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- We need to be able to adjust the total head loss through the entire plant to adjust for any extra head loss created in the plant. The easiest way to do this is to change the number of orifices in the Rapid Mix Plate: adding more orifices will reduce the total amount of head loss, and creating a plate with fewer orifices will increase the total head loss through the plant. The following two plots, created in MathCAD, show the variation of head loss with the number of orifices in the micro scale mixing plate for the given maximum Agalteca flow rate of 6.3 L/s and the target energy dissipation rate of 1 W/kg:
Figure 1. Plot of the Head Loss through the micro scale mixing plate against the number of orifices of 7/8" diameter drilled in the plate. As can be seen in the above plot, as the number of orifices in the plate increases, the head loss decreases, showing that increasing the number of orifices in the plate is an effective way of decreasing the head loss through the plate.
Figure 2. Plot of the Head Loss through the micro scale mixing plate against the number of orifices of 7/8" diameter drilled in the plate for a reduced range or number of orifices from 12 to 17, the range of numbers that would be feasible for the micro mixing plate in Agalteca. This plot shows the values of the head loss created through the plate for each number of orifices in the plate, as well as the range of head losses that would be observed in the Agalteca plant for each number of orifices.
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