Method and device for monitoring performance of internal pump
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United States of America Patent
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-
Sep 16, 2003
Grant Date -
Nov 21, 2002
app pub date -
Aug 31, 2001
filing date -
Feb 7, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for monitoring the performance of internal pumps in a plant in which a coolant is driven through plural internal pumps, said method comprising measuring the pump motor power input to the motor driving said pump; estimating the power input to said pump motor during a test performed outside said plant corresponding to the pump speed and the pump flow measured within said plant; computing a pump motor input power ratio based on said measured value and said estimated value; and detecting the variation in the performance of said internal pumps.
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