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Author: Olivier Dupré
Publisher: Springer
ISBN: 3319494570
Category : Technology & Engineering
Languages : en
Pages : 142
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Book Description
This book provides a comprehensive introduction to the thermal issues in photovoltaics. It also offers an extensive overview of the physics involved and insights into possible thermal optimizations of the different photovoltaic device technologies.In general, temperature negatively affects the efficiency of photovoltaic devices. The first chapter describes the temperature-induced losses in photovoltaic devices and reviews the strategies to overcome them. The second chapter introduces the concept of temperature coefficient, the underlying physics and some guidelines for reducing their negative impacts. Subsequent chapters offer a comprehensive and general thermal model of photovoltaic devices, and review how current and emerging technologies, mainly solar cells but also thermophotovoltaic devices, can benefit from thermal optimizations.Throughout the book, the authors argue that the energy yield of photovoltaic devices can be optimized by taking their thermal behavior and operating conditions into consideration in their design.
Author: Olivier Dupré
Publisher: Springer
ISBN: 3319494570
Category : Technology & Engineering
Languages : en
Pages : 142
Get Book Here
Book Description
This book provides a comprehensive introduction to the thermal issues in photovoltaics. It also offers an extensive overview of the physics involved and insights into possible thermal optimizations of the different photovoltaic device technologies.In general, temperature negatively affects the efficiency of photovoltaic devices. The first chapter describes the temperature-induced losses in photovoltaic devices and reviews the strategies to overcome them. The second chapter introduces the concept of temperature coefficient, the underlying physics and some guidelines for reducing their negative impacts. Subsequent chapters offer a comprehensive and general thermal model of photovoltaic devices, and review how current and emerging technologies, mainly solar cells but also thermophotovoltaic devices, can benefit from thermal optimizations.Throughout the book, the authors argue that the energy yield of photovoltaic devices can be optimized by taking their thermal behavior and operating conditions into consideration in their design.
Author: Olivier Dupré
Publisher:
ISBN:
Category :
Languages : en
Pages : 221
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Book Description
This Ph.D. thesis manuscript reports on a study about the physics of the thermal behavior of photovoltaic (PV) systems. While it is long known that the conversion efficiency of PV devices deteriorates when their temperature increases, a detailed analysis of all the mechanisms involved was not available to date in the literature. Part I of this manuscript gathers and extends the existing works on the topic in order to offer a comprehensive view of the physics involved in the temperature sensitivities of PV systems. First, temperature coefficients, which quantify the temperature dependences, are analyzed in the radiative limit (which is the fundamental limit for PV conversion). Then, the additional loss mechanisms of real PV devices are introduced and their impacts on the temperature coefficients are assessed. The existing theoretical expressions of the temperature coefficients of important solar cell parameters (namely open-circuit voltage, short-circuit current and fill factor) are reviewed. A new formulation of the temperature coefficient of the open-circuit voltage that incorporates the concept of External Radiative Efficiency (ERE) is proposed. The theoretical expressions are compared to experimental results on crystalline silicon cells from measurements made at the University of New South Wales (UNSW, Australia) and from the literature. Using the understanding of the relation between the temperature coefficients and device physics, the special cases of silicon heterojunction cells and cells made from compensated silicon are examined. Because temperature has a critical impact on the performances of PV devices, several studies aimed on the one hand at predicting the temperature of PV modules from their operating conditions and on the other hand at designing inexpensive cooling solutions. The goal of Part II of this manuscript is to propose an original approach to minimize the temperature-induced losses in PV systems. The idea is to include the operating conditions in the optimization of the system parameters in order to maximize the power produced in these conditions rather than in the Standard Test Conditions (STC). These original optimizations are based on a comprehensive thermal model of PV cells that captures all of the physical mechanisms involved in the generation of heat within the cell. Following the presentation of this thermal model, several examples of global optimization (i.e. a thermal criterion is added to the usual optical and electrical ones) are presented. Some of these examples apply to standard solar cells while others demonstrate that this kind of optimization can be applied to other PV systems such as thermophotovoltaic (TPV) converters (solar or near-field TPV). The recent trend of the PV industry towards the creation of products specifically adapted to a given use suggests that these original optimizations that take into account the system operating conditions could be implemented in the near future.
Author: Jenny Nelson
Publisher: World Scientific Publishing Company Incorporated
ISBN: 9781860943492
Category : Science
Languages : en
Pages : 363
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Book Description
An introduction to the physics of the photovoltaic cell. It covers the fundamental principles of semiconductor physics and simple models used to describe solar cell operation. It presents theoretical approaches to efficient solar cell design and examines the main practical types of solar cell
Author: Davood Naghaviha
Publisher: John Wiley & Sons
ISBN: 1119736587
Category : Science
Languages : en
Pages : 238
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Book Description
How to design a solar power plant, from start to finish In Step-by-Step Design of Large-Scale Photovoltaic Power Plants, a team of distinguished engineers delivers a comprehensive reference on PV power plants—and their design—for specialists, experts, and academics. Written in three parts, the book covers the detailed theoretical knowledge required to properly design a PV power plant. It goes on to explore the step-by-step requirements for creating a real-world PV power plant, including parts and components design, mathematical formulations and calculations, analyses, evaluations, and planning. The book concludes with a discussion of a sample solar plant design, as well as tips on how to avoid common design mistakes, and how to handle the operation and maintenance of PV power plants. Step-by-Step Design of Large-Scale Photovoltaic Power Plants also includes: Thorough introductions to the basic requirements of design, economic analyses, and investment revenue Comprehensive explorations of the requirements for feasibility study and grid connection study Introducing solar resource, and determining optimum tilt angle and module inter-row spacing Presenting methodology for design of large-scale PV plant, requirements of engineering document, and optimal design algorithm In-depth examinations for selecting PV module, inverter, string, and DC side equipment Practical discussions of system losses, as well as estimation of yearly electrical energy production, capacity factor, and performance ratio of large-scale PV plant Perfect for professionals in the solar power industry, Step-by-Step Design of Large-Scale Photovoltaic Power Plants will also earn a place in the libraries of equipment manufacturers and university professors seeking a one-stop resource for the design of PV power plants.
Author: Konstantinos Termentzidis
Publisher: CRC Press
ISBN: 9814745650
Category : Science
Languages : en
Pages : 574
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Book Description
The book is devoted to nanostructures and nanostructured materials containing both amorphous and crystalline phases with a particular focus on their thermal properties. It is the first time that theoreticians and experimentalists from different domains gathered to treat this subject. It contains two distinct parts; the first combines theory and simulations methods with specific examples, while the second part discusses methods to fabricate nanomaterials with crystalline and amorphous phases and experimental techniques to measure the thermal conductivity of such materials. Physical insights are given in the first part of the book, related with the existing theoretical models and the state of art simulations methods (molecular dynamics, ab-initio simulations, kinetic theory of gases). In the second part, engineering advances in the nanofabrication of crystalline/amorphous heterostructures (heavy ion irradiation, electrochemical etching, aging/recrystallization, ball milling, PVD, laser crystallization and magnetron sputtering) and adequate experimental measurement methods are analyzed (Scanning Thermal Microscopy, Raman, thermal wave methods and x-rays neutrons spectroscopy).
Author: Victor G. Karpov
Publisher: John Wiley & Sons
ISBN: 111965100X
Category : Science
Languages : en
Pages : 292
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Book Description
PHYSICS OF THIN-FILM PHOTOVOLTAICS Tackling one of the hottest topics in renewables, thin-film photovoltaics, the authors present the latest updates, technologies, and applications, offering the most up-to-date and thorough coverage available to the engineer, scientist, or student. It appears rather paradoxical that thin-film photovoltaics (PVs) are made of materials that seem unacceptable from the classical PV perspective, and yet they often outperform classical PV. This exciting new volume solves that paradox by switching to a new physics paradigm. Many concepts here fall beyond the classical PV scope. The differences lie in device thinness (microns instead of millimeters) and morphology (non-crystalline instead of crystalline). In such structures, the charge carriers can reach electrodes without recombination. On the other hand, thin disordered structures render a possibility of detrimental lateral nonuniformities (“recombination highways”), and their energy spectra give rise to new recombination modes. The mechanisms of thermal exchange and device degradation are correspondingly unique. The overall objective of this book is to give a self-contained in-depth discussion of the physics of thin-film systems in a manner accessible to both researchers and students. It covers most aspects of the physics of thin-film PV, including device operations, material structure and parameters, thin-film junction formation, analytical and numerical modeling, concepts of large area effects and lateral non-uniformities, physics of shunting (both shunt growth and effects), and device degradation. Also, it reviews a variety of physical diagnostic techniques proven with thin-film PV. Whether for the veteran engineer or the student, this is a must-have for any library. This outstanding new volume: Covers not only the state-of-the-art of thin-film photovoltaics, but also the basics, making this volume useful not just to the veteran engineer, but the new-hire or student as well Offers a comprehensive coverage of thin-film photovoltaics, including operations, modeling, non-uniformities, piezo-effects, and degradation Includes novel concepts and applications never presented in book format before Is an essential reference, not just for the engineer, scientist, and student, but the unassuming level of presentation also makes it accessible to readers with a limited physics background Is filled with workable examples and designs that are helpful for practical applications Is useful as a textbook for researchers, students, and faculty for understanding new ideas in this rapidly emerging field Audience: Industrial professionals in photovoltaics, such as engineers, managers, research and development staff, technicians, government and private research labs; also academic and research universities, such as physics, chemistry, and electrical engineering departments, and graduate and undergraduate students studying electronic devices, semiconductors, and energy disciplines
Author: Davide Astiaso Garcia
Publisher: MDPI
ISBN: 3036505180
Category : Technology & Engineering
Languages : en
Pages : 194
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Book Description
The energy transition is one of the key approaches in the effort to halt climate changes, and it has become even more essential in the light of the recent COVID-19 pandemic. Fostering the energy efficiency and the energy independence of the building sector is a focal aim to move towards a decarbonized society. In this context, building physics and building energy systems are fundamental disciplines based on applied physics applications in civil, architectural, and environmental engineering, including technical themes related to the planning of energy and the environment, diagnostic methods, and mitigating techniques. This Special Issue contains information on experimental studies in the following research topics: renewable energy sources, building energy analysis, rational use of energy, heat transmission, heating and cooling systems, thermofluid dynamics, smart energy systems, and energy service management in buildings.
Author: Jan Valenta
Publisher: CRC Press
ISBN: 9814463647
Category : Science
Languages : en
Pages : 441
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Book Description
Silicon is an abundant element and is produced in large quantities for the electronic industry. The falling price of this commodity also feeds the growth of solar photovoltaics (PV). However, solar cells (SCs) based on bulk semiconductors have quite limited maximum attainable performance. Therefore, new principles and materials are being investigat
Author: Joseph M. Marshall
Publisher: Springer Science & Business Media
ISBN: 9401006326
Category : Technology & Engineering
Languages : en
Pages : 361
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Book Description
The primary objective of this NATO Advanced Study Institute (ASI) was to present an up-to-date overview of various current areas of interest in the field of photovoltaic and related photoactive materials. This is a wide-ranging subject area, of significant commercial and environmental interest, and involves major contributions from the disciplines of physics, chemistry, materials, electrical and instrumentation engineering, commercial realisation etc. Therefore, we sought to adopt an inter disciplinary approach, bringing together recognised experts in the various fields while retaining a level of treatment accessible to those active in specific individual areas of research and development. The lecture programme commenced with overviews of the present relevance and historical development of the subject area, plus an introduction to various underlying physical principles of importance to the materials and devices to be addressed in later lectures. Building upon this, the ASI then progressed to more detailed aspects of the subject area. We were also fortunately able to obtain a contribution from Thierry Langlois d'Estaintot of the European Commission Directorate, describing present and future EC support for activities in this field. In addition, poster sessions were held throughout the meeting, to allow participants to present and discuss their current activities. These were supported by what proved to be very effective feedback sessions (special thanks to Martin Stutzmann), prior to which groups of participants enthusiastically met (often in the bar) to identify and agree topics of common interest.
Author: Jagdish A. Krishnaswamy
Publisher: Springer Nature
ISBN: 9811906076
Category : Science
Languages : en
Pages : 293
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Book Description
This book approaches the design of functionally superior optoelectronic devices through the use of bio-inspired nanostructures and multiscale material structures through a step-by-step approach. The book combines both the fundamental theoretical concepts involved in understanding and numerically modelling optoelectronic devices and the application of such methods in addressing challenging research problems in nanostructured optoelectronic design and fabrication. The book offers comprehensive content in optoelectronic materials and engineering and can be used as a reference material by researchers in nanostructured optoelectronic design.
