HC blend– What is the flammability?
To get ignited, the concentration of HC blend in air has to be between the Lower and Upper flammability level. For HC the lower flammability level is 2% and Upper flammability level is 10%. Both the values are on Volume basis. App. gram value of HC for a 2% concentration by volume is 40 gram of HC per m3 of air, for a 10% concentration it is 200 grams per m3 of air; pressure 1 bar.