Measurement of methane content in upgraded biogas using pulse-echo ultrasound
2008 (English)In: Proceedings of the International Congress on Ultrasonics: Vienna, April 9-13, 2007, Paper ID 1366, Session R03: Acoustic sensors, 2008Conference paper (Refereed)
In this paper we present an ultrasonic pulseecho technique for estimating the methane (CH4) content in binary mixtures of CH4 and carbon dioxide (CO2). The method is based on parametric estimation of phase velocity and frequency dependent attenuation in combination with Partial Least-Squares Regression (PLSR). The technique is verified using experiments on mixtures with a volume fraction of CO2 in the range of 0 % -10 %. The experiments show that the CH4 content can be accurately estimated with high repeatability.
Place, publisher, year, edition, pages
Research subject Signal Processing
IdentifiersURN: urn:nbn:se:ltu:diva-28641DOI: 10.3728/ICUltrasonics.2007.Vienna.1366_carlsonLocal ID: 282d7af0-c290-11db-9ea3-000ea68e967bOAI: oai:DiVA.org:ltu-28641DiVA: diva2:1001843
International Congress on Ultrasonics : 09/04/2007 - 12/04/2007
Godkänd; 2007; 20070206 (johanc)2016-09-302016-09-30Bibliographically approved