Refrigeration – With indicator or tester – Condition sensing
Reexamination Certificate
2005-10-21
2009-10-06
Jiang, Chen-Wen (Department: 3744)
Refrigeration
With indicator or tester
Condition sensing
C062S127000, C702S182000, C702S183000
Reexamination Certificate
active
07596959
ABSTRACT:
A method for monitoring compressor performance in a refrigeration system includes calculating an isentropic efficiency of a compressor of the refrigeration system, averaging isentropic efficiency over a predetermined period, comparing the average to an efficiency threshold, and detecting a compressor malfunction based on the comparison. The method may be executed by a controller or stored in a computer-readable medium.
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Churiwal Pawan K.
Mathews Thomas J.
Singh Abtar
Woodworth Stephen T.
Emerson Retail Services Inc.
Harness Dickey & Pierce
Jiang Chen-Wen
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