Akademik Veri Yönetim Sistemi
HEAT TRANSFER RESEARCH, cilt.00, sa.00, ss.1, 2024 (SCI-Expanded)
This study analyzed the effect of the refrigerant selection, condenser, and evaporator temperature on thermal efficiency, net-work output, second law efficiency, and exergy destruction values obtained with an advanced approach to exergy analysis. The thermal source was considered a low-temperature geothermal resource at 90℃. R11, R123, and R245ca were used as working fluid. The evaporator and condenser temperatures were investigated with three different values: 76, 80, 84℃, and 26, 31, 36℃, respectively. Firstly, the L27 orthogonal array was created, and then the Taguchi method was applied to objectives. The ranking order of parameters and optimum cases were obtained by calculating signal-to-noise ratios. Afterward, the ANOVA method was used, and the impact ratio of parameters was obtained. Because of the diverse nature of objectives, contribution ratios of parameters got different values. The contribution ratio results showed that working fluid is the most important and dominant parameter for net work output (95.1%) and endogenous (97%), avoidable (97.6%), and unavoidable (95%) exergy destructions. Alternatively, the condenser temperature is the most important parameter for thermal efficiency (66.6%), second law efficiency (66.6%), and exogenous exergy destruction (62.2%). The results showed the rank order of the parameters and the contribution ratio values are largely compatible.