Method and system for measuring emission rate of airborne emission species
AssigneeAeromon Oy
InventorsMatti IRJALA, Jouko SALO
Life of this patent
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Abstract
A method and system for measuring emissions rate of airborne emission species from an emission site includes releasing tracer gas species from a tracer gas source at a determined tracer gas mass flow rate, providing an unmanned aerial vehicle, controlling the unmanned aerial vehicle to flight along a first flight trajectory, measuring at different altitudes concentration of at least one airborne emission species emitted from the emission site, and concentration the tracer gas species emitted from the tracer gas source. The method further includes determining emission rate of the at least one airborne emission species from the emission site at the different altitudes of the first flight trajectory.
Claims23
A method for measuring emission rates of airborne emission species from an emission site the emission site emitting one or more airborne emission species, the method comprising:
- releasing tracer gas species from a tracer gas source at a determined tracer gas mass flow rate, the tracer gas source being provided to the emission site or in the vicinity thereof,
- providing an unmanned aerial vehicle comprising:
- a control system for controlling flight of the unmanned aerial vehicle, and
- an analyser unit provided to the unmanned aerial vehicle;
- controlling the unmanned aerial vehicle with the control system to flight along a first flight trajectory in vicinity of the emission site the first flight trajectory comprising different altitudes;
- measuring at different altitudes with the analyser unit of the unmanned aerial vehicle during the flight of the unmanned aerial vehicle along the first flight trajectory:
- concentration of at least one airborne emission species emitted from the emission site, and
- concentration of the tracer gas species emitted from the tracer gas source;
- and
- determining emission rate of the at least one airborne emission species from the emission site at the different altitudes of the first flight trajectory based on:
- the determined tracer gas mass flow rate of the tracer gas species released from the tracer gas source,
- measured concentration of the tracer gas species emitted from the tracer gas source, and
- measured concentration of the at least one airborne emission species emitted from the emission site.
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A system configured to measure emissions rate of airborne emission species from an emission site the emission site emitting one or more airborne emission species, the system comprising:
- a tracer gas source configured to release tracer gas, the tracer gas source being arranged to the emission site or in vicinity thereof and comprising a flow controlling device configured to determine tracer gas mass flow rate of the tracer gas from the tracer gas source:
- an unmanned aerial vehicle comprising:
- a control system for controlling flight of the unmanned aerial vehicle, the control system being configured to control the unmanned aerial vehicle to flight along a first flight trajectory in vicinity of the emission site, the first flight trajectory comprising different altitudes, and
- an analyser unit provided to the unmanned aerial vehicle, the analyser unit being configured to measure at different altitudes concentration of at least one airborne emission species emitted from the emission site and concentration the of tracer gas species emitted from the tracer gas source during the flight of the unmanned aerial vehicle along the first flight trajectory;
- and
- a processing unit configured to calculate emission rate of the at least one airborne emission species from the emission site at the different altitudes of the first flight trajectory based on:
- the determined tracer gas mass flow rate of the tracer gas species released from the tracer gas source,
- measured concentration of the tracer gas species emitted from the tracer gas source, and
- measured concentration of the at least one airborne emission species emitted from the emission site.
Dependencies are inferred from the claim text.