7347391-Fundamentals-Of-Hvac-Systems

Fundamentals of HVAC Systems

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Fundamentals of HVAC Systems
Prepared by

Robert McDowall, P. Eng.
Engineering Change Inc.

American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc. 1791 Tullie Circle NE, Atlanta, GA 30329, USA

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Butterworth-Heinemann is an imprint of Elsevier Linacre House, Jordan Hill, Oxford OX2 8DP, UK The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, UK 84 Theobald’s Road, London WC1X 8RR, UK Radarweg 29, PO Box 211, 1000 AE Amsterdam, The Netherlands 30 Corporate Drive, Suite 400, Burlington, MA 01803, USA 525 BStreet, Suite 1900, San Diego, CA 92101-4495, USA First edition 2006 Copyright © 2006, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. and Elsevier Inc Published by Elsevier 2006. All rights reserved The right of American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. and Elsevier Inc to be identified as the author of this work has been asserted inaccordance with the Copyright, Designs and Patents Act 1988 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 the prior written permission of the publisher Permissions may be sought directly from Elsevier’s Science & Technology Rights Department in Oxford, UK:phone ( 44) (0) 1865 843830; fax ( 44) (0) 1865 853333; email: permissions@elsevier.com. Alternatively you can submit your request online by visiting the Elsevier web site at http:/ /elsevier.com/locate/permissions, and selecting Obtaining Permission to use Elsevier material Notice No responsibility is assumed by the publisher for any injury and/or damage to persons or property as a matter ofproducts 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 British Library Cataloguing in Publication Data A catalogue record for this book is available from the BritishLibrary Library of Congress Cataloging-in-Publication Data A catalog record for this book is available from the Library of Congress ISBN–13: 978-0-12-372497-7 ISBN–10: 0-12-372497-X For information on all Butterworth-Heinemann publications visit our web site at books.elsevier.com Printed and bound in Great Briatin 06 07 08 09 10 10 9 8 7 6 5 4 3 2 1

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Contents

Foreword 1 Introduction to HVAC Study Objectives of Chapter 1 1.1 Introduction 1.2 Brief History of HVAC 1.3 Scope of Modern HVAC 1.4 Introduction to Air-conditioning Processes 1.5 Objective: What is your system to achieve? 1.6 Environment For Human Comfort The Next Step Summary Bibliography 2 Introduction to HVACSystems Study Objectives of Chapter 2 2.1 Introduction 2.2 Introducing the Psychrometric Chart 2.3 Basic Air-Conditioning System 2.4 Zoned Air-Conditioning Systems 2.5 Choosing an Air-Conditioning System 2.6 System Choice Matrix The Next Step Summary Bibliography 3 Thermal Comfort Study Objectives of Chapter 3 3.1 Introduction: What is Thermal Comfort? 3.2 Seven Factors Influencing Thermal Comfort3.3 Conditions for Comfort 3.4 Managing Under Less Than Ideal Conditions 3.5 Requirements of Non-Standard Groups The Next Step Summary Bibliography

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Contents

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Ventilation and Indoor Air Quality Study Objectives of Chapter 4 4.1 Introduction 4.2 Air Pollutants and Contaminants 4.3 Indoor Air...