2 replies to this topic

[stu]

Dear sir,
What is Methane number & Wobbe index.
Where we use it.
How do we calculate it.Is there any relation between them.
Please explain.
Thanks
Stu.

[lacertian]

Wobbe number is a combustion index for gases. It it the calorific value of the gaseous fuel divided by its specific gravity (relative to air). This might be of use:

http://www.arb.ca.go...ng-lpg/appe.doc

[gvdlans]

I am quite certain you will easily find the answers to your questions by doing a Google search. See for example http://www.apvgn.pt/...v_rep_part2.pdf pages 4 and 5. Also wikipedia gives a good hit: http://en.wikipedia....iki/Wobbe_index

As can be seen in the wikipedia article, Wobbe Index is the Higher Heating Value of a gaseous fuel divided by the square root of its specific gravity