G - Physics – 01 – N
Patent
G - Physics
01
N
341/16, 73/95
G01N 31/12 (2006.01) G01N 33/22 (2006.01)
Patent
CA 1196799
APPLICATION OF SAMUEL A. ARCARA FUEL ENTRAINED OXYGEN COMPENSATION FOR CALORIFIC CONTENT ANALYZER ABSTRACT A colorific content analyzer for determining the calorific content of a combustible gas has a compensation means for compensating the analysis of the calorific content for fuel entrained oxygen. The gas is combusted to achieve substantially stoichiometric combustion by varying the air/fuel ratio supplied to a combustion chamber by a rotary valve which is speed controlled in response to a sensing of oxygen in the combustion products. A first measurement of the calorific content of the fuel gas is made using a normal operation of the analyzer and a second measurement is made using a known amount of air added by the rotary valve to the combustible gas stream. The true air/fuel ratio and the calorific content of the fuel gas is then computed using a predetermined relationship among the system variables.
433452
Honeywell Inc.
Smart & Biggar
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