HVAC Fundamentals i This page intentionally left blank HVAC Fundamentals Samuel C. Sugarman THE FAIRMONT PRESS, INC. iii Library of Congress Cataloging-in-Publication Data Sugarman, Samuel C., 1946- HVAC fundamentals/Samuel C. Sugarman. p. cm. Includes index. ISBN: 0-88173-489-6 (print) — 0-88173-490-X (electronic) 1. Heating—Equipment and supplies. 2. Ventilation—Equipment and supplies. 3. Air conditioning—Equipment and supplies. I. Title TH7345.S795 2004 697-dc22 2004056387 HVAC fundamentals/Samuel C. Sugarman ©2005 by The Fairmont Press, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Published by The Fairmont Press, Inc. 700 Indian Trail Lilburn, GA 30047 tel: 770-925-9388; fax: 770-381-9865 http://www.fairmontpress.com Distributed by Marcel Dekker/CRC Press 2000 N.W. Corporate Blvd. Boca Raton, FL 33431 tel: 800-272-7737 http://www.crcpress.com Printed in the United States of America 10 9 8 7 6 5 4 3 2 1 0-88173-489-6 (The Fairmont Press, Inc.) 0-8493-3665-1 (Dekker/CRC Press) While every effort is made to provide dependable information, the publisher, authors, and editors cannot be held responsible for any errors or omissions. iv Table of Contents Chapter 1 HVAC Systems ...................................................................1 Chapter 2 Heat Flow..........................................................................15 Chapter 3 Heating and Ventilating Systems..................................25 Chapter 4 Air Conditioning Systems..............................................47 Chapter 5 Compressors......................................................................73 Chapter 6 Water Chillers ...................................................................83 Chapter 7 Fans.....................................................................................97 Chapter 8 Air Distribution..............................................................115 Chapter 9 Variable Air Volume......................................................141 Chapter 10 Pumps and Water Distribution ...................................169 Chapter 11 Control Systems..............................................................195 Chapter 12 Control System Components.......................................205 Chapter 13 Choosing an HVAC System.........................................219 Chapter 14 Heat Recovery.................................................................229 Chapter 15 Energy Conservation Opportunities...........................241 Chapter 16 Central Plant Water Chiller Optimization ................259 Chapter 17 Fan Drives .......................................................................271 Chapter 18 Terminology.....................................................................281 Chapter 19 HVAC Timeline ..............................................................291 Index...............................................................................................................297 v This page intentionally left blank Foreword HVAC Fundamentals covers the full range of HVAC systems used in today’s facilities. This is a comprehensive book providing the reader a detailed description of how HVAC systems operate. The HVAC systems are divided into components and controls for air, water, heating, venti- lating and air conditioning to clearly illustrate the way in which each system, subsystem, control or component contributes to providing the desired indoor environment. The reader will learn why one component or system may be chosen over another with respect to design, applica- tion, energy conservation, indoor air quality and cost. The book also covers heat flow fundamentals and the heat flow calculations used in selecting equipment and determining system operating performance and costs. Fluid flow fundamentals and equations, and fundamentals of system testing and verification of system performance are also covered in this book. This gives the reader a complete picture of systems from conception to operation. The chapters are organized in a way that one builds upon another and systems, components, design and application are revisited as the reader gains knowledge and insight about the work- ings of HVAC systems. Sam Sugarman vii This page intentionally left blank Acknowledgments Writers do not write alone. I would like to acknowledge just a few of those colleagues, friends and family who shared their support, ideas and guidance for this project. Bill Payne, my acquisitions editor, for his intellectual support and stimulating ideas. My friend and HVAC con- tractor Mark Makie, who has discussed HVAC issues with me for 25 years. Technical Safety Services, Inc., headquartered in Berkeley, Califor- nia, gave me an arena for developing concepts and materials and then the space for testing and teaching them. My family and loved ones who watched me stare at my laptop computer for hours on end, for bringing me sustenance, their critiques and then leaving me in relative solitude— almost alone. And the most special thanks to WJ down by the sea, to whom this book is dedicated. ix