Provide some design guidelines by providing some insight on the flow behaviour on the performance of the supercritical fluid (i.e. CO₂) of the dry gas seal.

Study the flow behaviour on the performance of the supercritical dry gas seal at two possible operating conditions; one is close and another is far from critical point.

Provide some insight on impact of centrifugal effect on the performance of the supercritical dry gas seal which is rarely studied even for ideal gas fluid.

Fluid properties and seal performance parameters indicate that close to critical point the real gas effect is significant whereas far from critical point the supercritical fluid resembles an ideal gas.

The centrifugal effect cause a reduction of the opening force at high rotation speed where the centrifugal effect is most significant.

The centrifugal effect also reduces seal leakage, which is beneficial for seal performance.

Operation with supercritical CO₂ close to critical point is not detrimental to seal performance.