Thermoeconomic analysis of a novel steam turbine based multi-generation system combined with ejector cooling

This research evaluates a novel multi-generation system from both thermodynamic and economic perspectives. The system consists of a Rankine cycle, which serves as the primary energy source, and a sulfur dioxide-based ejector cooling system. Waste heat recovered from the steam turbine is utilized by a steam heat exchanger generator, while the ejector cooling system meets the required cooling load. The present study investigates a system that employs a steam turbine, a choice motivated by its potential to reduce emissions, enhance system performance, and increase economic efficiency compared to using a gas turbine. A parametric analysis is conducted to investigate the sensitivity of system performance to variations in key operational parameters. The thermodynamic analysis reveals that the proposed system achieves an energy efficiency of 20% and an exergy efficiency of 26%. This system incurs a cost of $233 per gigajoule (GJ) according to the economic analysis. Notably, it combines favorable economics with low emission levels and excellent thermodynamic performance.

Thermoeconomic analysis of a novel steam turbine based multi-generation system combined with ejector cooling Keywords:

Rankine cycle , ejector , heat loss , economic analysis , heat exchanger