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Proceedings of an International Conference on Mitigation of Heat Exchanger Fouling and Its Economic and Environmental Implications

ISSN:
1-56700-172-6 (Print)

PERFORMANCE BASED MONITORING AND ADDITIVE CONTROL

E. S. Beardwood
Ashland Canada Inc. Ajax, Ontario LIS 2E5 CANADA

G. F. Hays
Ashland Inc. Boonton, NJ 07005 USA

Abstract

Performance based monitoring and additive control is a novel approach to the cost-effective protection of cooling system efficiency and economic life. Traditional open recirculating cooling water control utilizes feedback control of pH and conductivity together with a feed forward signal from a makeup water meter to control system chemistry. This paper covers the superimposition of cascade control based on performance parameters, corrosion and fouling, as a means to refine control and optimize results. The results are further enhanced via the inclusion of Artificial Intelligence logic to make direct real-time control and to integrate all of the logic into a single control system. Performance based control is thus a significant improvement over existing industry norms.