This paper describes the use of a nonchemical (chemical-free) water treatment method, pulsed-power, to control scale formation under a variety of conditions. Nonchemical water treatment is the ultimate choice for environmentally responsible scaling inhibition, but most nonchemical methods have had a continuing problem with credibility regarding their efficacy. This paper describes cooling tower laboratory tests on a pulsed-power unit using the procedure from ASHRAE research project RP-1155. Case studies on a comfort-cooling cooling tower/chiller system and industrial once-through applications are also described. NACE publication 7K189, “Control Factors in Performance Testing of Nonchemical Water Treatment Devices” is used as a guideline.

Subject
Coils, Water, Precipitates, Calcium carbonate, Saturation, Carbonate scales, Silica, Scale formation, Heat, Equipment, Deposit corrosion, Scaling, Water treatment facilities
Keywords:
pulsed-power, nonchemical, chemical-free, scale prevention, water treatment, cooling tower, calcium carbonate, once through, condenser water
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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