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| Titel |
Power Plant Emission Monitoring in Munich Using Differential Column Measurements |
| VerfasserIn |
Jia Chen, Hai Nguyen, Francisco Toja-Silva, Ludwig Heinle, Frank Hase, André Butz |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250151674
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| Publikation (Nr.) |
 EGU/EGU2017-16423.pdf |
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| Zusammenfassung |
| Differential column measurements using compact Fourier transform spectrometers
(EM27/SUN) have shown to be an effective method to determine the greenhouse gas
emissions. Citywide measurement campaigns were carried out in Boston, Indianapolis, San
Francisco, etc., focusing on city (e.g. emissions from natural gas infrastructure) and local
sources. We are particularly working on validating this novel method for attributing and
quantifying local emission sources. Optimal strategies are developed for measuring in
different seasons with various sun elevations.
We have deployed two spectrometers to monitor the CO2 and CH4 emission
rates (kg s−1) of a natural gas fired combined heat-and-power plant in Munich,
Germany (Heizkraftwerk Süd). We placed our spectrometers in the vicinity (<800 m)
of the power plant and measured the differences between the column-averaged
dry-air mole fractions at a downwind and a non-downwind site of the power plant
(ΔXCO2 and ΔXCH4). Measurements in summer and winter have been carried
out.
We compared the measured data of ΔXCO2 with the results of a Gaussian plume model
and a computational fluid dynamics simulation using OpenFOAM. The determined emission
rates agree well with our a priori knowledge of the inflow.
In this work, we discuss the accuracy of the differential column measurements for
determining power plant emissions and explore their sensitivities to meteorological and
model parameters. In addition, we present measurement strategies and experimental design
criteria for different meteorological conditions and time of the year, including winter when
the sun elevation is low and the column inclination becomes very important. Differential
column measurements using compact spectrometers are shown to be a reliable method to
monitor power plant emissions. |
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