Automatic anti-surge control for dual centrifugal compressor...

Details Automatic anti-surge control for dual centrifugal compressor... Automatic anti-surge control for dual centrifugal compressor...

F - Mech Eng,Light,Heat,Weapons

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F25B 7/00 (2006.01) F04D 27/02 (2006.01) F25B 1/053 (2006.01) F25B 49/02 (2006.01)

Patent

CA 1264364

AUTOMATIC ANTI-SURGE CONTROL FOR DUAL CENTRIFUGAL COMPRESSOR SYSTEM ABSTRACT OF THE DISCLOSURE A control system for controlling the capacity of a lead compressor of a refrigeration system having a lead and lag compressor when the lag compressor is in surge. A microcom- puter system receives electrical input signals indicative of the lead and lag motor currents and closes the inlet guide vanes of the lead compressor when the lag compressor percent motor amps are below the lead compressor motor amps by more than a selected percentage for a specified period of time.

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