Abstract
A solar powered trigeneration system consisting of tower solar collector, Kalina cycle with the heat exchanger, and EARC is proposed to produce refrigeration below freezing, electricity, and process heat, simultaneously. Simulation through CFD using ANSYS-FLUENT package is conducted to examine the effect of coil diameter and inlet oil temperature on the pressure and temperature of SHTF. It is found that, for inlet temperature of 92oC and DNI 850 W/m2, the SHTF outlet temperature increases by 9% when the coil diameter increased from 150 to 400 mm. Trigeneration performance is analyzed after altering; hot oil outlet temperature, turbine entry pressure, and the concentration of ammonia-water basic solution to study their effect on power produced by turbine, refrigeration load, exergy of refrigeration, and efficiencies of trigeneration system. Increase in concentration of ammonia-water basic solution is leading towards the significant increase in the turbine power and the elevation of trigeneration system’s energy and exergy efficiencies. Bottoming of Kalina cycle with EARC shows the distribution of solar energy as; energetic output 72.31% and energy lost to environment 27.69%. The solar exergy supplied to the trigeneration system is distributed as; 16.23% exergy is produced, 1.62% is the exergy loss, and 82.15% is the exergy destroyed.