Renewable Energy Systems: Thermodynamics and Applications

This lecture covers the fundamentals of renewable energy systems, focusing on thermodynamic principles and their applications. It begins with an overview of thermodynamic basics, including the first and second laws of thermodynamics, and the concept of exergy. The instructor discusses various thermodynamic power cycles relevant to renewable energy, such as Rankine and Brayton cycles, and reviews heat pump and refrigeration cycles. The motivation for transitioning to renewable energy sources is highlighted through global power production statistics, emphasizing the need for efficient energy conversion systems. The lecture also explores traditional and advanced energy conversion systems, including combustion engines, heat pumps, and solar thermal technologies. Examples of coal plants with CO₂ capture and enhanced geothermal systems are presented to illustrate practical applications. The instructor explains the importance of energy efficiency and introduces cycle analysis for closed systems, discussing the implications of the second law of thermodynamics. The lecture concludes with a discussion on exergy and its significance in evaluating the performance of renewable energy systems.