Abstract :
In this study, a modified ecological function is presented for four-temperature-level absorption refrigerators, and an
absorption refrigerator has been optimized using this function. An equivalent system was initially identified,
followed by the application of the first and second laws of thermodynamics. Next, the optimization results were
interpreted. The results of the optimization process, optimum point of xH, xR, aH, and aR, were defined as 0.87, 0.58,
2.41, 0.25, respectively. In addition to that, the effects of xH, xR, aH, aR, Ta, Tc, Te, and Tg were shown according to
exergy destruction, ecological function, coefficient of performance, and cooling load. As a result, it was understood
that especially the xH, parameter, and the generator temperatures are the variables of the system that require
special attention because, at some points, they cause that generator and absorber transfer heat in the opposite
direction they need to do.
