SYSTEM PERFORMANCE
11
Rev C
Figure 8
Flow Information
Approximate flow rates from the Merlin system are shown for certain net
driving pressure and temperature conditions in Table 1. Data shown is
based on water containing 750 ppm NaCl. Losses because of osmonic
pressure are included in the Table 1 data. No further adjustment needs to
be made to account for osmonic pressure losses when using 750 ppm
NaCl feed water.
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
16
14
12
10
8
6
4
2
0
Inlet Flow Rate (gpm)
F
a
ucet Pressure Drop (psi)
1.10
.97
.83
.69
.55
.41
.27
.14
0
.75 1.13 1.51 1.89 2.29 2.65 3.03 3.41 3.78
Inlet Flow Rate (Lpm)
F
a
ucet Pressure Drop (bar)
Estimated Faucet Pressure Drop For Water Between 40 - 100˚F (4.5 - 38˚C)
EXAMPLE:
Q:
A Merlin will be installed with the estimated flow into a faucet at 0.4
gpm (0.27 Lpm). Find the faucet pressure drop.
A:
According to Figure 8, the faucet pressure drop will be 3.8 psi (0.26
bar).
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