Advanced Modeling of Thermodynamic Energy Components and Systems presents intermediate-complexity models for energy system components. It addresses a critical gap in studying energy systems under off-design conditions, examining how systems behave when ambient temperature or load conditions change. Using Thermoptim software’s systemic approach, which graphically links component icons and encapsulates equations within modules, this book focuses on cycle architecture and component interactions rather than equation manipulation. It demonstrates how component technologies (dynamic versus positive displacement compressors, various heat exchanger types) fundamentally affect system behavior and provides tools to model these distinctions accurately. This book equips mechanical and energy engineering researchers, professionals and graduate students with methods bridging technological characteristics and thermodynamic models.