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Key performance index calculation and real-time condition monitoring methods for heat exchanger

  • US 20060144057A1
  • Filed: 12/28/2005
  • Published: 07/06/2006
  • Est. Priority Date: 12/30/2004
  • Status: Abandoned Application
First Claim
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1. A method for calculating key performance indexes relating to a heat exchanger of a chiller, comprising:

  • defining running indexes for the heat exchanger of the chiller;

    obtaining an outlet temperature of output matter of the heat exchanger according to the running indexes, at least comprising load temperature, load current, inlet temperature of cooling matter, outlet temperature of the cooling matter, and inlet temperature of the output matter;

    obtaining a performance index according to the inlet and outlet temperatures of the output matter and the load current of the heat exchanger;

    obtaining a predicted performance index according to the inlet temperature of the output matter, a predicted outlet temperature of the output matter, and the load current;

    obtaining a real performance index according to the inlet temperature of the output matter, real outlet temperature of output matter, and the load current; and

    obtaining a key performance index according to the predicted and real performance indexes.

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