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vapor compression distillation moduleA Vapor Compression Distillation (VCD) module was developed and evaluated as part of a Space Station Prototype (SSP) environmental control and life support system. The VCD module includes the waste tankage, pumps, post-treatment cells, automatic controls and fault detection instrumentation. Development problems were encountered with two components: the liquid pumps, and the waste tank and quantity gauge. Peristaltic pumps were selected instead of gear pumps, and a sub-program of materials and design optimization was undertaken leading to a projected life greater than 10,000 hours of continuous operation. A bladder tank was designed and built to contain the waste liquids and deliver it to the processor. A detrimental pressure pattern imposed upon the bladder by a force-operated quantity gauge was corrected by rearranging the force application, and design goals were achieved. System testing has demonstrated that all performance goals have been fulfilled.
Document ID
19750023674
Document Type
Contractor Report (CR)
Authors
Nuccio, P. P.
(Chemtric, Inc. Rosemont, IL, United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1975
Subject Category
MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
Report/Patent Number
REPT-3110
NASA-CR-144424
Funding Number(s)
CONTRACT_GRANT: NAS9-13714
CONTRACT_GRANT: NAS9-14234
CONTRACT_GRANT: NAS9-10273
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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