Energy nozzle array

For the design of the nozzle array the energy consumption needed for drying is essential. This is the energy for heating the air ... 

For hole channels, analogous results are valid, and a pitch of t = 6d is again recommended. A larger pitch will result in a decrease in the heat transfer, which will remain constant with lower pitches however, the number of nozzles and thus the flow rate, will be increased. The specific energy consumption and the required gas temperatures are slightly higher for hole channels than for single-nozzle arrays, because the heat transfer is somewhat lower. 

Micro-jet arrays are usually associated with lower energy consumption rates than sprays generated by the special (HAGO) nozzle for the same flow rate. The liquid was pushed through a 0.5 mm stainless steel orifice plate to form the jets. The holes in the plate were laser drilled and were arranged in a circular pattern giving a radial... 

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