ENES 232 Study Guide - Final Guide: Rankine Cycle, Jet Propulsion, Isentropic Process

• School: University of Maryland
• Department: Engineering Science
• Course: ENES 232
• Professor: Hines

Document Summary

System: quantity of matter (constant mass) or region in space (constant volume) chosen for study. Closed system: can exchange energy but not mass; mass is constant (control mass. Open system: can exchange both energy and mass, and is often a fixed volume (control mass) Surroundings: region outside the system or not included in the system. Boundary: surface or interface between the system and surroundings, and may be real or imaginary; does not have to be a physical barrier. The concept of a boundary in thermodynamics is very important when considering heat and work, as both must cross a boundary. State: condition of a system described by giving values to its properties at a given time. Property: a quantity used to describe a system. Properties can be related to each other through equations (equation of state), diagrammatically (property diagrams), or through tables (property tables).