This lecture introduces the fundamentals of thermodynamics, focusing on energy conversion systems. The instructor outlines the course objectives, emphasizing the importance of understanding and analyzing energy processes. Key topics include the first and second laws of thermodynamics, heat to work conversion, and the Carnot cycle. The instructor explains the significance of internal energy, enthalpy, and the role of state functions in energy systems. The lecture also covers the concept of exergy and its application in evaluating real systems. The organization of the course is discussed, highlighting the integration of technical aspects with systems modeling and lifecycle assessment. The instructor encourages students to develop critical evaluation skills for energy technologies, preparing them for practical applications in engineering. The lecture concludes with an overview of the assessment structure, including a midterm exam and a group project focused on technology evaluation, reinforcing the practical application of thermodynamic principles in real-world scenarios.