Thermoeconomic analysis of a microcogeneration system using the theory of exergetic cost

Cogeneration and trigeneration systems have been broadly employed as part of the strategies oriented toward rational energy use. The assessment these must include simultaneous considerations costs, irreversibility, losses, their causes. This work presents a step-by-step thermoeconomic analysis microcogeneration unit, composed an internal combustion engine ammonia-water single-effect absorption refrigeration chiller. research Theory Exergetic Cost method to determine monetary costs exergy efficiency equipment. It is therefore possible identify which pieces equipment present highest impact focus on improve overall performance system. Although not Cost, exergoeconomic parameters can be calculated expand further. specific cost associated with endothermic reaction inside absorber (282 $/GJ), while lowest due electricity consumed by pump system (2.16 $/GJ). was identified at condenser (almost 90%, values under 40% were obtained for engine, pump, absorber. combined results indicates that performances are related generator, absorber, evaporator, regenerator.