Method and system for determining the fractions of a streaming gaseous medium

The invention relates to a method and a system for determining the fractions of a flowing gaseous medium that comprises a known plurality N of known components. The method comprises the steps for determining at least N-1 parameters of a flowing gaseous medium. The N-1 parameters are chosen from a group of quantities comprising mass flow, density, viscosity, and heat capacity. At least N-1 reference values are provided for each of the known N components relating to each of the determined N-1 quantities. The fraction of each of the known components of the supplied gaseous medium is determined through solving of at least N equations. The N equations comprise N-1 equations which describe each determined parameter as a function of the fraction and the reference values, plus an equation that sets the sum of the fractions so as to be equal to 100%. 本发明涉及种用于确定流动气体介质的分数的方法和系统，流动气体介质包括已知的N种已知组分。该方法包括用于确定流动气体介质的至少N-1个参数的步骤。N-1个参数选自包括质量流量、密度、粘度和热容量的组量。对于与所确定的N-1数量的每个相关的已知的N个分量，至少提供了N-1个参考值。通过求解至少N个方程式来确定所提供的气体介质的每种已知组分的分