MVP Heat Balance Diagram The Reason to Use MVP: Low energy consumption per unit Gentle evaporation due to low temperature Short retention time due to the frequently used single effect Simple process and high practicability Excellent service performance at some loads Low operating costs Design and Functions Vapor compressor currently sued for MVP technology has two forms:the positive displacement type and the centrifugal type(i.e.speed type). Advantages of MVP Falling-film Evaporator 1.Short retention time,no aroused degradation of heat sensitive materials; 2.Bigger het transfer coefficient during evaporation due to the film like contour and faster fluid flow-rate; 3.Small pressure drop and therefore nearly constant pressure and temperature at the heat exchange side,requiring almost no or only minimal sensible heat; 4.An even lower difference in temperature is allowed as the process stream flows only under the gravity rather than under temperature difference ; 5.Less retentate in the plant;
6.Convection boiling, subject to little effect of the tube surface state on the boiling process
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