PERFORMANCE-BASED CONTROL SYSTEM

摘要

A method and apparatus for detecting and controlling cooling system characteristics is disclosed. A flow rate of make-up cooling medium is measured. A conductivity of the make-up cooling medium is measured . A conductivity of a recirculating cooling medium is measured. A treatment material feed rate is determined based upon the formul a: X-(make-up cooling medium flow rate)(make-up cooling medium conductivity)(.OMEGA.)/(K)(recirculating cooling medium conductivity) , where X is a treatment feed rate of a treatment compound, .OMEGA. is a desired concentration of the treatment compound, and K is a constant. A corrosion rate of the recirculating cooling medium is measured. A desired corrosion rate of the recirculating cooling medium is determined. A feed rate of a corrosion inhibitor is calculated according to the following formula: Y = (X)[1+.alpha.(CORR MEASURED/CORR~SET POINT?)], where .alpha. is a value between about 0.1 and about 8.0.