Energy Transfer

More documents

Recommendations

Info

Energy Change of a System, Esystem• Energy change = Energy at final state –Energy at initial stateE system = E final – E initial = E 2 – E 1• Energy can exist in numerous forms such asinternal (sensible, latent, chemical andnuclear), kinetic, potential, electrical, andmagnetic and their sum constitutes the totalenergy E of a system. In the absence ofelectric, magnetic and surface tension effectsE = U + KE PEEnergy Transfer 32© Copyright 2005 Prof. Arun S. Mujumdar.
whereUm(u2 u1 2KE m( V2V2PE mg (z z )21)121)Systems that do not involve any changes in theirvelocity or elevation during a process are stationarysystems.Changes in kinetic and potential energies are zero(that is KE = PE = 0), and E = U for stationarysystems.Energy Transfer 33© Copyright 2005 Prof. Arun S. Mujumdar.
Page 1: ME2121 Engineering ThermodynamicsEN
Page 5 and 6: Heat and work are energy transfer m
Page 7 and 8: ENERGY TRANSFER BY WORK (Cont’d)
Page 9 and 10: • Path functions have inexact dif
Page 11 and 12: MECHANICAL FORMS OF WORK (cont’d)
Page 13 and 14: MOVING BOUNDARY WORK (cont’d)•
Page 15 and 16: MOVING BOUNDARY WORK (cont’d)•
Page 17 and 18: Boundary Work during a Constant-Vol
Page 19 and 20: Boundary Work for a Constant-Pressu
Page 21 and 22: Isothermal Compression of anIdeal G
Page 23 and 24: Gravitational Work• Gravitational
Page 25 and 26: dsV ds VdtdtWa21F ds2 dV m(V dt
Page 27 and 28: Then the shaft work is given by:W s
Page 29 and 30: Non-mechanical Forms of Work• Som
Page 31: Energy Balance:The net change (incr
Page 35 and 36: First Law: Statement• Heat input
Page 37 and 38: • An expression for the specific
Page 39 and 40: du = Cv(T) dT andHence,andudh = Cp
Page 41 and 42: The ideal gas specific heats of mon
Page 43 and 44: Conservation of Mass PrincipleSecti
Page 45 and 46: ExamplesFor incompressible fluid (n
Page 47 and 48: Total Energy of a Flowing Fluid•
Page 49 and 50: Closing Remarks - Chapter 3• This

Energy Transfer

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?