Geothermal Energy Systems: Principles and Applications

This lecture covers the principles and applications of geothermal energy systems, focusing on thermodynamic cycles, heat pump systems, and various geothermal technologies. It begins with an introduction to thermodynamics, including the first and second laws, and their relevance to energy systems. The instructor discusses different types of geothermal systems, such as vapor-compression refrigeration and absorption heat pumps, explaining their operational principles and efficiency metrics. The lecture also highlights the importance of temperature gradients in geothermal applications and the potential for electricity generation from geothermal resources. Various geothermal power plants, including dry steam, flash steam, and binary cycle plants, are examined, along with their efficiencies and operational characteristics. The discussion extends to the classification of geothermal reservoirs and the factors influencing their performance. The lecture concludes with a summary of the current state of geothermal energy production worldwide, emphasizing its role as a sustainable energy source.