Rotary kinetic fluid motors or pumps – Method of operation
Patent
1981-02-17
1982-10-26
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
Method of operation
415 17, F01D 1702
Patent
active
043559484
ABSTRACT:
An adjustable surge and capacity control system for matching a capacity control system to an inverter-driven centrifugal compressor based liquid chiller having unknown surge characteristics. The necessary adaptation of the capacity control circuit to a particular chiller is attained by the provision of two potentiometers which are adjustable to develop a functional which avoids surge and operates the system in an efficient manner at all feasible operating point loads and heads. The use of a circuit employing a pair of potentiometers permits the formation of the appropriate functional with two degrees of shaping flexibility.
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Kountz Kenneth J.
Norbeck Dean K.
Borg-Warner Corporation
Hunter Thomas B.
Powell Jr. Everette A.
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