Techno-economic modelling and analysis of CO₂ pipelines

The main focus of this paper is on techno-economic modeling and analysis of CO2 pipelines, as it strives to develop a thorough understanding of the essential fluid-mechanics variables involved in modeling and analysis of such pipelines. The authors investigate and analyze the reasons behind the variations in the techno-economic results generated from seven different techno-economic models which are commonly used for construction and operation of CO2 pipelines. Based on these analyses, a refined and more accurate model is established. The refined model uses the Reynolds number, Colebrook-White equation using the Darcy friction factor, and the Darcy-Weisbach pressure drop equation to establish the most accurate measure for the pipe's diameter. To assess the CO2 pipeline's total capital cost, total annual cost, and the levelized transport cost, a statistical regression analysis approach is suggested and the adjusted-r2 measure is proposed to assess the goodness-of-the-fit of the generated cost function. The accuracy of the new techno-economic model is validated with the figures of a proposed CO2 infrastructure project in the United Kingdom and also through hydraulic modeling.