Journal of Failure Analysis and Prevention

, Volume 12, Issue 3, pp 281–285 | Cite as

Failure of Centrifugal Chillers: Coating and Anode Location Problems

Technical Article---Peer-Reviewed
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Abstract

This article reports on the failure of two centrifugal chillers that were installed in a large building complex by the seaside. The carbon-steel divider plates of the failed chillers were perforated and severely corroded, although protective coating and cathodic protection had been applied. It was found that the “protective” coating was faulty as they contained the metallic pigment titanium, which is nobler than the underlying carbon steel. The location of the zinc anode on the chiller doors was also problematic. Suggestions for design improvement in protection against corrosion for such centrifugal chillers are proposed.

Keywords

Centrifugal chiller Cathodic protection Metallic pigment Zinc anode 

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Copyright information

© ASM International 2012

Authors and Affiliations

  1. 1.Department of Physics and Materials ScienceCity University of Hong KongHong KongChina
  2. 2.Department of Electromechanical EngineeringThe University of MacauMacauChina

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