Experimental Study of Characteristics of LPG-hydrogen Jet Diffusion Flames

This study presents the experimental investigation of flame length, lift-off velocity and lift-off heights of jet diffusion flames fuelled by a mixture of Liquefied Petroleum Gas (LPG) and hydrogen. LPG is commonly used domestic, automotive and industrial fuel that is around two times heavier than air. When hydrogen is added to LPG, significant flame control and lift-off stability is achieved. Results show that, with the addition of hydrogen, the flame length is decreased and lift-off occurs at higher fuel flow rate; the lift-off height also decreases. Increased heating value, increased diffusivity and increased reactivity are the reasons for increased stability.