Software Simulation of Hydrogen Transport using Dense Phase

Using hydrogen instead of natural gas in pipelines is considered as an alternative energy source. Therefore, it is proposed in this paper to transport hydrogen using one of the new methods of transporting Natural Gas, "dense phase". As it was possible to transport natural gas in the dense phase, the purpose of the study is to know the possibility of transporting hydrogen in the dense phase as well. In a dense phase, gas density remains as high as a liquid, whereas its viscosity is very low, closer to that of a gas. In the present study, the governing equations and conditions are presented in a dimensionless form to define the influential parameters describing flow behavior. The numerical solution of these equations is implemented with appropriate boundary conditions using ProMax software for two cases of Hydrogen to provide user-friendly alternatives and offer a wide range of simulation patterns based on selected sets of equations and components. It was also used for comparison and to ensure it produces the same results as previous studies. Velocity inside the pipes is kept appropriately low to prevent corrosion. Velocity, pressure drop, temperature, density, viscosity, and liquid holdup results are obtained based on the influential dimensionless parameters. The results is then validated with previous studies. Despite its density high value decreases, Hydrogen in the dense phase was found to be in liquid form due to its low critical temperature and pressure. Accordingly, the transportation of hydrogen is not recommended.