Work is defined as positive when it is done by the system on the surroundings. Work, W Energy that flows in response to any driving force other a temperature difference, such as a force, a torque or a voltage. Q as POSITIVE if heat flows to system from surroundings. Heat & Work 2 forms of energy transfer between a system & its surroundings in a CLOSED system Heat, Q Energy that flows as a result of temperature difference between a system and its surroundings. Potential Energy Formula Ep = Mass x Free Fall Acceleration x Height Ep = mgz Where m = Mass (kg/g/Ibm ) g = Acceleration of gravity(9.81 m/s2) z = Height above a reference plane Units Joules (J) by an object / (J/s) fluid.ĥ Energy can be transferred as heat (Q)/work (W) Unit: U(J) or Ů (J/s)ģ Kinetic Energy Definition Energy of a moving object due to its motionįormula Ek = ½ mu2 Where m = Mass (kg/g/Ibm) u = Uniform velocity (m/s) Units Joules (J) by an object / (J/s) fluid.Ĥ Ep = Mass x Free Fall Acceleration x Height Unit: Ep (J) or ĖP (J/s) Internal energy (U) Sum of rotational, vibrational, and electromagnetic energies of individual molecules, atoms & subatomic particles moving around in a body of material or a flowing stream. Unit: Ek (J) or ĖK (J/s) Potential energy (Ep) Due to position in a gravitational or electromagnetic potential field or due to height of center of mass of object above a reference height. Form of Energy The First Law of Thermodynamics Energy neither be created nor destroyed 3 components of total energy of a system Kinetic energy (Ek) Energy due to motion of an object or flowing stream relative to the surface of the earth. Presentation on theme: "Energy Balances on Non-Reactive Processes"- Presentation transcript:ġ Energy Balances on Non-Reactive Processesįorms of Energy Energy Balances on Closed Systems Energy Balances on Open Systems at Steady State Elements of Energy Balance Calculations Changes in Pressure and Temperature Phase Change OperationsĢ 1.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |