[abstract] PASSIVE USE OF POTASSIUM SUPEROXIDE (K02) FOR EMERGENCY LIFE SUPPORT IN MANNED UNDERSEA VEHICLES AND SYSTEMS.

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[abstract] PASSIVE USE OF POTASSIUM SUPEROXIDE (K02) FOR EMERGENCY LIFE SUPPORT IN MANNED UNDERSEA VEHICLES AND SYSTEMS.

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Title: [abstract] PASSIVE USE OF POTASSIUM SUPEROXIDE (K02) FOR EMERGENCY LIFE SUPPORT IN MANNED UNDERSEA VEHICLES AND SYSTEMS.
Author: Schmidt, TC
Abstract: An emergency life support system should not require electrical power to operate and in a non-contaminated environment should also avoid the encumberances associated with the wearing of facemasks t etc. The objective was to investigate the use of K02 is a truly passive mode using panels that are simply exposed to the atmosphere when needed. K02 reacts with H20 (viz.humidity) to form 02 and KOH t and the KOH reacts with C02 toformeitherl<2C03 and H20 t or KHC03; a hygroscopic catalyst may also sometimes be used. The relative amounts of 02 produced and C02 absorbed is dependent on the chemical temperature and the ratio of C02/H20. A screen mesh test panel measuring 12x12x 1/2 inch was constructed and filled with K02 as required. The panel was placed inside a 28 ft3 chamber which was metabolically simulated and environmentally controlled in a fashion which precluded artificial gas movement t i.e. t other than that occurring due to natural convection and diffusion. Performance comparisons were made of catalyzed and uncatalyzed K02 in the horizontal and vertical panel positions over an 8 hour period.Although each combination of K02 type and panel position resulted in a not linear decrease in reaction rates with time t the most uniform (i.e., time constant) rates were produced by the uncatalyzed K02 in the vertical panel position. Using this configuration t additional 8 hour test runs were made at varying temperature and humidity levels. The data obtained yielded performance curves relating 02 production rate as a function of time and dew point temperature t and C02 absorption rate as a function of time and dry bulb temperature t for any time variant combination of temperature and humidity over an 8 hour period. A breadboard prototype system was constructed and successfully man tested, the results of which also corroborated the validity of the previously obtained performance curves.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting held May 29-June 2, 1984. The Gunter Hotel, San Antonio, Texas (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/5390
Date: 1984

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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