Comparative thermoeconomic analyses and multi-objective particle swarm optimization of geothermal combined cooling and power systems

• Novel geothermal systems are proposed for combined cooling and power generation. Parametric multi-objective thermoeconomic optimization comparisons performed. System Conf. (a) has the best power/exergy efficiency (58%) specific cost (30 $/GJ). (b) highest cooling/thermal (43%) (67 The rates of optimised (a)-(c) 440, 560, 600 $/h a given heat source. Comparative parametric analyses three novel performed first (Configuration (a)) consists an absorption cycle ejector refrigeration cycle, second (b)) modified Kalina third (c)) double-flash in all cases generation cooling, respectively. Both thermodynamic (energy, exergy) economic criteria compared to gain understanding characteristics performance these systems, ascertain most appropriate system different scenarios. Results from study show that Configuration output exergy efficiency, but lowest capacity overall (power plus cooling) thermal while efficiency. From exergoeconomic perspective, total cost. (c) maintains, generally, in-between those other two systems. results indicate if considered competing objectives over range well conditions, optimal solutions obtained by LINMAP method Configurations have efficiencies 19.1%, 43.0%, 42.4%, 57.6%, 23.6%, 33.1%, 436 $/h, 558 596 costs 29.7 $/GJ, 66.9 43.5 $/GJ. If rate objectives, corresponding values 13.0%/29.1%/10.5%, 67.3%/30.5%/37.3%, 362/353/384 24.9/67.5/42.7$/GJ,