MICRODYN CAPILLARY MODULES | USER MANUAL
MANN+HUMMEL Water & Fluid Solutions | REVISION DATE: 09/09/2021
10
To calculate the pressure drop and transmembrane pressure, please refer to the below equations.
Pressure drop:
∆
P = P
1
−
P
2
Transmembrane (operating) pressure:
P
TMP
=
P
1
−
P
2t
2
−
P
F
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.
