Method of monitoring an air operated heat exchanger and an air operated heat exchanger
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United States of America Patent
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Mar 26, 2019
Grant Date -
Aug 18, 2016
app pub date -
Oct 13, 2014
filing date -
Oct 15, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An air operated heat exchanger has a plurality of process tubes for process fluid, a plurality of rotating fans to move ambient air along an air stream path past the plurality of process tubes. At least one optical fiber is configured within the one or more air stream paths. At least one light pulse is passed into the at least one optical fiber, and at least one optical signal is detected from the at least one optical fiber in response to the at least one light pulse, to provide at least one signal profile. One or more air temperatures at a plurality of locations along the at least one optical fiber are determined from the at least one signal profile and evaluated against one or more comparison operational conditions.
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