Thermodynamic investigation of a novel synergetic integration of solar-based Kalina cycle and ejector refrigeration cycle Online publication date: Mon, 09-Oct-2023
by Tawfiq Al-Mughanam; Abdul Khaliq
International Journal of Exergy (IJEX), Vol. 41, No. 4, 2023
Abstract: This study is aimed to investigate the solar operated combined cycle consisting of tower solar collector, Kalina cycle, and ejector refrigeration cycle (ERC). Mathematically formulated model and numerical simulation through CFD using ANSYS-FLUENT package are employed to ascertain the impact of coil diameter (dc) and oil entry temperature on pressure and temperature of solar heat transfer fluid (SHTF). For entry temperature of 98°C and dc = 400 mm, the maximum rise in temperature of oil touches 19.9% when global radiation (GR) is promoted from 850 to 1,200 W/m2. By the increase of expander entry temperature, refrigeration exergy decreases but the system exergy efficiency increases. Increasing ammonia-water basic solution concentration, exergy of refrigeration and power are increased but system efficiencies decreases. Exergy analysis indicates that solar collector entails maximum exergy loss followed by vapour generator. Results show that combined system performance is better than those of separate power and refrigeration systems.
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