Patent ID: 6745708
Filing Date: 2004-06-08
Classification: F23C,F23N,F27D

Abstract:
A method of optimizing the efficiency of a combustion device comprising at least three control zones, each of said control zones comprising at least one burner assembly, said method comprising:a) individually supplying fuel to each of said burner assemblies in each of said control zones; b) individually measuring a combustion characteristic of the collective combusted gas from said burner assemblies in each of said control zones, wherein said combustion characteristic is oxygen concentration; and c) individually adjusting the flow of air to each of said burner assemblies in each of said control zones in response to the value of said combustion characteristic corresponding to each of said control zones to keep the value of said combustion characteristic within a predetermined range, wherein said step of individually adjusting the flow of air to each of said burner assemblies in each of said control zones is performed such that the oxygen concentration in said collective combusted gas for each of said control zones is in the range of from about 0.5 to about 5.0 volume %, based on the total volume of said collective combusted gas.