HVAC (heating, ventilating, and air conditioning) failures occur mainly in chillers, service water systems, cooling towers, evaporative condensers, chilled-water systems, hot-water heating systems and steam boilers. Failures are caused by a variety of mechanisms including oxygen corrosion, tuberculation, dealloying, erosion, underdeposit attack, stress corrosion, corrosion fatigue, acid wastage, manufacturing defects, improper chemical treatment, and galvanic cells. Attack mechanisms are described and appropriate case histories given with specific emphasis on heating, ventilating and air conditioning systems.

Subject
External surfaces, Chillers, Corrosion failures, Water, Materials, Piping, Insulation, Tubes, Metal loss, Tubercles, Metals, Copper, Deposit corrosion
Keywords:
heating, ventilation, air conditioning, corrosion, failure, cracking
© 1997 Association for Materials Protection and Performance (AMPP). All rights reserved. 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 AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1997
Association for Materials Protection and Performance (AMPP)
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