Method for measuring of gaseous emissions and/or flux

Details Method for measuring of gaseous emissions and/or flux Method for measuring of gaseous emissions and/or flux

2005-03-08

2005-03-08

Rosenberger, Richard A. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C250S338500

Reexamination Certificate

active

06864983

ABSTRACT:
Method for measuring gaseous emissions and/or flux based on using a spectrometer instrument for receiving absorption spectra to detect and record, in a wavelength-resolved manner, the electromagnetic radiation which is coming directly from the sun. The instrument is arranged in such a way that the connecting line between the instrument and the sun transects a gas volume which constitutes all or part of the gas flow emitted from a source. The electromagnetic radiation which is recorded is used for calculating the gas concentration along the optical connecting line in the gas volume. The concentration which is obtained in this way, and which is integrated over the cross-sectional area traversed by the connecting line, is used, together with information on the speeds of the wind, the instrument and the gas-emitting source, to calculate the gas flow through the cross-sectional area which is traversed.

REFERENCES:
patent: 3849005 (1974-11-01), Girard et al.
patent: 3868186 (1975-02-01), Paukert et al.
patent: 4605313 (1986-08-01), Kebabian
patent: 5391883 (1995-02-01), Kinsey et al.
C. Paton Walsh et al., “An Uncertainty Budget for Ground-Based Fourier Transform Infrared Column Measurements of HCl, HF, N2O, and HNO3Deduced from Results of Side-By-Side Instrument Intercomparisons,” Journal of Geophysical Research, V. 102, 1997, pp. 8867-8873.

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