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Download 1 File ARCHITECTURE: COMFORT AND ENERGY This Page Intentionally Left Blank ARCHITECTURE: COMFORT AND ENERGY Editors C. Gallo, M. Sala, A.A.M. Sayigh 1988 ELSEVIER Amsterdam - Lausanne - New York - Oxford - Shannon - Singapore - Tokyo Published originally as a special issue (Volume 2:1/2) of the journal Renewable and Sustainable Energy Reviews and also available in hard-bound edition (ISBN 0-080-43004-X) ELSEVIER SCIENCE Ltd The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK © 1998 Elsevier Science Ltd. All rights reserved. This work and the individual contributions contained in it are protected under copyright by Elsevier Science Ltd, and the follow- ing terms and conditions apply to their use: Photocopying Single photocopies of single chapters may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying, including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Special rates are available for educational institutions that wish to make photocopies for non-profit educational classroom use. Permissions may be sought directly from Elsevier Science Rights & Permissions Department, PO Box 800, Oxford OX5 1DX, UK; phone: (+44) 1865 843830, fax: (+44) 1865 853333, e-mail: [email protected]. You may also contact Rights & Permissions directly through Elsevier's home page (http://www.elsevier.nl), selecting first 'Customer Support', then 'General Information', then 'Permissions Query Form'. In the USA, users may clear permissions and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: (978) 7508400, fax: (978) 7504744, and in the UK through the Copyright Licensing Agency Rapid Clearance Service (CLARCS), 90 Tottenham Court Road, London WIP OLP, UK; phone: (+44) 171 436 5931; fax: (+44) 171 436 3986. Other countries may have a local reprographic rights agency for payments. Derivative Works Subscribers may reproduce tables of contents or prepare lists of articles including abstracts for internal circulation within their institutions. Permission of the publisher is required for resale or distribution outside the institution. Permission of the publisher is required for all other derivative works, including compilations and translations. Electronic Storage or Usage Permission of the publisher is required to store or use electronically any material contained in this journal, including any article or part of an article. Contact the publisher at the address indicated. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher. Address permissions requests to: Elsevier Science Rights & Permissions Department, at the mail, fax and e-mail addresses noted above. Notice No responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein. Because of rapid advances in the medical sciences, in particular, independent verification of diagnoses and drug dosages should be made. First edition 1998 Library of Congress Cataloging in Publication Data A catalog record from the Library of Congress has been applied for. British Library of Cataloguing in Publication Data A catalogue record from the British Library has been applied for. ISBN: 0-08-043004-X @ The paper used in this publication meets the requirements of ANSI/NISO Z39.48-1992 (Permanence of Paper). Printed in the United Kingdom CONTENTS ARCHITECTURE: COMFORT AND ENERGY A. Sayigh 1 Introduction A. Sayigh and A. Hamid Marafia 3 Chapter 1—Thermal comfort and the development of bio- climatic concept in building design A. Sayigh and A. Hamid Marafia 25 Chapter 2—Vernacular and contemporary buildings in Qatar F. M. Butera 39 Chapter 3—Principles of thermal comfort H. Coch 67 Chapter 4—Bioclimatism in vernacular architecture C. Gallo 89 Chapter 5—The utilization of microclimate elements R. Serra 115 Chapter 6—Daylighting H. B. Awbi 15 7 Chapter 7—Ventilation M. Sala 189 Chapter 8—Technology for modem architecture Indexed/Abstracted in: INSPEC Data ISSN 1364-0321 (ISBN 0-08(qf.)l3004-X) PERGAMON This Page Intentionally Left Blank RENEWABLE & SUSTAINABLE , , ^ T. ENERGY REVIEWS Renewable and Sustainable Energy Reviews PERGAMON 2 (1998) 12 Introduction Ali Sayigh 147 Hilmanton, Lower Barley, Reading RG6 4HN, UK Energy and architecture form a natural marriage if indoor comfort and respect for environment are secured. The role of energy within buildings varies from country to country, climate to climate; from 30% in OECD countries, 50% in non-OECD Europe to 70% in developing countries. Population growth and demand for housing have forced poUticians to embark on massive housing schemes without consideration of comfort, energy demand and environmental issues. In this book we are seeking to understand how previous generations lived in harsh climates and without abundant sources of energy, yet managed to design and build appropriate dwelUngs providing both comfort and harmony with the environment. We have only to look at the Vernacular architecture which existed in the areas of extreme climate such as India, Africa and Scandinavia where indigenous materials were utilised to construct attract- ive and comfortable homes. Modern technology has provided us with excellent new materials such as "switchable'' material', light but strong structural materials and a variety of insulations. It is now commonly accepted by architects and builders that due consideration must be given to energy conservation; the use of natural Hghting and use of solar energy for both heating and cooling; as well as enhanced natural ventilation and minimal impact on the environment. In this book we seek to approach the architecture-energy combination and its relationship to the environment. There are chapters on thermal comfort, low energy architecture deaUng with various criterion for comfort in different parts of the World. For example in the State of Qatar 50% of the energy used in that country can be saved by using low energy buildings with several measures such as shading, evap- orative cooHng, the use of appropriate thermal mass and natural ventilation coupled with radiative cooUng. Contemporary architecture, in some cases, ignores most of these elements and concentrates on using excessive energy to cool or heat buildings. In the Gulf Region, 70% of the electricity generated is used for cooling the buildings. Other chapters state the principles of thermal comfort, how the thermal exchange takes place between man and the various parts of the building elements. Some authors developed their own models to evaluate such exchange. The bioclimatic concept in Vernacular Architecture was addressed thoroughly in one chapter starting a good comparison between Vernacular and contemporary architecture, then addressing the impact of climate on the building forms. The climate which plays a major role at 1364-0321/98/$ - see front matter © 1998 Published by Elsevier Science Ltd. All rights reserved PII: SI 364-03 2 1(9 8)00008-2 2 A. Sayigh/Renewable and Sustainable Energy Reviews 2 (1998) 1-2 different locations and how this dictates the shape and form of the buildings and save some energy. The igloo of the Inuit and the open courtyard houses of the Med- iterranean are good examples of typologies depending on the climate. Another chapter is devoted to the importance of micro-climate and its various elements and usage to obtain comfort such as the air movement, the Sun effect, the thermal mass, the vegetation, shading devices and the use of water and moisture in improving Hving conditions in a dry climate. One of the most important energy saving elements in buildings is the use of daylighting to conserve and reduce heat gain into buildings. It explains the various conditions of the sky, the basic physical principle of lighting, the physiology of vision, and goes to the use of daylighting in architecture to improve the building design and accesses this use effectively. Ventilation and its importance in buildings was presented in another chapter where the indoor pollutants, ventilation strategies, the air flow principles, air leakage in buildings, natural and solar induced ventilation and mechanical ventilation were explained and their usage was demonstrated. The last chapter outHnes in depth the technology for modern architecture. The elements and concepts such as ventilated roofs, active curtain walls, the use of green- houses, movable shading devices, hght ducts, integrated ventilation, cooHng elements and the use of outdoor spaces are all researched and their uses have been illustrated in this chapter. We hope the book will be of use to architectural students; building technologists; energy experts and urban and town planners. It will be equally interesting to all those who are concerned about the environment and advocate the use of appropriate technologies to reduce energy consumption. RENEWABLE & SUSTAINABLE , , ^ ENERGY REVIEWS Renewable and Sustainable Energy Reviews PERGAMON 2 (1998) 3-24 Chapter 1—Thermal comfort and the development of bioclimatic concept in building design Ali Sayigh""'*, A. Hamid Marafia^ '"University
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