Читать книгу Fundamentals of Heat Engines - Jamil Ghojel - Страница 50

This law is a statement of the law of conservation of energy: when a system undergoes a thermodynamic cycle, the net heat exchange ∑Q between the system and its surroundings plus the net work exchange ∑W between the system and the surroundings is equal to zero. This implies that energy can neither be created nor destroyed in a system; it can only be converted from one form to another:

Considered here are applications of the first law in two engineering energy systems: non‐flow system and steady‐flow system.