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In the current design, we have two circular orifices on the same pipe segment. Originally, the micro-mixing orifice was after the first pipe bend. However we have decided to change that to allow facility of removal when cleaning is required. The micro-mixing orifice is two pipe diameters below the macro-mixing orifice. This ensures adequate mixing time for macro-mixing to take effect. The orifices for both equations are sized using the equations of minor loss coefficient for a submerged orifice.
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\[{K_{eorifice}} = \left( {\frac{{{d_{pipe}}\^2}}{{{K_{vc{}}}{d_{or}}^2}} - 1} \right)\] |
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