Heat Exchanger Fouling Detection
First Claim
1. method of detecting an abnormal situation associated with a heat exchanger, comprising:
- receiving measured data pertaining to a process parameter sensed by at least one sensor device associated with the heat exchanger;
determining one or more statistical measures associated with the process parameter using the measured data; and
using the one or more statistical measures associated with the process parameter to detect an abnormal situation within the heat exchanger.
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Accused Products
Abstract
Detection of one or more abnormal situations is performed using various statistical measures, such as a mean, a median, a standard deviation, etc. of one or more process parameters or variable measurements made by statistical process monitoring blocks within a plant. This detection may include determination of the health and performance of one or more heat exchangers in the plant, and in particular, detection of a fouling condition of the one or more heat exchangers. Among the statistical measures, the detection may include calculation of an overall thermal resistance of the heat exchanger, which may be indicative under certain circumstances of heat exchanger performance and in particularly degradation of heat exchanger performance as a result of heat exchanger fouling.
110 Citations
20 Claims
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1. method of detecting an abnormal situation associated with a heat exchanger, comprising:
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receiving measured data pertaining to a process parameter sensed by at least one sensor device associated with the heat exchanger; determining one or more statistical measures associated with the process parameter using the measured data; and using the one or more statistical measures associated with the process parameter to detect an abnormal situation within the heat exchanger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of detecting an abnormal situation in a heat exchanger, comprising:
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providing a plurality of statistical process monitoring (SPM) blocks associated with the heat exchanger, each SPM block receiving measurements of a process parameter associated with the heat exchanger and determining a statistical measure of the process parameter from the process parameter measurements to provide a plurality of statistical measures; providing a baseline value for each of the statistical measures; determining a difference between each statistical measure and its associated baseline value; and detecting the existence of an abnormal situation within the heat exchanger based on the comparison of the statistical measure of the process parameter to the baseline value. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification