granulator energy saving

Granulator energy can be divided into two parts: one part is the driving force, one is heated portion.
Pellet mill of energy: they use a frequency converter, energy is through energy-saving motors I, for example, the actual motor power is 50Hz, and you actually need in the production of sufficient production 30Hz, those extra energy in vain wasted, the inverter is to change the power output of the motor to achieve energy saving effect.
Heating part of energy: heating part is mostly the use of electromagnetic energy saving heaters, energy-saving rate is about old-fashioned resistance circle 30% -70%.
1 compared to electric resistance heating, electromagnetic heater than a layer of insulation, thermal efficiency increases.
(2) compared to resistance heating,  oil refinery  heater directly on the heating tube, reducing heat loss heat transfer.
3 compared to the resistance heating, electromagnetic heating of the heater is faster than a quarter, reducing the heating time.
4 compared to the resistance heating, electromagnetic heating of the heater speed, high production efficiency is improved, so that the motor is saturated, it is reduced, resulting in high power low demand for power loss.
Fly above four points such as electromagnetic heaters, why can granulator saving up to 30% -70% of the causes.