Recent Developments in Heat Transfer Fluids Used for Solar
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Solar Thermal Energy an Industry Report
Solar Thermal Energy an Industry Report . Solar Thermal Technology on an Industrial Scale The Sun is Our Source Our sun produces 400,000,000,000,000,000,000,000,000 watts of energy every second and the belief is that it will last for another 5 billion years. The United States An eSolar project in California. reached peak oil production in 1970, and there is no telling when global oil production will peak, but it is accepted that when it is gone the party is over. The sun, however, is the most reliable and abundant source of energy. This site will keep an updated log of new improvements to solar thermal and lists of projects currently planned or under construction. Please email us your comments at: [email protected] Abengoa’s PS10 project in Seville, Spain. Companies featured in this report: The Acciona Nevada Solar One plant. Solar Thermal Energy an Industry Report . Solar Thermal vs. Photovoltaic It is important to understand that solar thermal technology is not the same as solar panel, or photovoltaic, technology. Solar thermal electric energy generation concentrates the light from the sun to create heat, and that heat is used to run a heat engine, which turns a generator to make electricity. The working fluid that is heated by the concentrated sunlight can be a liquid or a gas. Different working fluids include water, oil, salts, air, nitrogen, helium, etc. Different engine types include steam engines, gas turbines, Stirling engines, etc. All of these engines can be quite efficient, often between 30% and 40%, and are capable of producing 10’s to 100’s of megawatts of power. -
Heat Transfer in Flat-Plate Solar Air-Heating Collectors
Advanced Computational Methods in Heat Transfer VI, C.A. Brebbia & B. Sunden (Editors) © 2000 WIT Press, www.witpress.com, ISBN 1-85312-818-X Heat transfer in flat-plate solar air-heating collectors Y. Nassar & E. Sergievsky Abstract All energy systems involve processes of heat transfer. Solar energy is obviously a field where heat transfer plays crucial role. Solar collector represents a heat exchanger, in which receive solar radiation, transform it to heat and transfer this heat to the working fluid in the collector's channel The radiation and convection heat transfer processes inside the collectors depend on the temperatures of the collector components and on the hydrodynamic characteristics of the working fluid. Economically, solar energy systems are at best marginal in most cases. In order to realize the potential of solar energy, a combination of better design and performance and of environmental considerations would be necessary. This paper describes the thermal behavior of several types of flat-plate solar air-heating collectors. 1 Introduction Nowadays the problem of utilization of solar energy is very important. By economic estimations, for the regions of annual incident solar radiation not less than 4300 MJ/m^ pear a year (i.e. lower 60 latitude), it will be possible to cover - by using an effective flat-plate solar collector- up to 25% energy demand in hot water supply systems and up to 75% in space heating systems. Solar collector is the main element of any thermal solar system. Besides of large number of scientific publications, on the problem of solar energy utilization, for today there is no common satisfactory technique to evaluate the thermal behaviors of solar systems, especially the local characteristics of the solar collector. -
Energies for the 21St Century
THE collEcTion 1 w The atom 2 w Radioactivity 3 w Radiation and man 4 w Energy 5 w Nuclear energy: fusion and fission 6 w How a nuclear reactor works 7 w The nuclear fuel cycle 8 w Microelectronics 9 w The laser: a concentrate of light 10 w Medical imaging 11 w Nuclear astrophysics 12 w Hydrogen 13 w The Sun 14 w Radioactive waste 15 w The climate 16 w Numerical simulation 17 w Earthquakes 18 w The nanoworld 19 w Energies for the 21st century © French Alternative Energies and Atomic Energy Commission, 2010 Communication Division Head Office 91191 Gif-sur-Yvette cedex - www.cea.fr ISSN 1637-5408. w Low-carbon energies for a sustainable future FROM RESEARCH TO INDUSTRY 19 w energies for the 21st century InnovatIng for nuclear energy DomestIcatIng solar power BIofuel proDuctIon DevelopIng BatterIes anD fuel cells thermonuclear fusIon 2 w contents century © Jack Star/PhotoLink st Innovating for nuclear ENERgY 6 The beginnings of nuclear energy in France 7 The third generation 8 Generation IV: new concepts 10 DEveloping batteries and fuel cells 25 Domesticating solar Lithium-ion batteries 26 pOwer 13 A different application for Thermal solar power 15 each battery 27 Photovoltaic solar power 16 Hydrogen: an energy carrier 29 Concentrated solar power 19 Thermonuclear fusion 31 BIOFUEL production 20 Tokamak research 33 Biomass 21 ITER project 34 Energies for the 21 2nd generation biofuels 22 Designed and produced by: MAYA press - Printed by: Pure Impression - Cover photo: © Jack Star/PhotoLink - Illustrations : YUVANOE - 09/2010 Low-carbon energies for a sustainable future 19 w Energies for the 21st century w> IntroIntroDuctIon 3 The depletion of fossil resources and global warming are encoura- ging the development of research into new energy technologies (on the left, Zoé, France’s first nuclear reactor, on the right, the national institute for solar power). -
Fulfilling the Promise of Concentrating Solar Power Low-Cost Incentives Can Spur Innovation in the Solar Market
AGENCY/PHOTOGRAPHER ASSOCIATED PRESS ASSOCIATED Fulfilling the Promise of Concentrating Solar Power Low-Cost Incentives Can Spur Innovation in the Solar Market By Sean Pool and John Dos Passos Coggin June 2013 WWW.AMERICANPROGRESS.ORG Fulfilling the Promise of Concentrating Solar Power Low-Cost Incentives Can Spur Innovation in the Solar Market By Sean Pool and John Dos Passos Coggin May 2013 Contents 1 Introduction and summary 3 6 reasons to support concentrating solar power 5 Concentrating solar power is a proven zero-carbon technology with high growth potential 6 Concentrating solar power can be used for baseload power 7 Concentrating solar power has few impacts on natural resources 8 Concentrating solar power creates jobs Concentrating solar power is low-cost electricity 9 Concentrating solar power is carbon-free electricity on a budget 11 Market and regulatory challenges to innovation and deployment of CSP technology 13 Low-cost policy solutions to reduce risk, promote investment, and drive innovation 14 Existing policy framework 15 Policy reforms to reduce risk and the cost of capital 17 Establish an independent clean energy deployment bank 18 Implement CLEAN contracts or feed-in tariffs Reinstate the Department of Energy’s Loan Guarantee Program 19 Price carbon Policy reforms to streamline regulation and tax treatment 20 Tax reform for capital-intensive clean energy technologies Guarantee transmission-grid connection for solar projects 21 Stabilize and monetize existing tax incentives 22 Further streamline regulatory approval by creating an interagency one-stop shop for solar power 23 Regulatory transparency 24 Conclusion 26 About the authors 27 Endnotes Introduction and summary Concentrating solar power—also known as concentrated solar power, concen- trated solar thermal, and CSP—is a cost-effective way to produce electricity while reducing our dependence on foreign oil, improving domestic energy-price stabil- ity, reducing carbon emissions, cleaning our air, promoting economic growth, and creating jobs. -
Water Scenarios Modelling for Renewable Energy Development in Southern Morocco
ISSN 1848-9257 Journal of Sustainable Development Journal of Sustainable Development of Energy, Water of Energy, Water and Environment Systems and Environment Systems http://www.sdewes.org/jsdewes http://www.s!ewes or"/js!ewes Year 2021, Volume 9, Issue 1, 1080335 Water Scenarios Modelling for Renewable Energy Development in Southern Morocco Sibel R. Ersoy*1, Julia Terrapon-Pfaff 2, Lars Ribbe3, Ahmed Alami Merrouni4 1Division Future Energy and Industry Systems, Wuppertal Institute for Climate, Environment and Energy, Döppersberg 19, 42103 Wuppertal, Germany e-mail: [email protected] 2Division Future Energy and Industry Systems, Wuppertal Institute for Climate, Environment and Energy, Döppersberg 19, 42103 Wuppertal, Germany e-mail: [email protected] 3Institute for Technology and Resources Management, Technical University of Cologne, Betzdorferstraße 2, 50679 Köln, Germany e-mail: [email protected] 4Materials Science, New Energies & Applications Research Group, Department of Physics, University Mohammed First, Mohammed V Avenue, P.O. Box 524, 6000 Oujda, Morocco Institut de Recherche en Energie Solaire et Energies Nouvelles – IRESEN, Green Energy Park, Km 2 Route Régionale R206, Benguerir, Morocco e-mail: [email protected] Cite as: Ersoy, S. R., Terrapon-Pfaff, J., Ribbe, L., Alami Merrouni, A., Water Scenarios Modelling for Renewable Energy Development in Southern Morocco, J. sustain. dev. energy water environ. syst., 9(1), 1080335, 2021, DOI: https://doi.org/10.13044/j.sdewes.d8.0335 ABSTRACT Water and energy are two pivotal areas for future sustainable development, with complex linkages existing between the two sectors. These linkages require special attention in the context of the energy transition. -
Analysis of Solar Community Energy Storage for Supporting Hawaii's 100% Renewable Energy Goals Erin Takata [email protected]
The University of San Francisco USF Scholarship: a digital repository @ Gleeson Library | Geschke Center Master's Projects and Capstones Theses, Dissertations, Capstones and Projects Spring 5-19-2017 Analysis of Solar Community Energy Storage for Supporting Hawaii's 100% Renewable Energy Goals Erin Takata [email protected] Follow this and additional works at: https://repository.usfca.edu/capstone Part of the Natural Resources Management and Policy Commons, Oil, Gas, and Energy Commons, and the Sustainability Commons Recommended Citation Takata, Erin, "Analysis of Solar Community Energy Storage for Supporting Hawaii's 100% Renewable Energy Goals" (2017). Master's Projects and Capstones. 544. https://repository.usfca.edu/capstone/544 This Project/Capstone is brought to you for free and open access by the Theses, Dissertations, Capstones and Projects at USF Scholarship: a digital repository @ Gleeson Library | Geschke Center. It has been accepted for inclusion in Master's Projects and Capstones by an authorized administrator of USF Scholarship: a digital repository @ Gleeson Library | Geschke Center. For more information, please contact [email protected]. This Master's Project Analysis of Solar Community Energy Storage for Supporting Hawaii’s 100% Renewable Energy Goals by Erin Takata is submitted in partial fulfillment of the requirements for the degree of: Master of Science in Environmental Management at the University of San Francisco Submitted: Received: ...................................……….. ................................…………. -
Heat Transfer (Heat and Thermodynamics)
Heat Transfer (Heat and Thermodynamics) Wasif Zia, Sohaib Shamim and Muhammad Sabieh Anwar LUMS School of Science and Engineering August 7, 2011 If you put one end of a spoon on the stove and wait for a while, your nger tips start feeling the burn. So how do you explain this simple observation in terms of physics? Heat is generally considered to be thermal energy in transit, owing between two objects that are kept at di erent temperatures. Thermodynamics is mainly con- cerned with objects in a state of equilibrium, while the subject of heat transfer probes matter in a state of disequilibrium. Heat transfer is a beautiful and astound- ingly rich subject. For example, heat transfer is inextricably linked with atomic and molecular vibrations; marrying thermal physics with solid state physics|the study of the structure of matter. We all know that owing matter (such as air) in contact with a heated object can help `carry the heat away'. The motion of the uid, its turbulence, the ow pattern and the shape, size and surface of the object can have a pronounced e ect on how heat is transferred. These heat ow mechanisms are also an essential part of our ventilation and air conditioning mechanisms, adding comfort to our lives. Importantly, without heat exchange in power plants it is impossible to think of any power generation, without heat transfer the internal combustion engine could not drive our automobiles and without it, we would not be able to use our computer for long and do lengthy experiments (like this one!), without overheating and frying our electronics. -
(CFD) Modelling and Application for Sterilization of Foods: a Review
processes Review Computational Fluid Dynamics (CFD) Modelling and Application for Sterilization of Foods: A Review Hyeon Woo Park and Won Byong Yoon * ID Department of Food Science and Biotechnology, College of Agricultural and Life Science, Kangwon National University, Chuncheon 24341, Korea; [email protected] * Correspondence: [email protected]; Tel.: +82-33-250-6459 Received: 30 March 2018; Accepted: 23 May 2018; Published: 24 May 2018 Abstract: Computational fluid dynamics (CFD) is a powerful tool to model fluid flow motions for momentum, mass and energy transfer. CFD has been widely used to simulate the flow pattern and temperature distribution during the thermal processing of foods. This paper discusses the background of the thermal processing of food, and the fundamentals in developing CFD models. The constitution of simulation models is provided to enable the design of effective and efficient CFD modeling. An overview of the current CFD modeling studies of thermal processing in solid, liquid, and liquid-solid mixtures is also provided. Some limitations and unrealistic assumptions faced by CFD modelers are also discussed. Keywords: computational fluid dynamics; CFD; thermal processing; sterilization; computer simulation 1. Introduction In the food industry, thermal processing, including sterilization and pasteurization, is defined as the process by which there is the application of heat to a food product in a container, in an effort to guarantee food safety, and extend the shelf-life of processed foods [1]. Thermal processing is the most widely used preservation technology to safely produce long shelf-lives in many kinds of food, such as fruits, vegetables, milk, fish, meat and poultry, which would otherwise be quite perishable. -
Comparison Between Concentrated Solar Power and Gas-Based Generation in Terms of Economic and Flexibility-Related Aspects in Chile
energies Article Comparison between Concentrated Solar Power and Gas-Based Generation in Terms of Economic and Flexibility-Related Aspects in Chile Catalina Hernández Moris 1 , Maria Teresa Cerda Guevara 1,* , Alois Salmon 1 and Alvaro Lorca 2 1 Fraunhofer Chile Research Foundation, Santiago 7820436, Chile; [email protected] (C.H.M.); [email protected] (A.S.) 2 Department of Electrical Engineering, Department of Industrial and Systems Engineering, UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; [email protected] * Correspondence: [email protected] Abstract: The energy sector in Chile demands a significant increase in renewable energy sources in the near future, and concentrated solar power (CSP) technologies are becoming increasingly competitive as compared to natural gas plants. Motivated by this, this paper presents a comparison between solar technologies such as hybrid plants and natural gas-based thermal technologies, as both technologies share several characteristics that are comparable and beneficial for the power grid. This comparison is made from an economic point of view using the Levelized Cost of Energy (LCOE) metric and in terms of the systemic benefits related to flexibility, which is very much required due to the current decarbonization scenario of Chile’s energy matrix. The results show that the LCOE of the four hybrid plant models studied is lower than the LCOE of the gas plant. A solar hybrid plant configuration composed of a photovoltaic and solar tower plant (STP) with 13 h of storage Citation: Hernández Moris, C.; and without generation restrictions has an LCOE 53 USD/MWh, while the natural gas technology Cerda Guevara, M.T.; Salmon, A.; Lorca, Á.G. -
A Concentrated Solar Thermal Energy System C
Florida State University Libraries Electronic Theses, Treatises and Dissertations The Graduate School 2007 A Concentrated Solar Thermal Energy System C. Christopher Newton Follow this and additional works at the FSU Digital Library. For more information, please contact [email protected] THE FLORIDA STATE UNIVERSITY FAMU-FSU COLLEGE OF ENGINEERING A CONCENTRATED SOLAR THERMAL ENERGY SYSTEM By C. CHRISTOPHER NEWTON A Thesis submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements for the degree of Master of Science Degree Awarded: Spring Semester, 2007 Copyright 2007 C. Christopher Newton All Rights Reserved The members of the Committee approve the Thesis of C. Christopher Newton defended on December 14, 2006. ______________________________ Anjaneyulu Krothapalli Professor Directing Thesis ______________________________ Patrick Hollis Outside Committee Member ______________________________ Brenton Greska Committee Member The Office of Graduate Studies has verified and approved the above named committee members. ii This thesis is dedicated to my family and friends for their love and support. iii ACKNOWLEDGEMENTS I would like to thank Professor Anjaneyulu Krothapalli and Dr. Brenton Greska for their advisement and support of this work. Through their teachings, my view on life and the world has changed. I would also like to give special thanks to Robert Avant and Bobby DePriest for their help with the design and fabrication of the apparatus used for this work. Also, I would like to thank them for teaching myself, the author, the basics of machining. Mike Sheehan and Ryan Whitney also deserve mention for their help with setting up and assembling the apparatus used in this work. The help and support from each of these individuals mentioned was, and will always be greatly appreciated. -
Convectional Heat Transfer from Heated Wires Sigurds Arajs Iowa State College
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1957 Convectional heat transfer from heated wires Sigurds Arajs Iowa State College Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Physics Commons Recommended Citation Arajs, Sigurds, "Convectional heat transfer from heated wires " (1957). Retrospective Theses and Dissertations. 1934. https://lib.dr.iastate.edu/rtd/1934 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. CONVECTIONAL BEAT TRANSFER FROM HEATED WIRES by Sigurds Arajs A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of The Requirements for the Degree of DOCTOR 01'' PHILOSOPHY Major Subject: Physics Signature was redacted for privacy. In Chapge of K or Work Signature was redacted for privacy. Head of Major Department Signature was redacted for privacy. Dean of Graduate College Iowa State College 1957 ii TABLE OF CONTENTS Page I. INTRODUCTION 1 II. THEORETICAL CONSIDERATIONS 3 A. Basic Principles of Heat Transfer in Fluids 3 B. Heat Transfer by Convection from Horizontal Cylinders 10 C. Influence of Electric Field on Heat Transfer from Horizontal Cylinders 17 D. Senftleben's Method for Determination of X , cp and ^ 22 III. APPARATUS 28 IV. PROCEDURE 36 V. RESULTS 4.0 A. Heat Transfer by Free Convection I4.0 B. Heat Transfer by Electrostrictive Convection 50 C. -
THERMODYNAMICS, HEAT TRANSFER, and FLUID FLOW, Module 3 Fluid Flow Blank Fluid Flow TABLE of CONTENTS
Department of Energy Fundamentals Handbook THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW, Module 3 Fluid Flow blank Fluid Flow TABLE OF CONTENTS TABLE OF CONTENTS LIST OF FIGURES .................................................. iv LIST OF TABLES ................................................... v REFERENCES ..................................................... vi OBJECTIVES ..................................................... vii CONTINUITY EQUATION ............................................ 1 Introduction .................................................. 1 Properties of Fluids ............................................. 2 Buoyancy .................................................... 2 Compressibility ................................................ 3 Relationship Between Depth and Pressure ............................. 3 Pascal’s Law .................................................. 7 Control Volume ............................................... 8 Volumetric Flow Rate ........................................... 9 Mass Flow Rate ............................................... 9 Conservation of Mass ........................................... 10 Steady-State Flow ............................................. 10 Continuity Equation ............................................ 11 Summary ................................................... 16 LAMINAR AND TURBULENT FLOW ................................... 17 Flow Regimes ................................................ 17 Laminar Flow ...............................................