ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
SUPPORTING INFORMATION
REVERSE OSMOSIS % CLEAN CALCULATION
Example
The following data from the Operational Data Log is recorded:
Feed TDS (mg/l): 35,800
RO Feed Pressure (psig): 780
Product Flow (gpm): 20.5
Feed Temperature (0F): 80
From table 1, Factor A = 205
From Table 2 Factor B = 2.55
From Table 3, Factor TCF = 1.05
Factor AB = 523
NDP = 780 45 523 = 212
C = 212 x 1.05 = 223
P(TWPS) = 20.5/223 = 0.092
P = 0.1628 523/10000 = 0.11
% Clean = 100 x 0.092/0.11 = 83.6%
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