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To calculate the pressure drop and transmembrane pressure, please refer to the below equations.
Pressure drop:
Transmembrane (operating) pressure:
The energy consumption of a cross-flow microfiltration system is determined mainly by the circulating volume and the pressure
losses of the module. The pressure loss is affected by:
•
The properties of the circulating fluid (e.g. rheological behavior, viscosity, and the concentration of suspended particles)
•
The velocity resistance in circulation (modules, fittings, piping system)
•
Operating conditions (flow velocity)
The greatest resistance to velocity in circulation occurs when the modules are operated in parallel or in series. Figure 6 shows the
relationship between pressure drop and the mean linear velocity of water through MICRODYN capillary modules at 20°C.
Figure 6. Relationship between pressure drop and velocity of water at 20°C measured in a MD 150 CP 2N.
MICRODYN CAPILLARY MODULES | USER MANUAL
MANN+HUMMEL Water & Fluid Solutions | REVISION DATE: 09/09/2021
∆P = P
− P
1
2
P
− P
P
=
− P
1
2t
2
TMP
F
10
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