Evaluacion Y Comparacion De Dos Diferentes Tipos De Colectores Solares Termicos

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Evaluación y comparación de dos diferentes tipos de colectores solares térmicos

Author : Carlos Raúl Riffo Agurto
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (793 download)

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Book Synopsis Evaluación y comparación de dos diferentes tipos de colectores solares térmicos by : Carlos Raúl Riffo Agurto

Download or read book Evaluación y comparación de dos diferentes tipos de colectores solares térmicos written by Carlos Raúl Riffo Agurto and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: En este trabajo se presenta la comparación de los resultados de un estudio de eficiencia en estado estacionario realizado a dos diferentes tipos de colectores solares térmicos siendo uno de placas planas y otro de tubos de vacío. Los resultados experimentales se reflejan en figuras, las cuales ilustran la eficiencia de ambos colectores solares a un mismo nivel de radiación. Se detallan las expresiones de cálculo de parámetros térmicos como F\U+2019\UL y F\U+2019\(ta), con valores de -7,87 Wm-2C-1 y 68 % para el colector solar plano y para el Heat pipe -3,01 Wm-2C-1 u un 53,1 % respectivamente. Estos parámetros térmicos dan una caracterización del comportamiento de los dos diferentes colectores solares térmicos y son útiles para el diseño y la caracterización de instalaciones solares de calentamiento de agua.

Colectores solares de placa plana

Author : Franklin Uriel Parás Hernández
Publisher :
ISBN 13 :
Total Pages : 307 pages
Book Rating : 4.:/5 (97 download)

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Book Synopsis Colectores solares de placa plana by : Franklin Uriel Parás Hernández

Download or read book Colectores solares de placa plana written by Franklin Uriel Parás Hernández and published by . This book was released on 2011 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: El presente trabajo es un análisis de algunos de los aspectos de los colectores solares de placa plana como; su funcionamiento mecánico, rendimiento térmico, la respuesta dinámica, sus pérdidas ópticas, entre otros. Así mismo se analizan y discuten distintos métodos de prueba para la evaluación de estos sistemas. Primero se da una breve introducción a este campo de la ciencia presentado algunas de las motivaciones que pueden llevar a realizar este tipo de investigaciones. Enseguida, se presentan los antecedentes teóricos principales requeridos para desarrollar el análisis. Así como para poder entender y llevar a cabo métodos de prueba correctos, y que sean validos para una evaluación de desempeño. En el capítulo tres se presenta una lista de trabajos previos que de alguna manera sirvieron de apoyo para la realización de esta tesis. De los cuales el realizado por la Universidad de Wisconsin en Madison fue utilizado como guía para las pruebas experimentales. Enseguida se presenta el marco teórico completo del modelo del colector solar de placa plana. Desde el balance de energía sobre todo el sistema hasta la caracterización final del colector. La siguiente parte es el estudio del estándar ASHRAE 93-2003 y su interpretación. En el capítulo cinco se presentan los puntos más relevantes de los procedimientos enunciados por este estándar. Sin embargo, más adelante habrá que modificarlos un poco para crean un método de pruebas práctico y realizable para el laboratorio de energía solar del Tec de Monterrey (Casa Solar). En la tercera parte de la tesis se lleva a cabo el diseño y la construcción de un sistema de pruebas para la evaluación de colectores solares de placa plana. La infraestructura se creó para la Casa Solar, y es resultado de un análisis de distintas configuraciones de circuitos de prueba. Por último, las pruebas de la determinación de la constante de tiempo y la eficiencia térmica del colector son llevadas a cabo. Los resultados que se obtuvieron fueron para dos distintos colectores, ambos de la tecnología de placa plana.

Evaluación de modelos estático y dinámico, para colectores solares de aire de placas planas, en sistemas de convección natural

Author : Fernando Valentín Bolaño Pacheco
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (953 download)

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Book Synopsis Evaluación de modelos estático y dinámico, para colectores solares de aire de placas planas, en sistemas de convección natural by : Fernando Valentín Bolaño Pacheco

Download or read book Evaluación de modelos estático y dinámico, para colectores solares de aire de placas planas, en sistemas de convección natural written by Fernando Valentín Bolaño Pacheco and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: En este trabajo se evaluaron dos modelos matemáticos para simular el funcionamiento de un colector solar de aire de placas planas. El primer modelo se denominó estático y se caracteriza por no considerar los efectos del almacenamiento de calor, ni el flujo de calor por conducción en los elementos del sistema, para implementar este modelo, se planteó una sistemas de ecuaciones no lineales, resuelto de forma numérica a través del método de Newton, mientras que el segundo modelo denominado dinámico, que si considera dichos efectos, fue planteado y resuelto de forma explícita. Para la validación de los modelos, se construyó un colector solar de aire de placas planas, al que posteriormente le fue implementado un sistema de adquisición de datos, con el propósito de registrar parámetros de funcionamiento del colector, tales como: flujo de aire en el interior del colector, temperatura de la cubierta posterior del colector, datos ambientales locales, como: temperatura ambiental, radiación solar y velocidad de viento, medidos un día de verano entre las 8:00 y las 22:00 h, además de datos constructivos y propiedades de los materiales del colector. Para la evaluación de los modelos, se empleó como parámetro de comparación la temperatura de salida del aire y la eficiencia del colector, en específico, se comparó la información proporcionada por los modelos, con los datos experimentales de temperatura del fluido, registrados a la salida del colector y eficiencia experimental del sistema. La evaluación de los modelos, arrojó como resultado que el modelo de mejor desempeño es el dinámico con un valor de raíz del error cuadrado medio (RMSE) de 3,5 \U+00ba\C, para la temperatura de salida del fluido y de 3,8 %, para la eficiencia del colector, mientras que el modelo estático presentó un RMSE de 5,3 °C para la temperatura de salida del fluido y 4,5 % para la eficiencia.

The North American Mosaic

Author : Commission for Environmental Cooperation (Montréal, Québec). Secretariat
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis The North American Mosaic by : Commission for Environmental Cooperation (Montréal, Québec). Secretariat

Download or read book The North American Mosaic written by Commission for Environmental Cooperation (Montréal, Québec). Secretariat and published by . This book was released on 2001 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The North American Mosaic has four overarching features. First, it is, to the extent feasible, based on comparable information on the status and trends of major indicators of the state of the environment in Canada,Mexico, and the United States. Second, the report confirms that these three countries together make up an incredibly complex, dynamic, and interconnected ecosystem in which humans play a dominant and decisive role. Third, the report raises important and sometimes disquieting questions concerning the sustainability of some current trends. Finally, the report is a reminder that our economic, social, and physical well-being are utterly dependent on the life-sustaining services provided by nature. This report emphasizes the importance of developing mutually compatible economic, social, and environmental goals and policies across the three-country region.

Sensitivity Analysis in Practice

Author : Andrea Saltelli
Publisher : John Wiley & Sons
ISBN 13 : 047087094X
Total Pages : 232 pages
Book Rating : 4.4/5 (78 download)

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Book Synopsis Sensitivity Analysis in Practice by : Andrea Saltelli

Download or read book Sensitivity Analysis in Practice written by Andrea Saltelli and published by John Wiley & Sons. This book was released on 2004-07-16 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sensitivity analysis should be considered a pre-requisite for statistical model building in any scientific discipline where modelling takes place. For a non-expert, choosing the method of analysis for their model is complex, and depends on a number of factors. This book guides the non-expert through their problem in order to enable them to choose and apply the most appropriate method. It offers a review of the state-of-the-art in sensitivity analysis, and is suitable for a wide range of practitioners. It is focussed on the use of SIMLAB – a widely distributed freely-available sensitivity analysis software package developed by the authors – for solving problems in sensitivity analysis of statistical models. Other key features: Provides an accessible overview of the current most widely used methods for sensitivity analysis. Opens with a detailed worked example to explain the motivation behind the book. Includes a range of examples to help illustrate the concepts discussed. Focuses on implementation of the methods in the software SIMLAB - a freely-available sensitivity analysis software package developed by the authors. Contains a large number of references to sources for further reading. Authored by the leading authorities on sensitivity analysis.

HVAC Systems Duct Design

Author : Smacna
Publisher :
ISBN 13 : 9781617210471
Total Pages : 0 pages
Book Rating : 4.2/5 (14 download)

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Book Synopsis HVAC Systems Duct Design by : Smacna

Download or read book HVAC Systems Duct Design written by Smacna and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Greenhouse Technology and Management

Author : Nicolás Castilla
Publisher : CABI
ISBN 13 : 1780641036
Total Pages : 373 pages
Book Rating : 4.7/5 (86 download)

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Book Synopsis Greenhouse Technology and Management by : Nicolás Castilla

Download or read book Greenhouse Technology and Management written by Nicolás Castilla and published by CABI. This book was released on 2013 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Translation of the second ed.: Invernaderos de plaastico: tecnologaia y manejo.

Global Investment Competitiveness Report 2017/2018

Author : World Bank Group
Publisher : World Bank Publications
ISBN 13 : 1464811857
Total Pages : 281 pages
Book Rating : 4.4/5 (648 download)

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Book Synopsis Global Investment Competitiveness Report 2017/2018 by : World Bank Group

Download or read book Global Investment Competitiveness Report 2017/2018 written by World Bank Group and published by World Bank Publications. This book was released on 2017-10-25 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Investment Competitiveness report presents new insights and evidence on drivers of foreign direct investment (FDI) in developing countries, and FDI’s role in development. The report’s survey of 750 executives of multinational corporations finds that a business-friendly legal and regulatory environment is a key driver of investment decisions in developing countries, along with political stability, security, and macroeconomic conditions. The report’s topic-specific chapters explore the potential of FDI to create new growth opportunities for local firms, assess the power of tax holidays and other fiscal incentives to attract FDI, analyze characteristics of FDI originating in developing countries, and examine the experience of foreign investors in countries affected by conflict and fragility. Three key features of this Global Investment Competitiveness report distinguish it from other publications on FDI. First, its insights are based on a combination of first-hand perspectives of investors, extensive analysis of available data and evidence, and international good practices in investment policy design and implementation. Secondly, rather than exploring broad FDI trends, the report provides detailed and unique analysis of FDI depending on its motivation, sector, geographic origin and destination, and phase of investment. Thirdly, the report offers practical and actionable recommendations to policymakers in developing countries wishing to reform their business climates for increased investment competitiveness. As such, the report is meant to complement other knowledge products of the World Bank Group focused even more explicitly on country-level data, detailed reform diagnostics, and presentation of best practices. We are confident this report will bring value and fresh perspectives to a variety of audiences. To governments and policymakers, including investment promotion professionals, the report offers direct insights into the role of government policies and actions in investors’ decision-making. To foreign investors and site location consultants, the report provides information on FDI trends and drivers across sectors and geographies. For academic audiences, the new datasets on investment incentives and FDI motivations enables opportunities for additional research and analysis. Lastly, for development assistance providers and other stakeholders, the report highlights key approaches for maximizing FDI’s benefits for development.

Passive Cooling of Buildings

Author : D. Asimakopoulos
Publisher : Routledge
ISBN 13 : 113425489X
Total Pages : 494 pages
Book Rating : 4.1/5 (342 download)

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Book Synopsis Passive Cooling of Buildings by : D. Asimakopoulos

Download or read book Passive Cooling of Buildings written by D. Asimakopoulos and published by Routledge. This book was released on 2013-10-31 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy use in buildings in the EU represents about 40% of the total annual energy consumption. With greater awareness of the need to reduce energy consumption comes a growth of interest in passive cooling, particularly as an alternative to air-conditioning. This book describes the fundamentals of passive cooling together with the principles and formulae necessary for its successful implementation. The material is comprised largely of information and results compiled under the SAVE European Research Programme.

Water Reuse

Author : Metcalf & Eddy, Inc., an AECOM Company
Publisher : McGraw Hill Professional
ISBN 13 : 0071508775
Total Pages : 1610 pages
Book Rating : 4.0/5 (715 download)

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Book Synopsis Water Reuse by : Metcalf & Eddy, Inc., an AECOM Company

Download or read book Water Reuse written by Metcalf & Eddy, Inc., an AECOM Company and published by McGraw Hill Professional. This book was released on 2007-02-05 with total page 1610 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Integrated Approach to Managing the World's Water Resources Water Reuse: Issues, Technologies, and Applications equips water/wastewater students, engineers, scientists, and professionals with a definitive account of the latest water reclamation, recycling, and reuse theory and practice. This landmark textbook presents an integrated approach to all aspects of water reuse _ from public health protection to water quality criteria and regulations to advanced technology to implementation issues. Filled with over 500 detailed illustrations and photographs, Water Reuse: Issues, Technology, and Applications features: In-depth coverage of cutting-edge water reclamation and reuse applications Current issues and developments in public health and environmental protection criteria, regulations, and risk management Review of current advanced treatment technologies, new developments, and practices Special emphasis on process reliability and multiple barrier concepts approach Consideration of satellite and decentralized water reuse facilities Consideration of planning and public participation of water reuse Inside This Landmark Water/Wastewater Management Tool • Water Reuse: An Introduction • Health and Environmental Concerns in Water Reuse • Technologies and Systems for Water Reclamation and Reuse • Water Reuse Applications • Implementing Water Reuse

International Governance

Author : Oran R. Young
Publisher : Cornell University Press
ISBN 13 : 1501711393
Total Pages : 239 pages
Book Rating : 4.5/5 (17 download)

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Book Synopsis International Governance by : Oran R. Young

Download or read book International Governance written by Oran R. Young and published by Cornell University Press. This book was released on 2018-05-31 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: How can the global environment be safeguarded in the absence of a world government? In the vanguard of efforts to address this critical question, Oran R. Young draws on environmental issues to explore the nature of international governance. Young's analysis invokes the distinction between "governance," a social function involving the management of interdependent individuals or groups, and "government," a set of formal organizations that makes and enforces rules.

Food Science

Author : Norman N Potter
Publisher : Springer
ISBN 13 : 9789401572637
Total Pages : 752 pages
Book Rating : 4.5/5 (726 download)

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Book Synopsis Food Science by : Norman N Potter

Download or read book Food Science written by Norman N Potter and published by Springer. This book was released on 2014-01-15 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Solar Drying Technology

Author : Om Prakash
Publisher : Springer
ISBN 13 : 9811038333
Total Pages : 640 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Solar Drying Technology by : Om Prakash

Download or read book Solar Drying Technology written by Om Prakash and published by Springer. This book was released on 2017-08-29 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive reference guide to the latest developments and advances in solar drying technology, covering the concept, design, testing, modeling, and economics of solar drying technologies, as well as their impact on the environment. The respective chapters are based on the latest studies conducted by reputed international researchers in the fields of solar energy and solar drying. Offering a perfect blend of research and practice explained in a simple manner, the book represents a valuable resource for researchers, students, professionals, and policymakers working in the field of solar drying and related agricultural applications.

WORLD ENERGY OUTLOOK 2018

Author :
Publisher :
ISBN 13 : 9789264064522
Total Pages : pages
Book Rating : 4.0/5 (645 download)

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Book Synopsis WORLD ENERGY OUTLOOK 2018 by :

Download or read book WORLD ENERGY OUTLOOK 2018 written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Biological Wastewater Treatment

Author : Mogens Henze
Publisher : IWA Publishing (International Water Assoc)
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (4 download)

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Book Synopsis Biological Wastewater Treatment by : Mogens Henze

Download or read book Biological Wastewater Treatment written by Mogens Henze and published by IWA Publishing (International Water Assoc). This book was released on 1881 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: For information on the online course in Biological Wastewater Treatment from UNESCO-IHE, visit: http://www.iwapublishing.co.uk/books/biological-wastewater-treatment-online-course-principles-modeling-and-design Over the past twenty years, the knowledge and understanding of wastewater treatment have advanced extensively and moved away from empirically-based approaches to a first principles approach embracing chemistry, microbiology, physical and bioprocess engineering, and mathematics. Many of these advances have matured to the degree that they have been codified into mathematical models for simulation with computers. For a new generation of young scientists and engineers entering the wastewater treatment profession, the quantity, complexity and diversity of these new developments can be overwhelming, particularly in developing countries where access is not readily available to advanced level tertiary education courses in wastewater treatment. Biological Wastewater Treatment addresses this deficiency. It assembles and integrates the postgraduate course material of a dozen or so professors from research groups around the world that have made significant contributions to the advances in wastewater treatment. The book forms part of an internet-based curriculum in biological wastewater treatment which also includes: Summarized lecture handouts of the topics covered in book Filmed lectures by the author professors Tutorial exercises for students self-learning Upon completion of this curriculum the modern approach of modelling and simulation to wastewater treatment plant design and operation, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks or biofilm systems, can be embraced with deeper insight, advanced knowledge and greater confidence.

Engaging People in Sustainability

Author : Daniella Tilbury
Publisher : IUCN
ISBN 13 : 9782831708232
Total Pages : 152 pages
Book Rating : 4.7/5 (82 download)

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Book Synopsis Engaging People in Sustainability by : Daniella Tilbury

Download or read book Engaging People in Sustainability written by Daniella Tilbury and published by IUCN. This book was released on 2004 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is based on the exchange of professional experiences which featured in an IUCN CEC workshop in August 2002. Practitioners from around the world shared their models of good practice and explored the challenges involved in engaging people in sustainability. The difficulties facing practitioners vary between country and context but some challenges are universal: A lack of clarity in communicating what is meant by sustainable development; An ambition to educate everyone to bring about a global citizenship; Social, organisational or institutional factors constrain change to sustainable development, yet there is an emphasis on formal education, and community educators do not receive the same support; A lack of balance in addressing the integration of environmental, social and economic dimensions leading to an interpretation that ESD is mainly about environment and conservation issues; New learning (rather than teaching) approaches are called for to promote more debate in society. Yet, few are trained or experienced in these new approaches. Practitioners need support to explore new ways of promoting learning. [Foreword, ed].

Manga High

Author : Michael Bitz
Publisher : Harvard Education Press
ISBN 13 : 1612500137
Total Pages : 208 pages
Book Rating : 4.6/5 (125 download)

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Book Synopsis Manga High by : Michael Bitz

Download or read book Manga High written by Michael Bitz and published by Harvard Education Press. This book was released on 2009-05-01 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a four-year study, Manga High explores the convergence of literacy, creativity, social development, and personal identity in one of New York City’s largest high schools. Since 2004, students at Martin Luther King, Jr., High School in Manhattan have been creating manga—Japanese comic books. They write the stories, design the characters, and publish their works in print and on the Internet. These students—African-American and Latino teenagers—are more than interested in the art and medium of manga. They have become completely engrossed in Japanese language, culture, and society. Manga High is highlighted by reproductions and content analysis of students’ original art and writing. An appendix includes guidelines for educators on starting a comic book club.