Table 3 Comparison of the properties of supercritical CO₂ at different pressures with water at atmospheric pressure for different operating temperatures³³.

Pressure of CO₂ (bar)	Avg. Temperature, T_avg(°C)	Density ratio, ρ_CO2/ρ_Water	Specific heat ratio, C_{p_CO2}/ C_{p_Water}	Thermal conductivity ratio, k_CO2/k_Water	Viscosity ratio, μ_CO2/μ_Water	Ratio of volumetric coefficient, β_CO2/β_Water
75	41	0.23	0.75	0.05	0.03	56.68
	46	0.21	0.59	0.05	0.03	37.89
	51	0.19	0.50	0.05	0.04	28.21
80	41	0.27	1.05	0.06	0.03	83.50
	46	0.24	0.72	0.05	0.04	48.29
	51	0.22	0.58	0.05	0.04	33.70
90	41	0.44	2.89	0.11	0.05	240.54
	46	0.33	1.27	0.07	0.04	91.65
	51	0.28	0.83	0.06	0.04	51.69

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