SpecificFlux = F l u x × T C F N D P {\displaystyle \operatorname {SpecificFlux} ={\frac {Flux\times TCF}{NDP}}}
Where: TCF = e x {\displaystyle \operatorname {TCF} =e^{x}}
x = u ( 1 T + 273 − 1 298 ) {\displaystyle x=u\left({\frac {1}{T+273}}-{\frac {1}{298}}\right)}
NDP = Net Driving Pressure
N D P = P f e e d − Δ π − Δ P n + 1 − P p e r m e a t e {\displaystyle NDP=P_{feed}-\Delta \pi -{\frac {\Delta P}{n+1}}-P_{permeate}}
P f e e d = {\displaystyle P_{feed}=} RO feed pressure
Δ π = {\displaystyle \Delta \pi =} Osmotic Pressure
Δ P = {\displaystyle \Delta P=} Feed/Brine Differential Pressure
n + 1 = {\displaystyle n+1=} Number of membrane stages
P p e r m e a t e = {\displaystyle P_{permeate}=} Permeate back pressure
RO feed pressure
Osmotic Pressure
Feed/Brine Differential Pressure
Number of membrane stages
Permeate back pressure
