No abstract

Summary In this research, four multigeneration systems comprising of a syngas‐fuelled solid oxide fuel cell, double‐effect absorption chiller (first configuration), a thermoelectric generator unit (second system), solid oxide electrolyser cell (third configuration), and fuel synthesis unit (fourth configuration) are proposed for cooling, heating, electricity, and hydrogen/synthetic methane production. In Configurations 1 to 3, 25% of the discharged CO2 is reinjected into the gasifier, whereas an additional portion is reused in Configuration 4 for synthetic methane production. Energy, exergy, exergoeconomic, and environmental (4E) analyses are conducted comprehensively. Besides, optimisation based on the genetic algorithm is applied to optimise the system through four different modes, for example, maximum efficiency, minimum product, cost, and cost‐rate. The results show that the second system has the highest exergy efficiency and power output while having the minimum product cost. Configurations 3 and 4 are capable of fuel production, while Configuration 4 concludes the least levelised CO2 emissions; however, having the highest total product cost. The proposed systems have some advantages and drawbacks, so selecting a suitable system depends on the perspective of decision‐makers.

No abstract

No abstract