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Preprototype SAWD subsystemA regenerable, three man preprototype solid amine, water desorbed (SAWD) CO2 removal and concentation subsystem was designed, fabricated, and successfully acceptance tested by Hamilton Standard. The preprototype SAWD incorporates a single solid amine canister to perform the CO2 removal function, an accumulator to provide the CO2 storage and delivery function, and a microprocessor which automatically controls the subsystem sequential operation and performance. The SAWD subsystem was configured to have a CO2 removal and CO2 delivery capability at the rate of 0.12 kg/hr (0.264 lb/hr) over the relative humidity range of 35 to 70%. The controller was developed to provide fully automatic control over the relative humidity range via custom software that was generated specifically for the SAWD subsystem. The preprototype SAWD subsystem demonstrated a total of 281 hours (208) cycles of operation during ten acceptance tests that were conducted over the 3 to 70% relative humidity range. This operation was comprised of 178 hours (128 cycles) in the CO2 overboard mode and 103 hours (80 cycles) in the CO2 reduction mode. The average CO2 removal/delivery rate met or exceeded the design specification rate of 0.12 kg/hr (0.254 lb/hr) for all ten of the acceptance tests.
Document ID
19840012109
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Nalette, T. A. (Hamilton Standard Windsor Locks, CT, United States)
Date Acquired
September 4, 2013
Publication Date
February 1, 1984
Subject Category
Man/System Technology And Life Support
Report/Patent Number
NAS 1.26:171760
SVHSER-8921
NASA-CR-171760
Accession Number
84N20177
Funding Number(s)
CONTRACT_GRANT: NAS9-13624
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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