%theoretical() - calculates the theoretical h (tube and annulus sides), % the theoretical outlet temperatures and the % theoretical heat transfer for a concentric tube heat exchanger % (adiabatic) % % syntax: [h_h, h_c, cr, ntu, ua, ep, q_t, dt_h, dt_c, tho_t, tco_t]=theoretical

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?

When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?