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Final report on life testing of the vapor compression distillation/urine processing assembly (VCD/UPA) at the Marshall Space Flight Center (1993 to 1997) / P. Wieland [and three others].
Connect to full text Available online
View online- Format:
- Book
- Government document
- Author/Creator:
- Wieland, P. O. (Paul O.), author.
- Series:
- NASA technical memorandum ; 1998-208539.
- NASA/TM ; 1998-208539
- Language:
- English
- Subjects (All):
- Distillation.
- Sewage.
- Urine.
- distillation.
- urine.
- Medical Subjects:
- Sewage.
- Urine.
- Genre:
- Online resources.
- Physical Description:
- 1 online resource (ix, 64 pages) : color illustrations.
- Place of Publication:
- Marshall Space Flight Center, Alabama : National Aeronautics and Space Administration, Marshall Space Flight Center, August 1998.
- Summary:
- Wastewater and urine generated on the International Space Station will be processed to recover pure water using vapor compression distillation (VCD). To verify the long-term reliability and performance of the VCD Urine Processor Assembly (UPA), life testing was performed at the Marshall Space Flight Center (MSFC) from January 1993 to April 1996. Two UPA's, the VCD-5 and VCD-5A, were tested for 204 days and 665 days, respectively. The compressor gears and the distillation centrifuge drive belt were found to have operating lives of approximately 4,800 hours, equivalent to 3.9 years of operation on ISS for a crew of three at an average processing rate of 1.76 kg/h (3.87 lb/h). Precise alignment of the flex-splines of the fluids and purge pump motor drives is essential to avoid premature failure after about 400 hours of operation. Results indicate that, with some design and procedural modifications and suitable quality control, the required performance and operational life can be met with the VCD/UPA
- Notes:
- "August 1998."
- "Performing organization: George C. Marshall Space Flight Center"-- Report documentation page.
- Includes bibliographical references (pages 62-64).
- Description based on online resource; title from PDF title page (NASA, viewed June 20, 2017).
- Publicly Available
- Unlimited
- Other Format:
- Microfiche version: Final report on life testing of the vapor compression distillation/urine processing assembly (VCD/UPA) at the Marshall Space Flight Center (1993 to 1997)
- OCLC:
- 703645925
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