Thermodynamic analysis of solar-driven ammonia-water cycles for power and cooling applications

This study investigates the thermodynamic performance of an ammonia-water hybrid power and cooling cycle driven by solar energy, focusing on optimizing energy and exergy efficiencies through key parameters such as ammonia concentration, superheater temperature difference, and pressure ratio. Using a detailed energy and exergy analysis, the effects of these parameters on system efficiency are evaluated. Results show that higher ammonia concentrations decrease efficiencies up to a specific threshold. Additionally, increasing the superheater temperature difference positively impacts both energy and exergy efficiencies, suggesting improved utilization of thermal energy in the system. The pressure ratio also plays a significant role, with an optimal range around ۱۴, where both energy and exergy efficiencies peak before dropping at higher ratios due to thermodynamic limitations. This research highlights the potential of optimizing ammonia-water cycles for sustainable energy applications, particularly in high solar irradiance regions, providing a pathway to more efficient and environmentally friendly energy systems.

کلیدواژه ها:

Ammonia-water cycle ، solar-driven systems ، power and cooling cycle ، solar collector