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Determination of the Constituents in a Gas Mixture with a Novel GasAnalyzer
KTH, School of Electrical Engineering (EES), Microsystem Technology.
2011 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The thesis evaluates the GAP, Gas Analyze Prototype, which uses MEMS (Microelectro-mechanical-system) technology to quantify up to four different concentrations in an unknown gas mixture. The GAP is based on independent bulk equations and uses density, viscosity and specific heat constants together with measurements extracted from transducers to determine the concentrations of gas elements in a gas mixture. Experiments were made where humidity, temperature, pressure and different concentrations compositions of air where tested in order to extract data for further evaluation and understanding of the limitations of the GAP. The conclusion drawn from the experiments is that it is possible to determine the concentrations of the constituents of air with the GAP. It was also found that the basic equations tend to result in unrealistic concentration values. Therefore, to get correct concentration values more complex equations should be used. Due to inadequate software, the full capacity of the prototype was not tested, i.e. only the gas-mixture of air could be tested. Further work is needed to grasp the full capacity of the GAP.

Place, publisher, year, edition, pages
2011. , 96 p.
EES Examensarbete / Master Thesis, XR-EE-MST 2011:001
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-55472OAI: diva2:471678
Educational program
Master of Science in Engineering - Vehicle Engineering
Available from: 2012-01-19 Created: 2012-01-02 Last updated: 2012-03-16Bibliographically approved

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