Fuel entrained oxygen compensation for calorific content analyze

Details Fuel entrained oxygen compensation for calorific content analyze Fuel entrained oxygen compensation for calorific content analyze

1982-10-06

1985-04-16

Frankfort, Charles

Thermal measuring and testing

Calorimetry

Heat value of combustion

374 36, G01N 2522

Patent

active

045112622

ABSTRACT:
A calorific content analyzer for determining the calorific content of a combustible gas while 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.

REFERENCES:
patent: 4337654 (1982-07-01), Austin et al.
patent: 4351614 (1982-09-01), Garnier
patent: 4382698 (1983-05-01), Szonntagh
patent: 4386858 (1983-06-01), Kude et al.
patent: 4396299 (1983-08-01), Clingman, Jr. et al.

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