Variable speed condenser fan control system
AssigneeEmerson Retail Services, Inc.
InventorsAbtar Singh, Thomas Mathews, Frank Brown, Ozgur Gurkan
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Abstract
A controller comprises a first input that receives a signal indicating an energy consumption value of a compressor, a second input that receives a signal indicating an energy consumption value of a variable speed condenser fan, and an output that provides a control signal to the variable speed condenser fan. The controller also comprises a memory that stores a condenser set point, and a processor in communication with the input, output and memory and that modulates the condenser set-point to minimize energy consumption and controls the variable speed condenser fan based on the condenser set-point.
Claims34
A controller comprising:
- a first input that receives a signal indicating an energy consumption value of a compressor;
- a second input that receives a signal indicating an energy consumption value of at least one variable speed condenser fan;
- an output that provides a control signal to said at least one variable speed condenser fan;
- a memory that stores a condenser set-point;
- and
- a processor in communication with said input, output and memory and that modulates said condenser set-point to minimize energy consumption and controls said at least one variable speed condenser fan based on said condenser set-point.
A method comprising:
- monitoring an energy consumption of a compressor and at least one variable speed condenser fan of a refrigeration system;
- controlling said at least one variable speed condenser fan based on a condenser set-point;
- and
- modulating said condenser set-point to minimize said energy consumption.
Dependencies are inferred from the claim text.