Download or read book Etude exp rimentale des champs de temp rature et de vitesse d un bardage thermique written by Pascal Yerro and published by . This book was released on 1997 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: La convection naturelle dans un bardage thermique aménage en façade ou en toiture est une alternative intéressante pour la protection solaire de l'habitat en climat tropical humide. Dans ce travail, le dispositif expérimental simulant le bardage thermique est à échelle réduite (dimensions inferieures au mètre). Il est constitué d'une lame d'air formée entre deux plaques verticales et parallèles dont l'une est chauffée à flux constant. Des mesures de température sont effectuées aux parois avec des thermocouples et dans la lame d'air par interférométrie holographique en temps réel (ihtr). Les vitesses d'écoulement sont mesurées par anémométrie laser a effet doppler (lda). L'échauffement des plaques est analysé en fonction du flux impose, de l'épaisseur de la lame d'air et de l'émissivité des plaques. L'étude des interferogrammes et des champs de vitesse met en évidence le caractère instable de l'écoulement à partir de la moitié de la hauteur du canal. Concernant l'une des configurations étudiées, nos résultats expérimentaux sont comparés à ceux de deux modelés numériques traitant les cas d'écoulements laminaires stables et bidimensionnels. Les champs de vitesse numériques et expérimentaux concordent bien dans la première moitié du canal lorsque le profil de vitesse de l'air a l'entrée du conduit est supposé uniforme. Les écarts entre les résultats expérimentaux et numériques s'accentuent avec l'altitude et résultent probablement de la tridimensionnalité et des instabilités de l'écoulement. Nos résultats expérimentaux permettent aussi une évaluation des flux convectifs à l'aide de trois méthodes différentes : 1) le bilan énergétique pariétal, 2) le gradient thermique a l'interface paroi-fluide, 3) le bilan de puissance dans un volume d'air adjacent à la plaque chauffée.

Download or read book New and Renewable Technologies for Sustainable Development written by Naim Hamdia Afgan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable development encompasses economic, social, and ecological perspectives of conservation and change in natural resources. It is generally defined as development that meets the needs of the present without compromising the ability of future generations to meet their own needs. This definition is based on the ethical imperative of equity within and between generations. Moreover, apart from meeting; "the basic needs of all"; sustainable development implies sustaining the natural life support systems on Earth, and extending to all the opportunity to satisfy their aspirations for a better life. Hence, sustainable development is more precisely defined as a process of change in which the exploitation of resources, the direction of investments, the orientation of technological development, and institutional change are all in harmony and enhance both current and future potential to meet human needs and aspiration. To date, various definitions and stationary-state criteria of sustainability have been proposed. Many authors have been concerned with only part of the problem, such as the technological assumptions, the ability to substitute natural resources in economic transformation processes, and the resilience and importance of ecological processes. But, the social dimension did not receive the same attention, and has not been adequately integrated into formal analysis. The engineering community has to play an important role in sustainable development with appropriate evaluation of the engineering systems. In this respect energy, water and environment systems require multi-criteria evaluation methods for the assessment of the economic, environmental and social aspect of the systems.

Download or read book Etude exp rimentale de la convection naturelle dans un canal inclin Application au bardage thermique written by Nathalie Miolard and published by . This book was released on 2002 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE EXPERIMENTALE DES ECOULEMENTS NON DEVELOPPES DE CONVECTION NATURELLE DANS UN CANAL INCLINE PAR RAPPORT AU CHAMP DE PESANTEUR,CONSTITUE DE PLAQUES PLANES PARALLELES ET CHAUFFE ASYMETRIQUEMENT A FLUX CONSTANT EST EFFECTUEE.LE DOMAINE D'APPLICATION CONCERNE LA CLIMATISATION PASSIVE DANS L'HABITAT TROPICAL.DES MESURES DE CHAMPS DE VITESSE ET DE TEMPERATURE SONT EFFECTUEES DANS LE CANAL INCLINE EN UTILISANT RESPECTIVEMENT L'ANENOMETRIE LASER DOPPLER ET DES THERMOCOUPLES FINS.L'ANALYSE DES CHAMPS DE VITESSE DE L'ECOULEMENT CONDUIT A UNE CORRELATION ENTRE LE DEBIT D'AIR DANS LE CANAL INCLINE ET LE NOMBRE DE GRASHOF PRENANT EN COMPTE L'EFFET DE L'INCLINAISON .CETTE CORRELATION ETEND CETTE CORRELATIONS PROPOSES PAR D'AUTRES AUTEURS SUR LA BASE D'ETUDES NUMERIQUES EFFECTUEES POUR UN CANAL VERTICAL.L'ANALYSE DES TRANSFERTS THERMIQUES DANS LE CANAL INCLINE CONDUIT A DES CORRELATIONS NUSSELT-GRASHOF PRENANT EN COMPTE L'EFFET DE L'INCLINAISON QUI INCLUENT EN PARTICULIER CELLES PROPOSEES SUR LA BASE DES RESULTATS DISPONIBLES DANS LA LITTERATURE POUR LE CANAL VERTICAL. THE RESULTS OF AN EXPERIMENTAL STUDY OF THE DEVELOPING NATURAL CONVECTION FLOW,IN AN INCLINED CHANNEL HEATED ASYMMETRICALLY USING A CONSTANT HEAT FLUX,ARE PRESENTED.THIS PROBLEM DEALS WITH PASSIVE COOLING OF HOUSES IN TROPICAL REGIONS. EXPERIMENTAL MEASUREMENTS OF VELOCITY AND TEMPERATURE ARE PERFORMED IN THE CHANNEL USING LASER DOPPLER ANEMOMETRY AND FINE THERMOCOUPLES RESPECTIVELY.AN ANALYSIS OF THE VELOCITY PROFILES LEADS TO A CORRELATION BETWEN THE MASS FLOW RATE AND THE GRASHOF NUMBER WHICH TAKES INTO ACCOUNT THE INCLINATION EFFECT.THE CORRESPONDING EQUATION EXTENDS THE ONE PROPOSED BY OTHER AUTHORS ON THE BASIS OF NUMERICAL COMPUTATIONS PERFORMED IN THE CASE OF A VERTICAL CHANNEL.AN ANALYSIS OF HEAT TRANSFERTS IN THE CHANNEL LEADS TO NUSSELT-GRASHOF CORRELATIONS INCLUDING THE INCLINATION EFFECT WHICH ALSO EXTEND THE CORRELATIONS PROPOSED IN THE LITERATUREFOR VERTICAL CHANNELS.

Download or read book Etude exp rimentale de la convection naturelle dans un canal d air inclin application au bardage thermique written by Nathalie Miolard and published by . This book was released on 2002 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE EXPERIMENTALE DES ECOULEMENTS NON DEVELOPPES DE CONVECTION NATURELLE DANS UN CANAL INCLINE PAR RAPPORT AU CHAMP DE PESANTEUR,CONSTITUE DE PLAQUES PLANES ET CHAUFFE ASYMETRIQUEMENT A FLUX CONSTANT EST EFFECTUEE.LE DOMAINE D'APPLICATION CONCERNE LA CLIMATISATION PASSIVE DANS L'HABITAT TROPICAL. DES MESURES DE CHAMPS DE VITESSE ET DE TEMPERATURE SONT EFFECTUEES DANS LE CANAL INCLINE EN UTILISANT RESPECTIVEMENT L'ANENOMETRIE LASER DOPPLER ET DES THERMOCOUPLES FINS COMPENSES .L'ANALYSE DES CHAMPS DE VITESSE DE L'ECOULEMENT CONDUIT A UNE CORRELATION ENTRE LE DEBIT D'AIR DANS LE CANAL INCLINE ET LE NOMBRE DE GRASHOF PRENANT EN COMPTE L'EFFET DE L'INCLINAISON .CETTE CORRELATION ETEND LES CORRELATIONS PROPOSES PAR D'AUTRE AUTEURS SUR LA BASE D'ETUDES NUMERIQUES EFFECTUEES POUR UN CANAL VERTICAL.L'ANALYSE DES TRANFERTS THERMIQUES DANS LE CANAL INCLINE A DES CORRELATIONS NUSSELT-GRASHOF PRENANT EN COMPTE L'EFFET DE L'INCLINAISON QUI INCLUENT EN PARTICULIER CELLES PROPOSEES SUR LA BASE DES RESULTATS DISPONIBLES DANS LA LITTERATURE POUR LE CANAL VERTICAL. THE RESULTS OF AN EXPERIMENTAL STUDY OF THE DEVELOPING NATURAL CONVECTION FLOW,IN AN INCLINED CHANNEL HEATED ASYMMETRICALLY USING A CONSTANT HEAT FLUX,ARE PRESENTED.THIS PROBLEM DEALS WITH PASSIVE COOLING OF HOUSES IN TROPICAL REGIONS. EXPERIMENTAL MEASUREMENTS OF VELOCITY AND TEMPERATURE ARE PERFORMED IN THE CHANNEL USING LASER DOPPLER ANEMOMETRY AND FINE THERMOCOUPLES RESPECTIVELY.AN ANALYSIS OF THE VELOCITY PROFILES LEADS TO A CORRELATION BETWEEN THE MASS FLOW RATE AND THE GRASHOF NUMBER WHICH TAKES INTO ACCOUNT THE INCLINATION EFFECT.THE CORRESPONDING EQUATION EXTENDS THE ONE PROPOSED BY OTHER AUTHORS ON THE BASIS OF NUMERICAL COMPUTATIONS PERFORMED IN THE CASE OF A VERTICAL CHANNEL.AN ANALYSIS OF HEAT TRANSFERS IN THE CHANNEL LEADS TO NUSSELT-GRASHOF CORRELATIONS INCLUDING THE INCLINATION EFFECT WHICH ALSO EXTEND THE CORRELATIONS PROPOSED IN THE LITERATURE FOR VERTICAL CHANNELS.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Handbook of Aerospace Electromagnetic Compatibility written by Dr. Reinaldo J. Perez and published by John Wiley & Sons. This book was released on 2018-11-30 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource that explores electromagnetic compatibility (EMC) for aerospace systems Handbook of Aerospace Electromagnetic Compatibility is a groundbreaking book on EMC for aerospace systems that addresses both aircraft and space vehicles. With contributions from an international panel of aerospace EMC experts, this important text deals with the testing of spacecraft components and subsystems, analysis of crosstalk and field coupling, aircraft communication systems, and much more. The text also includes information on lightning effects and testing, as well as guidance on design principles and techniques for lightning protection. The book offers an introduction to E3 models and techniques in aerospace systems and explores EMP effects on and technology for aerospace systems. Filled with the most up-to-date information, illustrative examples, descriptive figures, and helpful scenarios, Handbook of Aerospace Electromagnetic Compatibility is designed to be a practical information source. This vital guide to electromagnetic compatibility: • Provides information on a range of topics including grounding, coupling, test procedures, standards, and requirements • Offers discussions on standards for aerospace applications • Addresses aerospace EMC through the use of testing and theoretical approaches Written for EMC engineers and practitioners, Handbook of Aerospace Electromagnetic Compatibility is a critical text for understanding EMC for aerospace systems.

Download or read book Food Fray written by Lisa H. WEASEL Ph.D. and published by AMACOM Div American Mgmt Assn. This book was released on 2008-12-10 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than ten years ago, the first genetically modified foods took their place on the shelves of American supermarkets. But while American consumers remained blissfully unconcerned with the new products that suddenly filled their kitchens, Europeans were much more wary of these “Frankenfoods.” When famine struck Africa in 2002, several nations refused shipments of genetically modified foods, fueling a controversy that put the issue on the world's political agenda for good. In Food Fray, esteemed molecular biologist Dr. Lisa H. Weasel brings readers into the center of this debate, capturing the real-life experiences of the scientists, farmers, policymakers and grassroots activists on the front lines. Here she combines solid scientific knowledge and a gripping narrative to tell the real story behind the headlines and the hype. Seminal and cutting-edge, Food Fray enlightens and informs and will allow readers to make up their own minds about one of the most important issues facing us today.

Download or read book Modeling Uncertainty in the Earth Sciences written by Jef Caers and published by John Wiley & Sons. This book was released on 2011-05-25 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling Uncertainty in the Earth Sciences highlights the various issues, techniques and practical modeling tools available for modeling the uncertainty of complex Earth systems and the impact that it has on practical situations. The aim of the book is to provide an introductory overview which covers a broad range of tried-and-tested tools. Descriptions of concepts, philosophies, challenges, methodologies and workflows give the reader an understanding of the best way to make decisions under uncertainty for Earth Science problems. The book covers key issues such as: Spatial and time aspect; large complexity and dimensionality; computation power; costs of 'engineering' the Earth; uncertainty in the modeling and decision process. Focusing on reliable and practical methods this book provides an invaluable primer for the complex area of decision making with uncertainty in the Earth Sciences.

Download or read book Clean Energy Nation written by Gerald McNerney and published by AMACOM Div American Mgmt Assn. This book was released on 2012 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Americans are already feeling the pressures of the current energy situation, and many of us are ready to make a change. Clean Energy Nation is a timely and hopeful look at an issue we can't afford to ignore. --Book Jacket.

Download or read book Grammar and Proofreading Course written by Pam Helling and published by AMACOM Div American Mgmt Assn. This book was released on 1992-08-21 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positive, practical techniques for achieving a more professional writing style. Here are the "how to" keys of writing-from putting the first words on paper to the final polishing and proofreading. Readers will learn how to edit their writing for improved clarity, cut excess words, use transitional phrases, recognize and correct run-on sentences and overcome procrastination and impulsive writing. Readers will learn how to: Identify the key components of any well-written business document Cut excess words and phrases from your writing Use transitional words and phrases Avoid misplaced and dangling modifiers and split infinitives Use commas, semicolons, colons, dashes, and parentheses Use slash marks, ellipsis marks, quotation marks, italics, and brackets Recognize and correct run-on sentences Proofread your writing for clarity of meaning Overcome the two common writing problems that waste time and money-procrastination and impulsive writing. This is an ebook version of the AMA Self-Study course. If you want to take the course for credit you need to either purchase a hard copy of the course through amaselfstudy.org or purchase an online version of the course through www.flexstudy.com.

Download or read book Green Tech written by Lawrence WEBBER and published by AMACOM Div American Mgmt Assn. This book was released on 2009-07-28 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: With today’s electronic systems consuming massive amounts of energy, and improper disposal of old equipment threatening to release dangerous toxicity into the atmosphere, any company whose IT department isn’t actively working to shrink its carbon footprint isn’t just hurting the environment...it is also probably wasting money. Green Tech provides readers with practical, easily implemented strategies for sustainable computing, showing them how to: • build a business case to influence their organization's green strategy • reduce costs and improve equipment utilization while maintaining current customer service levels • identify old equipment at all levels, as well as suitable green replacements • virtualize servers • find alternative methods for data center cooling • conduct an energy audit and establish an energy baseline • determine the best options for recycling or donating old equipment Filled with realistic, cost-efficient ideas, this book shows that going green isn’t just the right thing to do, but also a good business strategy.

Download or read book Theory Building in Applied Disciplines written by Richard A. Swanson and published by Berrett-Koehler Publishers. This book was released on 2013-08-05 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory matters in applied disciplines—fields that apply scholarly research to professional practice, such as management, social work, health care, human resource development, education, and many others. Because these disciplines deal with human beings in the real world, a flawed theory can result in actual harm to people and institutions. When faced with a professional problem, practitioners resort to the latest fad or simply throw everything and anything at it because of the lack of sound theory. Scholars deal with problems by slicing them into small segments to study them but fail to address the practical implications. What's needed is a way to unite research and practice to create robust theory. This is exactly what Richard Swanson and Thomas Chermack offer here: a complete, five-step method for developing sound, field-tested theory in applied disciplines. Unlike many existing methods, which cover only the initial conceptualization of a theory, the authors offer a complete approach, from conceptualizing a theory to creating relevant assessment criteria, establishing a research agenda to test the theory's validity, applying the theoretical concepts in the real world, and using that experience to further refine and improve the theory. The method is not restricted to any single discipline, nor is it beholden to any research ideology. Swanson and Chermack provide a set of tools for each phase of the process, making this book accessible and applicable to a wide audience. And in addition to examples in each chapter, they offer two extended case examples of complete theory building. With flawed theories impeding the development of many applied disciplines, this book is desperately needed.

Download or read book Overfished Ocean Strategy written by Nadya Zhexembayeva and published by Berrett-Koehler Publishers. This book was released on 2014-06-02 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Business is waking up to a global shortage of resources of every kind. Raw materials are running out, whether in Tokyo or Quito. While businesses have toyed with the idea of sustainability as a means to market to eco-minded consumers, this book shows that scarcity must become central to their thinking and the key driver of strategic innovation"--

Download or read book Management and Mitigation of Acid Mine Drainage in South Africa written by Mujuru, Munyaradzi and published by Africa Institute of South Africa. This book was released on 2017-02-03 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: South Africa is facing the increasing challenge of acid mine drainage (AMD) whose genesis is the country’s mining history, which paid limited attention to post-mining mine site management. In mineral resource-rich Africa, this has emerged as one of the most daunting challenges of our time. South Africa has been bold in its approach to mitigating this problem, although the challenge is multi-faceted. On a positive note, substantial research has been conducted to confront the challenge. However, thus far, the research has been largely fragmented. This book builds on the work that has been done, but also provides a refreshing multi-disciplinary approach that is useful in addressing the AMD challenges that South Africa and the continent face. Whilst addressing the problem as a scientific and engineering challenge, the book also exposes the economic, policy and legal challenges involved in addressing the problem. The book concludes, quite uniquely, that AMD is an opportunity that can be used by South Africa and Africa to solve problems, such as acute water shortage, as well as mineral recovery operations.

Download or read book Absolutely Small written by Michael D. Fayer and published by HarperChristian + ORM. This book was released on 2010-06-16 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Absolutely Small presents (and demystifies) the world of quantum science like no book before. Physics is a complex, daunting topic, but it is also deeply satisfying?even thrilling. When liberated from its mathematical underpinnings, physics suddenly becomes accessible to anyone with the curiosity and imagination to explore its beauty. Science without math? It’s not that unusual. For example, we can understand the concept of gravity without solving a single equation. So for all those who may have pondered what makes blueberries blue and strawberries red; for those who have wondered if sound really travels in waves; and why light behaves so differently from any other phenomenon in the universe, it’s all a matter of quantum physics. This book explores in considerable depth scientific concepts using examples from everyday life, such as: particles of light, probability, states of matter, what makes greenhouse gases bad Challenging without being intimidating, accessible but not condescending, Absolutely Small develops your intuition for the very nature of things at their most basic and intriguing levels.

Download or read book Rooftop Revolution written by Danny Kennedy and published by Berrett-Koehler Publishers. This book was released on 2012-09-03 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is the truth that the powerful Dirty Energy public relations machine doesn't want you to know: the ascent of solar energy is upon us. Solar-generated electricity has risen exponentially in the last few years and employment in the solar industry has doubled since 2009. Meanwhile, electricity from coal has declined to pre-World War II levels as the fossil fuel industry continues to shed jobs. Danny Kennedy systematically refutes the lies spread by solar's opponents—that it is expensive, inefficient, and unreliable; that it is kept alive only by subsidies; that it can't be scaled; and many other untruths. He shows that we need a rooftop revolution to break the entrenched power of the coal, oil, nuclear, and gas industries Solar energy can create more jobs, return our nation to prosperity, and ensure the sustainability and safety of our planet. Now is the time to move away from the dangerous energy sources of the past and unleash the amazing potential of the sun.

Download or read book It s Not the Size of the Data It s How You Use It written by Koen Pauwels and published by AMACOM. This book was released on 2014-03-26 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this invaluable resource, discover how to conduct smarter marketing strategies using analytics and dashboards to get the most out of your data. Did you know that your business already has the world’s greatest information-tracking team working tirelessly for you 24/7 to gather all the info you could possibly need to find your next customers? Between brand tracking, CRM programs, and online behavior tracking, as well as the always-dependable trade shows and satisfaction studies, mounds of marketing metrics are being generated for you across various touchpoints and channels. Locked in the vast quantity of information are accurate, data-driven answers to every marketing question--and analytic dashboards are the key to finding it all. In It’s Not the Size of the Data--It’s How You Use It, marketing expert Koen Pauwels introduces you to these transformative web-based tools that gather, synthesize, and visually display essential data in real time, directly connecting marketing with performance. He then supplies a simple yet rigorous methodology that explains step by step how to: Gain crucial IT support Build a rock-solid database Select key leading performance indicators Design the optimal dashboard layout Use marketing analytics to improve decisions and reap rewards There is simply too much customer-produced information out there today for marketing teams to go with gut decisions or the same old standbys. Dashboard analytics will bring scientific precision and insight to the marketing efforts of any size organization, in any industry, and turn this eye-popping data into a specific plan of attack.