RO Sizing Calculator – Liquid
Calculate orifice diameter for reverse osmosis systems based on flow rate, pressure drop, pipe dimensions, and fluid properties
Note: Yellow fields are inputs. All calculations update automatically.
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Input Parameters
kg/hr
bar
mm
mm
–
kg/m³
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Calculation Results
Diameter Ratio (d/D)
0.30
Orifice Diameter (Calculated)
7.2mm
Volumetric Flow Rate
1.0m³/h
Pressure Drop
0.62bar
Calculation Formula
d = √[(4 × Q) / (C × π × √(2 × ΔP / ρ))]
Where:
- d = Orifice diameter (m)
- Q = Volumetric flow rate (m³/s)
- C = Discharge coefficient
- ΔP = Pressure drop (Pa)
- ρ = Density (kg/m³)