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Breadboard CO2 and humidity control systemA regenerable CO2 and humidity control system is being developed for potential use on shuttle as an alternate to the baseline lithium hydroxide (LiOH)/condensing heat exchanger system. The system utilizes a sorbent material, designated HS-C, to adsorb CO2 and water vapor from the cabin atmosphere. The material is regenerated by exposing it to space vacuum. A half-size breadboard system, utilizing a flight representative HS-C canister, was designed, built, and performance tested to shuttle requirements for total CO2 and total humidity removal. The use of a new chemical matrix material allowed significant optimization of the system design by packing the HS-C chemical into the core of a heat exchanger which is manifolded to form two separate and distinct beds. Breadboard system performance was proven by parametric testing and simulated mission testing over the full range of shuttle crew sizes and metabolic loadings. Vacuum desorption testing demonstrated considerable savings in previously projected shuttle vacuum duct sizing.
Document ID
19770008136
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Boehm, A. M. (Hamilton Standard Windsor Locks, CT, United States)
Date Acquired
September 3, 2013
Publication Date
October 1, 1976
Subject Category
Space Transportation
Report/Patent Number
SVHSER-7103
NASA-CR-151146
Accession Number
77N15079
Funding Number(s)
CONTRACT_GRANT: NAS9-13624
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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