文摘
Accurate densities of CO2–CH4 were measured at 300–308.15 K and 2–18 MPa by MSB. Combined standard uncertainty of T, p , and uM(ρ)uM(ρ) are 0.02 K, 0.001 MPa and 0.029 kg·m−3. The measured density agrees well with GERG-2008 as x < 0.60 with deviation within 2.0%. The max deviation with GERG-2008 appears as T–p close to critical point at high x.