Validation of Novel Wobbe Index Sensor for Biogas Cogeneration

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.

Published in:
Solid State Phenomena, 254, 43-48
Presented at:
6th International Conference Advanced Materials and Structures, Timişoara (RO), 16-17.10.2015
Trans Tech Publications

Note: The status of this file is: EPFL only

 Record created 2016-09-08, last modified 2019-03-17

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