Energy Equipment and Systems

Energy Equipment and Systems

Performance analysis of solar assisted thermal power cycle in integration with thermal storage systems

Document Type : Research Paper

Authors
1 JSS Academy of Technical Education, Noida
2 Amity University Uttar Pradesh, Noida
10.22059/ees.2025.2055072.1507
Abstract
The Thermal power plants are facing issues such as depletion of fuel, emission of CO2, handling of ash etc. The integration of concentrated solar (CS) system with the existing power cycle is the way to minimize these issues. The CSPP have the issue of energy differential between its demand and the intermittent availability of solar energy. The integration of Thermal Energy Storage (TES) with these plants can tackle the issues associated with it like intermittency, process in-flexibility and poor energy efficiency. In the present work a 210 MW thermal power plant is integrated with LFR solar system with different thermal storage system. A MATLAB code is used as a simulation tool to analyse the performance of the solar integrated thermal cycle with two tank and cascade thermal storage. The HTF plays crucial role and different HTF’s have been considered in the present work. The impact of HTFs on the different parameters such as outlet temperature of heat transfer fluids in charging/discharging process, thermal efficiency of storage system and total heat stored in system during charging has also been analysed. Stored energy is high in cascade TES and that is 77.43 MW while with oil as HTF is 66.53 MW and two tank TES is 58.1 MW. The efficiency of TES with molten salt is 4.7% higher than oil. Improvement in performance parameters such as Fuel saving, Coal consumption rate, deemed saving of thermal energy and Efficiency with cascade storage system is higher than two tank TES system.
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