Methane Number
Methane Number
(OP)
What is the best method for calculating the methane number of a gas? Clarke Energy's website suggests that methane, having a high knock resistance is given a value of 100. Hydrogen given a value of 0. Also there are gases with a knock-resistance higher than 100. Does anyone know which gases would have these characteristics? I have historically worked in the biogas combined heat and power sector where methane number is not typically an issue due to the high methane number of biogases.
Thanks in anticipation of your assistance.
Thanks in anticipation of your assistance.





RE: Methane Number
L ong chain hydrocarbons (propane, butane etc) have very low methane number and can dramatically reduce the methane number of the gas mixture. Natural gas from the North Sea containers propane and butane and thus the methane number can be as low as 70.
Natural gas from Siberia is nearly 100% methane, and thus the methane number can be over 85.
Methane number does not depend on the arithmetic ration between the gases, so a calculation has to be performed
The engine makers do not seem to release their calculation program's, so you have to approach then each time.
RE: Methane Number
RE: Methane Number
RE: Methane Number