governments are considering supporting and promoting the diffusion of solar PV. This issue is explored by examining so-called ‘technology action plans (TAPs)’, which were main outputs of the Technology Needs Assessment project implemented in 10 African countries from 2010 to 2013. The paper provides a review of three distinct but characteristic trajectories for PV market development in Kenya (private-led market for solar home systems), Morocco (utility-led fee-for service model) and Rwanda (donor-led market for institutional systems). The paper finds that governments’ strategies to promoting solar PV are moving from isolated projects towards frameworks for market development and that there are high expectations to upgrading in the PV value chain through local assembly of panels and local production of other system elements. Commonly identified measures include support to: local production; financing schemes; tax exemptions; establishment and reinforcement of standards; technical training; and research and development. 相似文献
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Calculation of monthly average global solar radiation on horizontal surfaces using daily hours of bright sunshine 总被引:1,自引:0,他引:1
Several statistical models calculating the monthly average global solar radiation on horizontal surfaces using the daily hours of bright sunshine have been extensively evaluated and compared for Canadian regions. Results show that Gariépy's model provides the best overall performance and Hay's model is rated next best, whereas Rietveld's model has been found to be the least accurate. Local performances of models have also been established throughout Canada that show that both Gariépy's and Hay's models perform quite well. Recommended models have been suggested for the studied regions. 相似文献
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《Energy Policy》2013
New solar Photovoltaic (PV) installations have grown globally at a rapid pace in recent years. We provide a comprehensive assessment of the cost competitiveness of this electric power source. Based on data available for the second half of 2011, we conclude that utility-scale PV installations are not yet cost competitive with fossil fuel power plants. In contrast, commercial-scale installations have already attained cost parity in the sense that the generating cost of power from solar PV is comparable to the retail electricity prices that commercial users pay, at least in certain parts of the U.S. This conclusion is shown to depend crucially on both the current federal tax subsidies for solar power and an ideal geographic location for the solar installation. Projecting recent industry trends into the future, we estimate that utility-scale solar PV facilities are on track to become cost competitive by the end of this decade. Furthermore, commercial-scale installations could reach “grid parity” in about ten years, if the current federal tax incentives for solar power were to expire at that point. 相似文献
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Dhaka, the capital of Bangladesh, is a fast growing megacity with a population of 12.8 million. Due to its tropical location, dense urban morphology and higher than average density of population, buildings in Dhaka are likely to be adversely affected by the projected changes in climate, in particular by the increases in temperature. Buildings play a vital role in most aspects of our lives and their energy consumption patterns affect climate change mitigation and adaptation strategies. It is important to understand the likely impact of the projected increases in temperature on cooling and heating requirements in buildings in future climates. In this research, global projections on changes in temperature are temporally downscaled using a statistically averaged baseline present-day hourly weather data to generate future weather data in three timeslices: 2020s, 2050s and 2080s. Time series data for the present-day and future climates are analyzed as well as heating and cooling degree-days are calculated. 相似文献