Exergy analysis of the triple e ect parallel ow water-lithium bromide absorption chiller with three condensers

This paper is devoted to the thermodynamic analysis and investigation of the triple eect parallel ow water/lithium bromide chiller with three condensers. For this purpose, the conservation equations governing the cycle are written and the cycle is investigated regarding the rst and second laws of thermodynamics. Next, the thermodynamic states of various points of the cycle, cycle eciency, work and heat transfer, and also the exergy loss in various components of the cycle, are evaluated. Finally, the exergy analysis is carried out and the eect of eective parameters on the cycleʹs better performance has been studied. It was concluded that when the temperature of the hightemperature generator increases, the cycle COP increases and total exergy losses decrease, though the increase in COP and decrease in energy loss become negligible for temperatures higher than 210C. Therefore, further temperature increase does not particularly contribute to an increase in COP or reduction of exergy losses, and this temperature is the most optimal temperature at which both COP and exergy losses have acceptable values.