Patent ID: 6532754
Filing Date: 2003-03-18
Classification: F25B,Y02B

Abstract:
A method of rating a chiller's performance, wherein the chiller's performance is of a chiller that includes a compressor driven by a motor, which in turn is driven by an inverter that creates an electrical output having a variable frequency from an electrical input of a nominal frequency, comprising:determining a part load value that reflects the chiller's performance at a part load condition, wherein the variable frequency of the electrical output at the part load condition is at a reduced frequency that is less than the nominal frequency of the electrical input; determining a full load value that reflects the chiller's performance at a full load condition, wherein the variable frequency of the electrical output at the full load condition deviates from the nominal frequency of the electrical input and is greater than the reduced frequency; and providing a composite rating based on the part load value and the full load value, whereby the composite rating indicates the chiller's performance overall.