Topics: pumping energy, power ideal case, Compressible Flow of Gases, Molecular Flow, Non-Newtonian Fluids, Packed Beds, Fluidized Beds, Heat Exchange, Conduction, Convection, Radiation, Heat Transfer Resistances, Unsteady-State Heating, Cooling of Solid Objects, Heat Exchangers, Recuperators, Fluidized Bed Exchangers, Heat Regenerators