Method and apparatus for heat flow measurement

Details Method and apparatus for heat flow measurement Method and apparatus for heat flow measurement

G - Physics

01

F

73/95

G01F 1/00 (2006.01) G01N 25/22 (2006.01) G01N 31/10 (2006.01) G01N 31/12 (2006.01) G05D 7/00 (2006.01)

Patent

CA 1168062

- 10 - CASE 4297 METHOD AND APPARATUS FOR HEAT FLOW MEASUREMENT ABSTRACT OF THE DISCLOSURE A method and apparatus whereby a heat flow characteristic of a combustible gas, such as the Wobbe Index, can be det- ermined as a function of the oxygen required for complete com- bustion of the gas. The gas and a flow of air greater than that required for complete combustion of the gas are main- tained under predetermined pressure and flow conditions, and mixed, after which the mixture is subjected to complete com- bustion and directed to an oxygen analyzer where the amount of oxygen remaining in the mixture is measured as a deter- minant of the oxygen required for complete combustion. In an alternative embodiment of the present invention, the air flow is controlled by a valve which is positioned to maintain a constant output of oxygen from the analyzer, the position of the valve being proportional to the heat flow characteristic of the gas.

381854

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