Experimental Analysis and Numerical Simulation on Measurement of Temperature Distribution During Oscillating Combustion in a Crucible Furnance

Abstract

ABSTRACT newlineThe premier objective of the research is to implement the concept of Oscillation Combustion Technology on gaseous fuels with ambient conditions on a crucible furnace installed with an Oscillating Valve . Oscillating combustion is gaining importance these days. Several researchers are studying on the effects of oscillations in combustion in enhancing heat transfer, the temperature distribution in the furnace load and reduction in emissions. Different kinds of oscillating mechanisms were implemented to create oscillations in the combustion for the research. This research aims at design and fabrication of an electromechanical butterfly valve drive system based on a crank lever mechanism is designed, fabricated and developed by the author as a retrofit to the conventional combustion system to study and investigate oscillating combustion technology in a crucible furnace. The butterfly valve can be operated at specified frequencies and amplitudes. There are many challenges to transform this concept into user-friendly product, especially achieving oscillations in the fuel flow, fuel economy, low-cost and reductions in emissions, melting time and increase in the thermal efficiency of the furnace. The furnace working model is designed and established purely on the thermodynamic, heat transfer and kinematics of machine principles and equations of conservation of mass, momentum and energy of fuel supplied to the furnace along with air. newlineThe experimental investigations have been conducted and operated with different frequencies at 3 Hz, 5 Hz and 7 Hz also amplitudes 30 newlineiv newline0 newline, 60 newline0 newline and 90 newline0 newline also on the rich air- fuel mixture (16:1), optimum (stoichiometric) air-fuel mixture (17:1) and excess (lean) air-fuel mixture (18:1) and different aluminium loads of 5kg, 10kg and 15kg. The best benefits of oscillating combustion technology are simple, innovative, durable, feasible and easy to implement in all heat transfer industries. This technology reveals that oscillations during combustion show significance on perfo