An experimental study of the effect of hydrogen blending on laminar flame speed for Iraqi LPG

Abstract EN

An experimental study on laminar flame speed of the premixed Iraqi liquefied petroleum gas (LPG)-hydrogen /air flames is conducted in a centrally ignited constant volume chamber specially constructed by the authors; at different initial pressures (0.1-0.3MPa) and initial temperature of (308 K).

The tests are carried out at a mixture equivalence ratio ranges from 0.8-1.3.

The investigated blends of hydrogen are 0-80% by volume .

Experimental results show that the effect of hydrogen addition becomes obvious when the hydrogen blend is larger than 60%.

When hydrogen blending 80%, the laminar flame speed of LPG also increases from (2.2-4.75 m/s) for stoichiometric mixture at atmosphere pressure.

Increasing initial pressure from (1-3 bar), reduces stretched laminar flame speed of LPG-air mixture from (2.2-1.5 m/s) .