Comparison of energy consumption of various drying machine

Direct drying method

The method makes the hot air directly contacted with material, heating and at the same time moisture removal, in this kind of hot-air heating convection drying machine the key is to improve the material and hot air contact。This method is of high drying speed, low equipment cost, but need drying medium as a heat carrier, its thermal efficiency is low, the unit energy consumption is larger.

Air drying

The method enables the plate or forming structures on the outer surface or volume machine surface contacts the hot air, drying speed is slow, but a wide range of applications.

Ventilation drying

Drying machine makes the hot air through the powder, slice, block material layer.

Boiling drying

Hot air evenly from the powder, sheet material layers bottom blow into and make it flow, so that the material bed in a boiling state. In the fluidized bed heat transfer, mass transfer rates are relatively large, fluidized bed dryer drying speed is very fast, its thermal efficiency is higher than the convective heating drying . Unit energy consumption of small.

Vibration drying

Vibration dryer drying speed is slower than the flow layer drying , but with higher thermal efficiency