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Gas energy meter for inferential determination of thermophysical properties of a gas mixture at multiple states of the gas

United States Patent

July 8, 2008
View the Complete Patent at the US Patent & Trademark Office
A gas energy meter that acquires the data and performs the processing for an inferential determination of one or more gas properties, such as heating value, molecular weight, or density. The meter has a sensor module that acquires temperature, pressure, CO2, and speed of sound data. Data is acquired at two different states of the gas, which eliminates the need to determine the concentration of nitrogen in the gas. A processing module receives this data and uses it to perform a "two-state" inferential algorithm.
Morrow; Thomas B. (San Antonio, TX), Kelner; Eric (San Antonio, TX), Owen; Thomas E. (Helotes, TX)
Southwest Research Institute (San Antonio, TX)
11/ 171,977
June 30, 2005
GOVERNMENT LICENSE RIGHTS The U.S. Government has a paid-up license in this invention and the right in certain circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract No. DE-FC21-96MC33033 for the U.S. Department of Energy.