OED-Vol. 10

THE

CHARACTERIZATION of

CARBON DIOXIDE

ABSORBING AGENTS for

LIFE SUPPORT EQUIPMENT

presented at

THE WINTER ANNUAL MEETING OF THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS PHOENIX, ARIZONA NOVEMBER 14-19, 1982

sponsored by

THE OCEAN ENGINEERING DIVISION, ASME THE BIOENGINEERING DIVISION, ASME

edited by

MARSHALL L. NUCKOLS NAVAL COASTAL SYSTEMS CENTER

KAREN A. SMITH NAVAL COASTAL SYSTEMS CENTER

UB/TIB Hannover 89 103 000 704

RN 489710)

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

United Engineering Center 345 East 47th Street New York, N. Y. 1 001 7 W1* v(RM' (40)y I CONTENTS

OVERVIEW OF ABSORPTION METHODS

Carbon Dioxide Scrubbing Materials in Life Support Equipment T. C. Wang'. 1 Review of Potassium Superoxide Characteristics and Applications J. W. Mausteller. 23 Air Revitalization Compounds: A Literature Survey J. O StullandM. G. White. 33

LABORATORY INVESTIGATIONS

Chemical and Physical Factors Affecting the Absorption Capability of Calcium Hydroxide Based Carbon Dioxide Absorbents D. E. Veinot, A. Y. MacLean, C. D. MacGregor 47 Carbon Dioxide Absorption Characteristics of Hydrated Calcium Hydroxide with Metal Hydroxide Activators A. Purer, G. A. Deason, M. L. Nuckols. 57

The Effect of Pressure on the Efficiency of Carbon Dioxide Absorbents C. D. MacGregor and M. G. Fraser 75 Carbon Dioxide Absorption Dynamics of Lithium Hydroxide D. A. Boryta and A. J. Maas 83 Airflow and Pressure Drop in Hyperbaric Baralyme Beds P. S. RiegelandD. W. Caudy 103

EQUIPMENT EVALUATIONS

Performance of a Carbon Dioxide Scrubber System for Diver Decompression Chambers D. W. McClain andS. F. Segrest 111 Preliminary Study on Carbon Dioxide, Temperature and Humidity Profiles in a Manned Submersible T. C. WangandR. Lenahan 125 MK 11 and MK 12 C02 Scrubber Development R. Dowgul 139 Lithium Hydroxide as a CO2 Scrubber in Closed Circuit Breathing Apparatus E. E. Buban and J. R. Haughey 151

MODELING

A Theoretical Model of CO2 Absorption in a Mixed Alkali Bed Under Hyperbaric Conditions J. CuelterandE. H. Wissler 157 Model for the Absorption Rate of Gaseous C02 by Solid Hydroxides D. B. Houston, T. L. Bailey, P. Kumar 167 Absorption of Carbon Dioxide by Solid Hydroxide Sorbent Beds in Closed Loop Atmospheric Revitalization Systems S. H. Davis, Jr. and L. D. Kissinger 179 Applications of Permeable Membranes as Carbon Dioxide Scrubbers A. J. Sarich 197

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