Key performance index calculation and real-time condition monitoring methods for heat exchanger
First Claim
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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Accused Products
Abstract
A method for calculating key performance indexes. The method comprising defining running indexes for a heat exchanger of a 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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Citations
10 Claims
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1. A method for calculating key performance indexes relating to a heat exchanger of a chiller, comprising:
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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. - View Dependent Claims (2)
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3. A real-time condition monitoring method for a heat exchanger of a chiller, comprising:
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retrieving historical running data relating to a heat exchanger of a chiller creating an outlet temperature prediction model for output matter of the heat exchanger according to the historical running data;
predicting an outlet temperature of the output matter of the heat exchanger using the outlet temperature prediction model and obtaining a predicted performance index according to the outlet temperature;
retrieving real-time running data relating to the heat exchanger, obtaining a real performance index relating to the heat exchanger according to the real-time running data, and obtaining a key performance index relating to the heat exchanger according to the predicted and real performance indexes;
monitoring the heat exchanger according to the key performance index using statistical methods; and
determining running conditions relating to the heat exchanger according to monitoring results. - View Dependent Claims (4, 5, 6)
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7. A storage medium for storing a computer program providing a real-time condition monitoring method for a heat exchanger of a chiller, comprising using a computer to perform the steps of:
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retrieving historical running data relating to a heat exchanger of a chiller creating an outlet temperature prediction model for output matter of the heat exchanger according to the historical running data;
predicting an outlet temperature of the output matter of the heat exchanger using the outlet temperature prediction model and obtaining a predicted performance index according to the outlet temperature;
retrieving real-time running data relating to the heat exchanger, obtaining a real performance index relating to the heat exchanger according to the real-time running data, and obtaining a key performance index relating to the heat exchanger according to the predicted and real performance indexes;
monitoring the heat exchanger according to the key performance index using statistical methods; and
determining running conditions relating to the heat exchanger according to monitoring results. - View Dependent Claims (8, 9, 10)
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Specification