Abstract
This study intends to improve the accuracy of the concentration and flow measurement system for binary gas mixtures that was developed by two of the present authors1). This system is composed of a venturi tube and a laminar flowmeter connected in series. A basic examination on the viscosity estimate for binary gas mixtures and a preliminary measurement of the flow coefficient of the venturi tube are carried out. The procedure of concentration calculation based on the basic study is also shown. The estimate accuracy of the mole fractions of component gases and the flow rate of binary gas mixtures are experimentally examined using three kinds of mixed gas: CO2-Air, CO2-Ar and Ar-He. The results indicate that the mole fractions can be estimated with accuracy of 5% and the flow rate can be estimated with accuracy of 2%.
