Effect OF CO2/N2 dilution on laminar burning velocity of liquid petroleum gas-air mixtures at elevated temperatures. (1st April 2016)

• Record Type: Journal Article
• Authors: Nair, Aswathy; Velamati, Ratna Kishore; Kumar, Sudarshan
• Is Part Of: Energy. Volume 100(2016)
• Page Start: 145
• Page End: 153
• Publication Date: 2016-04-01
• Subjects: Laminar burning velocity -- Mesoscale channel -- Temperature exponent -- LPG; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2016.01.094
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: The present experimental study reports the effect of CO2 /N2 dilution on laminar burning velocity of premixed LPG (liquid-petroleum-gas)-air mixtures at elevated temperatures using a preheated mesoscale diverging channel technique. The experiments were carried out for a range of equivalence ratios varying from 0.8 < Φ < 1.3 with percentage dilution of the fuel component by volume (β) for CO2 varying from 10% < β < 30% and N2 varying from 10% < β < 40%. A power–law correlation has been obtained for the present experimental data as a function of percentage dilution, mixture temperature and equivalence ratio. It has been observed that an increase in dilution with CO2 /N2 leads to an increase in temperature exponent (α). The increase in temperature exponent due to CO2 dilution is more pronounced as compared to N2 dilution case. A flame structure study has been carried out to understand the effect of mixture temperature and diluent using USC (University of Southern California) Mech II reaction mechanism. Highlights: Effect of CO2 /N2 dilution on burning velocity of LPG-air mixtures investigated. Burning velocity correlation of LPG-CO2 /N2 -air mixtures at high temperatures. Temperature exponent (α) increases with dilution for both N2 and CO2. Flat flames stabilized using a preheated mesoscale diverging channel technique.