Adrian Bejan I Imperfection, from Design in Nature
In this video, Adrian Bejan discusses the concept of imperfection in design, particularly in thermodynamics, fluid mechanics, and heat transfer. Unlike the ideal Carnot engine, he explains how all real engines are inherently imperfect due to energy losses. Bejan highlights that imperfection is the difference between the theoretical maximum work output and what is practically achievable. He also connects this concept to fluid dynamics, explaining how resistance in ducts and pipes leads to inefficiencies and heat transfer, where temperature gradients cause irreversible energy dissipation. Throughout the talk, Bejan emphasizes a holistic engineering approach, advocating for understanding systems as interconnected rather than isolated components.