The vaporization of liquefi ed carbon dioxide (LCO 2 ) resulting from heat transfer in undersea pipeline fl ow was examined in

this feasibility study. The study aimed to assess how several factors, including fl ow velocity, temperature, and height, aff ected

the rate at which CO 2 evaporated in a submerged pipeline. Ansys Fluent and Aspen Plus were two simulation tools used for

the analysis. For the assessment, the SRK thermodynamic model was chosen. Start-up, shutdown, and abnormal dynamic

studies were further conducted to ascertain the safe operation of the pipeline using Aspen Plus and Aspen Dynamics. The

study emphasizes the need to account for and consider heat transfer in the design and operation of these pipelines. It also

off ers insightful information about the behavior of CO 2 in undersea pipelines. Reliable seabed and oceanographic data were

obtained with the corresponding temperatures for the prediction of pipeline landfall. The maximum pressure of 76.61 barg

was established at Node 11 but further dropped at the last 200 m pipe segment (N11–N13) to achieve an outlet pressure

of 59.72 barg. The pressure loss was due to gravity, since the fl uid was directed upward to the sea platform. There was a

gradual drop in temperature along the pipeline. The temperature at the pipe outlet was calculated to be 3.33 °C. The results

of this study can be applied to improve effi ciency and lower the risk of accidents associated with the design and operation of

underwater pipelines for the transportation and storage of CO 2 . The fi ndings of this work are signifi cant, since they provide

a thorough grasp of how CO 2 behaves in submerged pipes and knowledge that may be utilized to guarantee the eff ective and

safe transit and storage of this material.