Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.
Experiments were conducted to study the influence of
hydrogen enrichment on heating performance of LPG-fired
inverse diffusion flame. Structure of the open flame was first
measured to provide a basis for comparison. Heating
performance of the inverse diffusion flame burning mixed
LPG/hydrogen fuel at various hydrogen fractions was then
studied by measuring the heat transfer from the flame to an
impingement plate. Heat flux transfer from various points
arranged at different burner-to-plate distance (H/dair) and radial
distance from stagnation points (r) were measured. The mixed
LPG/hydrogen fuel for experimental investigation contained
hydrogen fraction ranged from 0% to 50%. The Air jet
Reynolds number, which dominates the hydrodynamic
characteristics of the impinging inverse diffusion flame, was
ranged from 2000 to 4000 in the study. The overall equivalence
ratio of the air/fuel mixture was ranged from 1 to 2.2, in order
to cover the fuel-lean and fuel-rich conditions. Effect of the
non-dimensional burner-to-plate distance (H/dair) on the heat
transfer performance was also reported.
