...developemnt in Solar PV industry Anushka Pal Riga Technical University Table of Contents Introduction: 4 Efficiency of solar cell 5 Factors affecting PV cell efficiency 14 Temperature 14 Dust 16 Solar irradiance 17 Losses in a solar cell 19 Optical losses 20 Collection losses 21 Resistance losses 21 Metal/semiconductor contacts 21 PV market 21 Cost analysis for PV 23 Parameters that can improve the efficiency of solar cell 30 Conclusions 31 Table of Figures: Figure 1 Best research cell efficiency 5 Figure 2 Measured efficiencies for LFC and PERC cells on p-type silicon 7 Figure 3 Progress in the conversion efficiency of HIT solar cells 8 Figure 4 Output power trends of single-sided HIT and bifacial HIT double modules throughout the year 9 Figure 5 Efficiency ratio of solar cells from a pilot solar series (300 cells). 11 Figure 6 Effect of temperature on PV cell characteristic. 14 Figure 7 Temperature effect on PV efficiency. 15 Figure 8 Effect of dust on PV cell power output. 16 Figure 9 Effect of irradiance on PV characteristic 17 Figure 10 PV module efficiency by different irradiation level 18 Figure 11 Energy output of PV for low radiation under 400 W/m2 18 Figure 12 PV power generation related to irradiance in a day 19 Figure 13 Photons with energy lower than the band gap energy 20 Figure 14 Evolution of world PV cell/module production...
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...Lien Qty Total Qty. Cost Cost Amount Market (TK.) Price (TK.) Market Value %Port (TK.) folio PE PB Turnov er Velocit 3.56 86.85 RSI Beta Unrealize %Gai Gain n As On:02-Dec-2014 *A.C.I *Aamra Technologies Limited *BARAKATULLAH ELECTRO DY. LTD. *BSRM Steel Limited *GPH Ispat Limited *I.D.L.C *KEYA COSMETICS LTD *SQUARE PHARMA Total: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3,050 35,250 2,040 4,000 13,000 20,600 3,000 430 381.78 38.91 32.45 101.71 53.16 76.46 31.51 277.93 1,164,431.44 1,371,745.20 66,198.00 406,822.50 691,080.00 1,575,075.94 94,530.00 119,509.90 5,489,392.98 396.60 36.00 35.60 90.40 49.00 73.50 27.80 254.00 1,209,630.00 23.01 1,269,000.00 24.14 72,624.00 361,600.00 1.38 6.88 35.37 23.88 19.72 26.98 22.15 13.70 15.54 35.06 23.64 37.90 51.70 60.37 37.61 44.03 52.79 77.29 56.35 47.56 -7.21 4.50 -2.94 -0.40 -5.46 -5.44 -1.35 0.87 -2.87 45,198.56 -102,745.20 6,426.00 -54,080.00 -60,975.94 -10,289.90 -232,818.98 3.88 -7.49 9.71 -7.83 -3.87 -8.61 -4.24 1.95 1.53 5.30 3.86 2.66 1.49 6.59 3.07 525.38 716.18 23.84 22.32 49.14 727.19 17.94 187.12 -45,222.50 -11.12 637,000.00 12.12 1,514,100.00 28.80 83,400.00 109,220.00 5,256,574.00 1.59 2.08 100 -11,130.00 -11.77 Account Status Till Today Available Balance Immatured Balance Unclear Cheque Accured Interest(AI) Current Assets(CA)/(Liabilit Blocked for IPO Deposit & Withdraw Status Total Deposit Total Withdraw Realized Gain/Loss : : : : : : : : : Sector Exposure in % -4,233,652.00 0.00 0.00 137,437.98 -4,371,089.99...
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...Design and Cost Benefit Analysis of Grid Connected Solar PV System for the AUST Campus A. Muntasib Chowdhury1♦, I. Alam2♦, M. Rahman3♦, T. Rahman Khan4♦, T. Baidya5♦, A. Hasib Chowdhury6# 1 Department of EEE, AUST, Tejgaon, Dhaka, Bangladesh shovon_eee_aust@hotmail.com, 2imtialam@ymail.com, 3lemon_eee@yahoo.com, 4 tarek_eee666@yahoo.com, 5tonmoy_strings@yahoo.com # Department of EEE, BUET, Dhaka, Bangladesh 6 hasib@eee.buet.ac.bd ♦ Abstract— This paper describes a design and detailed analysis of a grid connected solar PV system for the Ahsanullah University of Science and Technology (AUST) campus. Various design considerations are discussed including the factors and parameters with limited data and information resources available for Bangladesh. Cost analysis reveals that the proposed design is economical and cost effective for the AUST campus. Keywords— Grid-tie solar, solar insolation, sunshine duration, commercial solar power system, Bangladesh. TABLE II DAILY AVERAGE BRIGHT SUNSHINE HOURS AT DHAKA CITY Month January February March April May June July August September October November December Average Daily Mean 8.7 9.1 8.8 8.9 8.2 4.9 5.1 5.8 6.0 7.6 8.6 8.9 7.55 Maximum 9.9 10.7 10.1 10.2 9.7 7.3 6.7 7.1 8.5 9.2 9.9 10.2 9.13 Minimum 7.5 7.7 7.5 7.8 5.7 3.8 2.6 4.1 4.8 6.5 7.0 7.4 6.03 I. INTRODUCTION Energy is an essential element for industrial and socioeconomic development of a country. However, the linkage between energy and environmental...
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...PV StatuS RePoRt EUR 24807 EN - 2011 The Institute for Energy provides scientific and technical support for the conception, development, implementation and monitoring of community policies related to energy. Special emphasis is given to the security of energy supply and to sustainable and safe energy production. European Commission Joint Research Centre Institute for Energy Contact information Address: Via Enrico Fermi 2749 TP 450 21027 Ispra (VA) Italy E-mail: arnulf.jaeger-waldau@ec.europa.eu Tel.: +39 0332 789119 Fax: +39 0332 789268 http://ie.jrc.ec.europa.eu www.jrc.ec.europa.eu PV Status Report 2011 Research, Solar Cell Production and Market Implementation of Photovoltaics July 2011 Arnulf Jäger-Waldau European Commission, DG Joint Research Centre, Institute for Energy, Renewable Energy Unit Via Enrico Fermi 2749; TP 450 I – 21027 Ispra (VA), Italia EUR 24807 EN Legal notice Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use, which might be made of the following information. The report does not represent any official position of the European Commission, nor do its contents prejudge any future Commission proposals in any areas of Community policy. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server http://europa.eu/ JRC 64900 EUR 24807 EN ISBN 978-92-79-20171-4 ISSN 1831-4155 doi 10.2788/87966 The report...
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...SDSU GE/OM 569 Project Management 3 April 2013 Where are we now? PMBOK – 5th Edition (2013) 1 Executing, Monitoring & Controlling Executing Process group consists of those processes performed to complete the work defined in the project management plan to satisfy the project specifications. Results may require planning updates & rebaselining Large portion of budget is expended performing the execution process group 3 Executing, Monitoring & Controlling… The Monitoring & Controlling process group consists of those processes required to track, review & orchestrate the progress & performance of the project, identifying any areas in which changes to the plan are required and initiate the corresponding changes. What work does it monitor & control? Product work Project work 4 2 Executing, Monitoring & Controlling 5 Executing, Monitoring & Controlling 6 3 The Project is Up and Running: Now What? You want what? When! I have jury duty! The software doesn’t do that? That is not what I want! We have to be done by….! The software (critical) will be late! Why not add this?! You never asked for that?!? Just have your team do it! 7 Validate Scope 8 4 Validate Scope Validate Scope is the process of formalizing acceptance of the completed project deliverables. It includes… Reviewing deliverables with the customer or sponsor to ensure they are completed satisfactorily, and Obtaining their...
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...IMPLEMENTATION OF ENERGY EFFICIENCT AND RENEWABLE ENERGY TECHNOLOGIES TOWARDS ACHIEVING ZERO ENERGY BUILDINGS ABSTRACT As the energy consumption, industrial production and automobile usage around the world increases gradually, the efforts to meet the steadily increasing energy demand would leave the environment devastated. Traditional buildings consume as much as 40% of the primary energy consumed worldwide and are major contributors for greenhouse gases. Hence, with the intention of reducing the energy usage which reduces the environmental pollution energy efficient measures have been introduced. The goal of these measures is to decrease the energy use of the building substantially and provide the building's energy needs with on-site renewable energy supply like Photovoltaics. This results in a concept called Net zero energy buildings or Zero Energy Buildings. Zero energy building (ZEB) is a building with zero energy consumption i.e., it consumes only the amount of energy generated by the renewable power on the building site. NZEBs produce zero carbon emissions annually as various renewable energy technologies are deployed on the building site. This paper addresses the energy efficient measures that can be implemented to cut down the power consumption. The energy efficient features implemented in ZEBs for energy savings is justified with a case study. I. INTRODUCTION The environmental effects that Carbon dioxide (CO2) emissions across countries at different levels...
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...CHAPTER 21 Accounting for Leases ASSIGNMENT CLASSIFICATION TABLE (BY TOPIC) | | |Brief Exercises | | | Concepts for | |Topics |Questions | |Exercises |Problems |Analysis | |*1. Rationale for leasing. |1, 2, 4 | | | |1, 2 | |*2. Lessees; classification |3, 5, 7, |1, 2, 3, |1, 2, 3, |1, 2, 3, 4, |1, 2, 3, | |of leases; accounting by lessees. |8, 14 |4, 5 |5, 7, 8, 11, 12, |6, 7, 8, 9, 11, 12,|4, 5, 6 | | | | |13, 14 |14, | | | | | | |15, 16 | | |*3. Disclosure of leases. |19 | | |2, 4, 5, |2, 3, 5 | | | | | |7, 8 | | |*4. Lessors; classification ...
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...Chapter 9 Monopoly As you will recall from intermediate micro, monopoly is the situation where there is a single seller of a good. Because of this, it has the power to set both the price and quantity of the good that will be sold. We begin our study of monopoly by considering the price that the monopolist should charge.1 9.1 Simple Monopoly Pricing The object of the firm is to maximize profit. However, the price that the monopolist charges affects the quantity it sells. The relationship between the quantity sold and the price charged is governed by the (aggregate) demand curve q (p). Note, in order to focus on the relationship between q and p, we suppress the wealth arguments in the aggregate demand function. We can thus state the monopolist’s problem as follows: max pq (p) − c (q (p)) . p Note, however, that there is a one-to-one correspondence between the price charged and the quantity the monopolist sells. Thus we can rewrite the problem in terms of quantity sold instead of the price charged. Let p (q) be the inverse demand function. That is, p (q (p)) = p. The firm’s profit maximization problem can then be written as max p (q) q − c (q) . q It turns out that it is usually easier to look at the problem in terms of setting quantity and letting price be determined by the market. For this reason, we will use the quantity-setting approach. 1 References: Tirole, Chapter 1; MWG, Chapter 12; Bulow, “Durable-Goods Monopolists,” JPE 90(2) 314-332. 233 Nolan...
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...Photovoltaic Power Systems Compiled by Tracy Dahl Overview Photovoltaic (PV) technology converts one form of energy (sunlight) into another form of energy (electricity) using no moving parts, consuming no conventional fossil fuels, creating no pollution, and lasting for decades with very little maintenance. The use of a widely available and reasonably reliable fuel source—the sun—with no associated storage or transportation difficulties and no emissions makes this technology eminently practicable for powering remote scientific research platforms. Indeed, numerous examples of successfully deployed systems are already available. The completely scaleable nature of the technology also lends itself well to varying power requirements–from the smallest autonomous research platforms to infrastructure-based systems. This technology can be limited, however, by annual fluctuations in solar insolation, especially at extreme latitudes. Based on semiconductor technology, solar cells operate on the principle that electricity will flow between two semiconductors when they are put into contact with each other and exposed to light (photons). This phenomenon, known as the photovoltaic effect, was first discovered by Edmund Becquerel in 1839. Actual development of PV technology began in the 1950s and gained greater impetus through the NASA space program during the 1960s. Research continues today at national laboratories and within private industry, focusing on increasing conversion efficiencies...
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...Energy journal homepage: www.elsevier.com/locate/energy Renewable energy in India: Status and potential Indu R. Pillai, Rangan Banerjee* Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India a r t i c l e i n f o Article history: Received 16 May 2007 Received in revised form 20 August 2008 Accepted 15 October 2008 Available online xxx Keywords: Renewable Energy Diffusion Potential India a b s t r a c t A majority of the Indian population does not have access to convenient energy services (LPG, electricity). Though India has made significant progress in renewable energy, the share of modern renewables in the energy mix is marginal. This paper reviews the status and potential of different renewables (except biomass) in India. This paper documents the trends in the growth of renewables in India and establishes diffusion model as a basis for setting targets. The diffusion model is fitted tot the past trends for wind, small hydro and solar water heating and is used to establish future targets. The economic viability and green house gas (GHG) saving potential is estimated for each option. Several renewables have high growth rates, for example wind, Photovoltaic (PV) module manufacture and solar water heaters. New technologies like Tidal, OTEC, Solar thermal power plants and geothermal power plants are at the demonstration stage and future dissemination will depend on the experience of these projects. Ó 2009 Elsevier Ltd. All...
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...ec rg 2040 Ene 2035 es 2045 chn rs olo g y P e p Technology Roadmap Solar Photovoltaic Energy Secure Sustainable Together 2014 edition INTERNATIONAL ENERGY AGENCY The International Energy Agency (IEA), an autonomous agency, was established in November 1974. Its primary mandate was – and is – two-fold: to promote energy security amongst its member countries through collective response to physical disruptions in oil supply, and provide authoritative research and analysis on ways to ensure reliable, affordable and clean energy for its 29 member countries and beyond. The IEA carries out a comprehensive programme of energy co-operation among its member countries, each of which is obliged to hold oil stocks equivalent to 90 days of its net imports. The Agency’s aims include the following objectives: n Secure member countries’ access to reliable and ample supplies of all forms of energy; in particular, through maintaining effective emergency response capabilities in case of oil supply disruptions. n Promote sustainable energy policies that spur economic growth and environmental protection in a global context – particularly in terms of reducing greenhouse-gas emissions that contribute to climate change. n Improve transparency of international markets through collection and analysis of energy data. n Support global collaboration on energy technology to secure future energy supplies and mitigate their environmental impact, including...
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...Given SunPower’s position as the producer of the world’s most efficient solar cells, also known as photovoltaics or PV, and recent forecasts that solar power might be on the edge of explosive growth, he knew that he’d be asked some tough questions. Werner wondered how fast the solar power industry was likely to grow and how long SunPower’s advantage was likely to last. How could SunPower compete with much larger companies like Sharp and Q-Cells? Or with the niche “technology play” firms that were springing up? How could SunPower’s current advantage be turned into an enduring competitive edge? As the sun began to rise, Werner picked up the pace again, and began jogging home. Environmental Issues One of the most important drivers of the world’s renewed interest in solar power was its ability to offer energy independence in combination with significant environmental benefits. After all, the earth received more energy from the sun than humans consumed throughout an entire year. Since the burning of fossil fuels generated a number of noxious substances including SO2, NO, NO2, and particulates, concerns for human and environmental health had driven interest in solar power from its earliest days. But evidence that rising concentrations of CO2 in the earth’s atmosphere could pose large long-term environmental risks had significantly increased interest in the technology. This case was prepared by Professor Rebecca M. Henderson, Joel Conkling and Scott Roberts. Professor Henderson...
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...PROGRESS IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS Prog. Photovolt: Res. Appl. (2012) Published online in Wiley Online Library (wileyonlinelibrary.com). DOI: 10.1002/pip.1255 PAPER PRESENTED AT 26TH EU PVSEC, HAMBURG, GERMANY 2011 Solar cell generations over 40% efficiency R. R. King*, D. Bhusari, D. Larrabee, X.-Q. Liu, E. Rehder, K. Edmondson, H. Cotal, R. K. Jones, J. H. Ermer, C. M. Fetzer, D. C. Law and N. H. Karam Spectrolab, Inc., 12500 Gladstone Ave, Sylmar, CA 91342, USA ABSTRACT Multijunction III-V concentrator cells of several different types have demonstrated solar conversion efficiency over 40% since 2006, and represent the only third-generation photovoltaic technology to enter commercial power generation markets so far. The next stage of solar cell efficiency improvement, from 40% to 50%-efficient production cells, is perhaps the most important yet, since it is in this range that concentrator photovoltaic (CPV) systems can become the lowest cost option for solar electricity, competing with conventional power generation without government subsidies. The impact of 40% and 50% cell efficiency on cost-effective geographic regions for CPV systems is calculated in the continental US, Europe, and North Africa. We take a systematic look at a progression of multijunction cell architectures that will take us up to 50% efficiency, using modeling grounded in well-characterized solar cell materials systems of today’s 40% cells, discussing the theoretical, materials science, and...
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...ENERGY Renewable Energy: An Overview DOE/GO-102001-1102 FS175 March 2001 EFFICIENCY AND RENEWABLE ENERGY What is Renewable Energy? Renewable energy uses energy sources that are continually replenished by nature—the sun, the wind, water, the Earth’s heat, and plants. Renewable energy technologies turn these fuels into usable forms of energy—most often elec- tricity, but also heat, chemicals, or mechanical power. Why Use Renewable Energy? Today we primarily use fossil fuels to heat and power our homes and fuel our cars. It’s convenient to use coal, oil, and natural gas for meeting our energy needs, but we have a limited supply of these fuels on the Earth. We’re using them much more rapidly than they are being created. Even- tually, they will run out. And because of safety concerns and waste disposal prob- lems, the United States will retire much of its nuclear capacity by 2020. In the mean- time, the nation’s energy needs are expected to grow by 33 percent during the next 20 years. Renewable energy can help fill the gap. Even if we had an unlimited supply of fos- sil fuels, using renewable energy is better for the environment. We often call renew- able energy technologies “clean” or “green” because they produce few if any pollutants. Burning fossil fuels, however, sends greenhouse gases into the atmos- phere, trapping the sun’s heat and con- tributing to global warming. Climate scientists generally agree that the Earth’s average temperature has risen in the past century...
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...experience Before applying for this position, I used to worked as a interpreter and Japanese teacher in Viet-sse joint stock company which is related to Japan oversea study. My main task is to teach Japanese for Vietnam students and interpret the interviews between Japan schools and Vietnam students. After that I realize this work as a interpreter is suitable for me. So I decided to apply this job in your company. 3. Why do you apply for this position I choose Honda company because your company has professional working environment that helps me so much in future job. And if I am employed for this position , not only my Japansese but also my English–language proficiency will be improved. Moreover, I will gain valuable knowledge about the technology that I am interested in. Honda Vietnam appreciates highly individuals capacity and focuses on developing and training good employees. And I expect the company culture as well as the prospects in the Automotive, Motor – the good base for me to promote ability and my career. Bà muốn cháu trong phần đầu giới thiệu, cháu hãy nói những tính cách cơ bản của cháu ra, rồi lấy những cái...
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