Method and apparatus for refrigeration system control having electronic evaporator pressure regulators

A method and apparatus for refrigeration system control includes a control system operable to meet cooling demand and control suction pressure for a plurality of refrigeration circuits each including a variable valve and an expansion valve. The controller controls the variable valve independently of...

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Bibliographic Details
Main Authors Singh, Abtar, Chabucos, Jim, Wickberg, Paul, Wallace, John G
Format Patent
LanguageEnglish
Published 14.11.2006
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Summary:A method and apparatus for refrigeration system control includes a control system operable to meet cooling demand and control suction pressure for a plurality of refrigeration circuits each including a variable valve and an expansion valve. The controller controls the variable valve independently of the expansion valves to meet cooling demand by determining a change in a measured parameter and controlling at least one of the variable valves based upon the change to an approximately fully open position.