Optimal performance of an irreversible refrigerator With three heat sources (IRWTHS)

Irreversible three-heat-source refrigerator with heat transfer law of QαΔ(T −1) and its performance optimization based on ECOP criterion

“…Finite-time thermodynamics optimization [1][2][3][4][5][6] have been developed to evaluate and enhance the efficiency of this absorption system for cooling application operating between three temperature levels, and a lot of results, which are different from those obtained by using the classical thermodynamics, have been derived. Yan et al [7][8][9], Goktun [10], Bejan et al [11,12], Chen et al [13], Baustita et al [14,15], Grosu et al [16], Wei Han et al [17], Kodal et al [18] and Wu et al [19] analyzed the performance of the three-heat-reservoir endoreversible [7-9, 11, 12, 14] and irreversible [10,13,[15][16][17][18][19] absorption refrigeration cycles with linear heat transfer lawQα (T ). Real heat transfers between heat reservoirs and working substance do not always obey linear (Newtonian) heat transfer lawQα (T ).…”

Thermo-economic optimization of an endoreversible four-heat-reservoir absorption-refrigerator

“…Thus, absorption refrigerators for industrial and domestic use are generating renewed interest throughout the world [1]. In recent years, finite-time thermodynamics [2][3][4][5] has been applied to the performance study of absorption-refrigerators [6][7][8][9][10][11][12][13][14][15][16][17][18], and many results, which are different from those obtained by using classical thermodynamics, have been obtained. Chen et al [17] analyzed the thermo-economic performance of endoreversible threeheat-reservoir absorption-refrigerators based on linear (Newtonian) and linear phenomenological heat-transfer laws by using a finite-time exergeoeconomic optimization method.…”

General performance characteristics of an irreversible vapour absorption refrigeration system using finite time thermodynamic approach

“…But major problem with these systems is low performance than conventional one, hence there is a great need to optimize these systems [6][7][8][9][10][11][12]22,24].…”

“…System is considered externally as well as internally irreversible. For studying the effect of internal irreversibility, two internal irreversibility parameters (R S for generator-absorber assembly and R S for evaporator-condenser assembly) are introduced in the analysis, defined by second law of thermodynamics following Wu and Kiang [13], Goktun and Ozkaynak [14], Goktun [11], Bhardwaj [25]. The absorptionrefrigeration system is considered as combined cycle, consisting of a heat engine and a refrigeration cycle.…”