Near-critical CO2 flow for carbon capture and storage

Farzan Kazemifar, Dimitrios C. Kyritsis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Handling CO2 flow rates for the purposes of capture and sequestration necessitates high pressure and low temperature (in order to maximize density and minimize volumetric flow rate) which brings the flow close to the critical point of CO2 at approximately 74 bar and 31°C. We are presenting a first experimental investigation of several properties of two near-critical CO2 flows, namely pipe flow and Joule-Thompson throttling. Shadowgraph technique was employed to visualize the pipe flow structure in an optically accessible test section. CO2 was compressed in a 1-liter hydraulic accumulator using highpressure nitrogen. Downstream of the cylinder was the test section and a needle valve that controlled the mass flow rate. The results indicated a strong sensitivity of the pressure drop in the pipe on inlet conditions near the critical point. Due to the fact that the isothermal compressibility is very large near the critical point it is very difficult to control the density in the vicinity of the critical point.

Original languageBritish English
Title of host publication8th US National Combustion Meeting 2013
Number of pages7
ISBN (Electronic)9781627488426
StatePublished - 2013
Event8th US National Combustion Meeting 2013 - Park City, United States
Duration: 19 May 201322 May 2013

Publication series

Name8th US National Combustion Meeting 2013


Conference8th US National Combustion Meeting 2013
Country/TerritoryUnited States
CityPark City


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