| Dynamic Canned motors
are provided with Reverse circulation line so that the pumped liquid do not vapourize
at any of the bearing in the pumps. The increase in the vapour pressure of the
liquid due to the heat input while flowing between the stator & rotor is well
covered by the increase in its pressure increase. Vapour pressure, specific heat
and viscosity of the liquid for e.g. carbon dioxide, Butane, Ammonia, Propane
ethane have steeper and higher vapour pressure curve & low specific heat,
Reverse circulation line in the pump resolve all the above problems. |  |