By traveling through a bass tube, 2.5 cm O.D. and 2.2 cm I.D., which is surrounded by steam at 55 kPa and 90% quality, 9.4 kg/s of water is heated from 15oC to 60oC. Assume the inside unit convective coefficient is 2000 W/m2-K, and the outside unit convective coefficient is 7950 W/m2-K. Determine (a) the length of tube required; (b) the steam supply in kg/h if no subcooling occurs.

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.