Method and system for monitoring emissions from an exhaust stack
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United States of America Patent
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Jan 30, 2018
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app pub date -
Nov 12, 2015
filing date -
Nov 12, 2014
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Abstract
There is described a method for remotely monitoring an exhaust plume emitted by an exhaust stack, the method comprising: determining a velocity of a flow of the exhaust plume at an output of the exhaust stack, the exhaust plume comprising one molecule; propagating a first light within the exhaust plume, the first light being propagated in close proximity to the output of the exhaust stack; detecting a second light emitted by the exhaust plume and measuring an energy of the second light, the second light resulting from an interaction of the first light with the exhaust plume; and determining a mass emission rate of the at least one molecule using the measured energy of the detected second light, the velocity, and a surface area of the exhaust plume at the output of the exhaust stack, the surface area being orthogonal to a direction of the flow of the exhaust plume.
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