Performance Evaluation of a Hybrid Ammonia-Water and Transcritical CO₂ Combined Power Cycle for Enhanced Energy Efficiency

Performance Evaluation of a Hybrid Ammonia-Water and Transcritical CO₂ Combined Power Cycle for Enhanced Energy Efficiency

Abhay Kumar dubey1*, Dr.Mayank Maheshwari2, Dr.Amrit Anand Dosar3

1Research Scholar, Babu Banarasi Das University, Lucknow, India

2Associate professor, Allenhouse Institute of Technology, Kanpur, India

3Associate professor, Babu Banarasi Das University, Lucknow, India

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Abstract - The rising global energy demand and the need to cut carbon emissions call for more efficient and sustainable power generation technologies. Traditional thermal cycles like the Rankine cycle face energy losses, necessitating innovative configurations. This study examines a hybrid ammonia-water and transcritical CO₂ power cycle that leverages the strengths of both working fluids for better efficiency. The ammonia-water (Kalina) cycle enhances heat recovery with its variable boiling point, while the sCO₂ cycle offers superior thermal properties and lower compression work. By integrating these cycles, the system optimally utilizes waste heat, reduces energy losses, and boosts power output. A thermodynamic analysis assesses thermal efficiency, exergy destruction, and environmental benefits, with a focus on potential integration with solar and geothermal energy for enhanced sustainability. The results highlight the hybrid cycle's capability to improve energy conversion and minimize environmental impact.

Key Words:  Power Cycle, Combined Power Cycle , Thermodynamic Analysis , Energy Efficiency , Exergy Analysis , Waste Heat Utilization , Advanced Power Generation.