CARBON DIOXIDE ABSORPTION SYSTEMS FOR SCUBA. 1. QUANTITATIVE CONSIDERATIONS OF DESIGN AND PERFORMANCE OF CYLINDRICAL CANISTERS.

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CARBON DIOXIDE ABSORPTION SYSTEMS FOR SCUBA. 1. QUANTITATIVE CONSIDERATIONS OF DESIGN AND PERFORMANCE OF CYLINDRICAL CANISTERS.

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Title: CARBON DIOXIDE ABSORPTION SYSTEMS FOR SCUBA. 1. QUANTITATIVE CONSIDERATIONS OF DESIGN AND PERFORMANCE OF CYLINDRICAL CANISTERS.
Author: Goodman, MW
Abstract: Cylindrical SCUBA canisters, packed with granular Baralyme, were tested with a mechanical respirator. Breathing resistance was observed to vary linearly and in direct proportion to the length-diameter ratio when airflow was of less than critical or pre-critical magnitude. Duration of useful canister life (end-point at 0.5percent CO2) was determined to be a function of canister size, i.e., volume and quantity of absorbent. Efficiency, however, correlates closely with the packed granular column length of iso-diameter, adequate-size canisters. Dimensions of low-flow-impedance, minimal-capacity canisters are governed by the absorptive wave-reactive-zone volume and the empirically-stipulated diameter. Methods for determining size, capacity and dimensional ratios of low resistance, efficient, duration-specific canisters are considered, together with the gas flow and composition parameters, the specific environmental hazards facing closedcircuit oxygen swimmers, and related factors of significance in these respects. (Author)
Description: Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: None; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.
URI: http://archive.rubicon-foundation.org/3340
Date: 1964

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