Research On Flame Suitability Of Chinese Range

Flame shapes directly decide the velocity fields, temperature fields, and have a significantimpact on the heat transfer in the furnace. But in the design and operation progress, the burnerand furnace structure are often chosen by experience, the consequence is the mismatch of flameshape and furnace structure and can not reach the ideal efficiency of heat transfer and causeslarge energy waste and serious environmental pollution problem. Aim at the above-mentionedproblems, this article concentrates on the study of flame suitability with choosing integratedChinese ranges as research object and using theoretical analysis and numerical simulation.Numerical simulation was taken to study the combustion process in the furnace. Thenanalysis the flame shapes, velocity fields, temperature fields and heat transfer with the simulationresults. The analyzed results indicate that the flame in the furnace is typical diffusion flame,which can keep a distinct shape, and the cauldron bottom has high heat intensity with jetimpinging heat transfer.Analysis the affects of spray cone angles and furnace structures to flame shapes and heattransfer in the furnace. The analyzed results indicate that flame turns to be short and wide withthe increasing of spray cone angle, which changes the ratio of convection heat transfer andradiant heat transfer, while the total heat transfer changes little without the changing of furnacestructures. Flame becomes long and thin and the heat transfer rate first increases, then decreaseswith the increasing of furnace height and diameter, so it will enhance the heat transfer in thefurnace with properly increasing furnace structures.Summarize and establish flame suitability calculation mathematical model, which is provedto be high accurate by contrasting the simulation results. In order to increase the practicability ofthis model, construct a calculation program, so we can calculate the heat transfer of the furnacewith the given dates, such as flame shape, velocity fields and furnace structures and evaluate theflame suitability, which has practical value in guiding the design of furnace structure andcombustor selection.