MECH 237 Chapter 2: Energy, Energy Transfer and Energy Analysis

• School: CSU
• Department: Mechanical Engineering
• Course: MECH 237
• Professor: Daniel B.Olsen

Document Summary

When velocity is constant ke can be expressed as: Ke = m (kj: or, on a unit mass basis: ke = (kj/kg) (where v denotes the velocity of the system relative to the reference frame, kinetic energy of a rotating solid body: Iw2 (where i is the moment of inertia of the body and w is the angular velocity: potential energy: energy a system possesses as a result of its elevation in a gravitational field. In the absence of these effect the total energy of the system consists only of kinetic, potential and internal energy. E = u + ke + pe = u + m. + mgz (kj: or, on a unit mass basis: e = u + ke + pe = u + Related to the volume flow rate: volume flow rate: () the volume of a fluid flowing through a cross section per unit time.