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Results and Interpretation of the WFRD ELS Distillation Down-Select Test DataTesting of the Wiped-film Rotating-disk (WFRD) evaporator was conducted in support of the Exploration Life Support Distillation Down-Select Test. The WFRD was constructed at NASA Ames Research Center (ARC) and tested at NASA Marshall Space Flight Center (MSFC). The WFRD was delivered to MSFC in September 2009, and testing of solution #1 and solution #2 immediately following. Solution #1 was composed of humidity condensate and urine, including flush water and pretreatment chemicals. Solution #2 was composed of hygiene water, humidity condensate, and urine, including flush water and pretreatment chemicals. During the testing, the operational parameters of the WFRD were recorded and samples of the feed, brine, and product were collected and analyzed. The steady-state results of processing 414L of feed solution #1 and 1283L of feed solution #2 demonstrated that running the WFRD at a brine temperature of 50 C gave an average production rate of 16.7 L/hr. The specific energy consumption was 80.5W-hr/L. Data Analysis shows that the water recovery rates were 94% and 91%, respectively. The total mass of the WFRD as delivered to MSFC was 300 Kg. The volume of the tests stand rack was 1m width x 0.7m depth x 1.9m height or 1.5 cu m of which about half of the total volume is occupied by equipment. Chemical analysis of the distillate showed an average TOC of 20ppm, a pH of 3.5, and a conductivity of 98 mho/cm. The conductivity of the distillate, compared to the feed, decreased by 98.9%., the total ion concentration decreased by 99.6%, the total organics decreased 98.6%, and the metals were at or below detection limits
Document ID
20100027529
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Delzeit, Lance Dean
(NASA Ames Research Center Moffett Field, CA, United States)
Flynn, Michael
(NASA Ames Research Center Moffett Field, CA, United States)
Carter, Layne
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Long, David A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
March 31, 2010
Subject Category
Man/System Technology And Life Support
Report/Patent Number
ARC-E-DAA-TN1442
Meeting Information
Meeting: ICES 2010
Location: Barcelona
Country: Spain
Start Date: March 31, 2010
Sponsors: American Inst. of Aeronautics and Astronautics, Society of Automotive Engineers, Inc.
Funding Number(s)
WBS: WBS 439906.04.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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