Space Grant Consortium - University of Wisconsin - Green Bay

Throughout each of the run cycles, hourly processing parameters were observed and recorded in order to ensure
proper processing conditions. These data include values for product and solution masses, as well as
temperature, pressure, and current at specific access points in the assembly. See Figures 2 and 3 for Solution 1
and Solution 2 for data respectively. Note the only main difference between the two Solution systems, besides
that of normal fluctuations, is the TM01 and Prod. This directly correlates to the larger input mass of
wastewater due to hygiene waste incorporation of Solution 2.
(a) (b)
(c) (d)
Figure 2: VCD Data trends taken daily for Solution 1 taken 6/15/2009. 12.7 lb urine, 17.2 lb condensate. (a) I1=
Current (Amps); P16=Centrifuge pressure absolute (psi); P1=Delta pressure (psi); (b) P5=Housing pressure of Fluid
Control Pump Assembly (psi); K1=Conductivity of product fluid (µohms); (c) TM01=Mass in feed tank (lbs);
Prod=Mass of product (lbs); (d) T1=Temp inside centrifuge (°F); SE=Specific Energy (Watt-lbs/hr).
(a) (b)
40