Thermoeconomic Analysis of High-Temperature Kalina Cycle Integrated with Solar Power Plant

This study presents a comprehensive thermodynamic and thermoeconomic analysis of a high-temperature Kalina cycle integrated with a central receiver solar power plant. Four advanced Kalina configurations (KC۱۲, KC۱۲۳, KC۲۳۴, KC۱۲۳۴) were modeled and evaluated under high-pressure (up to ۱۴۰ bar) and high-temperature (up to ۵۰۰°C) operating conditions. A molten salt thermal storage system with ۷-hour capacity was incorporated to mitigate solar intermittency and enhance operational continuity. Thermodynamic modeling was validated against established literature with less than ۱% deviation, while thermoeconomic performance was assessed using component-specific cost models and sensitivity analyses. Results indicate that the KC۱۲۳۴ configuration yields the highest cycle efficiency (۳۱.۴۵%) and demonstrates favorable cost-effectiveness under optimal conditions. Increasing thermal storage duration lowers the levelized cost of electricity (LCOE) by up to ۸%, despite higher capital investment. Additionally, higher storage tank temperatures and turbine inlet pressures improve thermal and economic performance but are limited by material and fluid constraints. This work provides design insights for efficient and economically viable deployment of solar-driven Kalina systems in high-irradiance regions.

کلیدواژه ها:

High-Temperature Kalina Cycle ، Central Receiver Solar Power Plant ، Thermoeconomic Analysis ، Thermal Energy Storage ، Ammonia-Water Mixture