A Multi-Objective Optimisation Decision Tool for Preliminary Design of Co2 Transport Pipelines

A multi-objective optimisation methodology based on determining economic and environmental key performance indicators is presented and tested as a decision tool supporting the preliminary design of Carbon Capture and Storage (CCS) CO2 transport pipelines. The above involves determining Pareto-optimal design trade-offs for a realistic point-to-point supercritical CO 2 pipeline case-study using Level Diagrams and choosing the Nominal Pipe Size (NPS) as a decision variable. A quantitative procedure entailing the definition and aggregation of economic and environmental impact indicators is then developed to identify the most cost-effective and environment-friendly design trade-off. The outcome is compared against the minimisation of single-objective cost indicators based on the CO 2 avoided and carbon pricing concepts. The above allows the decision makers the flexibility where each pertinent impact category may be appropriately weighed according to either local sustainability policies or case-specific expert judgment to arrive at the most economic and environmentally sustainable pipeline transport solution