Refrigeration rack monitor

A refrigeration system, comprising:

• a vapor compression circuit comprising a compressor, a condenser, and an evaporator;
• one or more pressure sensors each fluidly coupled with the vapor compression circuit at a different location;
• one or more temperature sensors each thermally coupled with the vapor compression circuit at a different location;
• and
• a controller configured to receive real time performance metrics from the one or more pressure sensors and the one or more temperature sensors, the controller further configured to:
• generate a first set point that corresponds a quantity of deviation between the real time performance metrics and a performance curve of the compressor;
• generate a second set point that corresponds to a quantity of time for a deviation between the real time performance metrics and the performance curve of the compressor;
• compare the real time performance metrics to the performance curve of the compressor to determine when the real time performance metrics have exceeded one or more of the generated first and second set points;
• and
• output a first alarm when the real time performance metrics have exceeded the first set point and output a second alarm when the real time performance metrics have exceeded the second set point.

A non-transitory computer readable medium having computer readable instructions stored thereon that are executable by a processor to:

• determine a manufacturer of a compressor;
• receive a manufacturer performance curve for the compressor based on the determined manufacturer of the compressor;
• monitor real time performance metrics of the compressor including pressure readings upstream of a throttling valve and pressure readings upstream of an expansion valve;
• normalize the real time performance metrics with the manufacturer performance curve;
• generate health information for the compressor based on a comparison of the manufacturer performance curve and the normalized real time performance metrics;
• and
• selectively output an alert based upon the generated health information.