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Validation of Novel Wobbe Index Sensor for Biogas Cogeneration

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Abstract:

Biogas is a fuel made from the anaerobic digestion of organic material to form methane. It can be used to power a stationary engine to generate electricity making it a viable method of decentralised power generation from renewables. However, biogas is a mixture of methane and carbon dioxide, and other trace gases such as hydrogen, hydrogen sulphide and oxygen. As such the quality can vary and setting the air-fuel ratio for efficient combustion can be problematic under these conditions. The Wobbe Index, or Wobbe Number, is a quality of combustible gases that allows the air-fuel requirement to be determined. This work presents a novel type of Wobbe Index sensor based on a miniaturised capillary viscometer that can be used with biogas. The sensor is validated at a biogas cogeneration plant which uses a stationary engine and the results are compared to a methane sensor installed at the plant.

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Periodical:

Solid State Phenomena (Volume 254)

Pages:

43-48

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.254.43

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Online since:

August 2016

Authors:

Conor Slater*, Gaël Farine, Thomas Maeder, Peter Ryser

Keywords:

Biogas, CHP, Cogeneration, Natural Gas, Sensor, Wobbe Index

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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References

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