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

An apparatus comprising:

• an electronic evaporator pressure regulator in communication with a refrigeration circuit and operable to control a temperature of said refrigeration circuit;
• a sensor in communication with said refrigeration circuit and operable to measure a parameter from said circuit;
• and
• a controller operable to control said evaporator pressure regulator based upon said measured parameter from said refrigeration circuit, wherein said controller adaptively controls a suction pressure for said refrigeration circuit.

In a refrigeration system including a plurality of circuits, an apparatus comprising:

• an evaporator pressure regulator in communication with one of the plurality of circuits;
• a sensor in communication with the one of a plurality of circuits and operable to measure a parameter thereof;
• and
• a controller operable to control said electronic evaporator pressure regulator to control the temperature in said one of a plurality of circuits by determining a change in said parameter and updating a set point based upon the change in said parameter.

An apparatus comprising:

• an electronic evaporator pressure regulator in communication with a refrigeration circuit and operable to control a temperature of said refrigeration circuit;
• a sensor in communication with said refrigeration circuit and operable to measure a parameter from said circuit;
• and
• a controller operable to control said electronic evaporator pressure regulator to control the temperature in said refrigeration circuit by determining a change in said parameter and updating a set point based upon the change in said parameter.

A method for refrigeration system control, comprising:

• operating an electronic evaporator pressure regulator to control a temperature of a refrigeration circuit;
• measuring a parameter from said circuit by a sensor in communication with said circuit;
• and
• controlling said electronic evaporator pressure regulator to control the temperature in said circuit by determining a change in said parameter and updating a set point based upon said change in said parameter.

A method for refrigeration system control, comprising:

• operating an electronic evaporator pressure regulator to control a temperature of a refrigeration circuit;
• measuring a parameter from said circuit by a sensor in communication with said circuit;
• and
• adaptively controlling said electronic evaporator pressure regulator and a suction pressure based upon said measured parameter from said refrigeration circuit.

A method for refrigeration system control, comprising:

• operating an electronic evaporator pressure regulator to control a temperature of a refrigeration circuit;
• measuring a parameter from said circuit by a sensor in communication with said circuit;
• and
• controlling said electronic evaporator pressure regulator to control the temperature in said refrigeration circuit by adaptively controlling a suction pressure for said circuit.

A method for controlling a refrigeration system having a compressor rack and a plurality of circuits including a lead circuit, each circuit having at least one refrigeration case, the method comprising:

• positioning an electronic evaporator pressure regulator in communication with each circuit;
• positioning a sensor in communication with each circuit;
• and
• providing a plurality of compressors forming a compressor rack;
• wherein said electronic evaporator pressure regulator may be operated to control a temperature in the at least one refrigeration case by controlling each said electronic evaporator pressure regulator and adaptively controlling a suction pressure of said compressor rack based upon parameters measured by said sensors associated with each of said circuits.

A method for controlling a refrigeration system, comprising:

• positioning an electronic evaporator pressure regulator in communication with a refrigeration circuit;
• positioning a sensor in communication with said circuit;
• and
• communicating a compressor with said circuit;
• wherein said electronic evaporator pressure regulator is operable to control a temperature in said circuit by controlling said electronic evaporator pressure regulator and adaptively controlling a suction pressure of said compressor based upon parameters measured by said sensor.

A method for controlling a refrigeration system, comprising:

• detecting a temperature or pressure value;
• comparing said detected value to a set point value;
• and
• updating an evaporator pressure regulator valve position for a refrigeration circuit based on said comparison to control the temperature in said refrigeration circuit.