CARBON DIOXIDE ABSORPTION SYSTEMS FOR SCUBA. 2. THEORY AND APPLICATIONS OF A NOVEL, NON-CYLINDRICAL LOW-RESISTANCE, C02 ABSORPTION CANISTER FOR SCUBA.

Rubicon Research Repository/Manakin Repository

CARBON DIOXIDE ABSORPTION SYSTEMS FOR SCUBA. 2. THEORY AND APPLICATIONS OF A NOVEL, NON-CYLINDRICAL LOW-RESISTANCE, C02 ABSORPTION CANISTER FOR SCUBA.

Show full item record


Title: CARBON DIOXIDE ABSORPTION SYSTEMS FOR SCUBA. 2. THEORY AND APPLICATIONS OF A NOVEL, NON-CYLINDRICAL LOW-RESISTANCE, C02 ABSORPTION CANISTER FOR SCUBA.
Author: Goodman, MW; James, TW
Abstract: Results of underwater swimming experiences, breathing-machine experiments, and recompressionchamber testing to eleven atmospheres absolute pressure (330 feet sea water) with new SCUBA carbon dioxide absorption canisters are reported. Granular Baralyme was employed as the chemical absorbing agent. Certain comparisons, both of design and functional history, with conventional cylindrical canister systems are emphasized and analyzed, and theory of the lowresistance device is discussed. As a three-dimensional geometric solid, the essential canister shape is that of a frustum of a rectangular pyramid. In the two-dimensional aspect of greatest surface the canister perimeter presents as a truncated isosceles trapezoid. Inlet and exhaust hose fittings are situated near the extremes of the larger rectangular base of the canister. The acronyms FLATCAN and Flatcanister denote Flat, Low resistance, carbon dioxide Absorption, Trapezoidal Canisters. Mean delta and resistance results for nine cylindrical canisters (16 mechanical respirator experiments) are about 90percent and 15percent higher, respectively, than the comparable mean data for seven FLATCAN prototypes (15 respirator experiments). A Reynolds number comparison, measured with a Fisher t test, was significant at the 0.01 confidence level. Size and dimensional parameters have been empirically related to duration of satisfactory carbon-dioxide elimination from SCUBA systems. (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/3341
Date: 1965

Files in this item

Files Size Format View
NEDU_1965_04.pdf 5.829Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Browse

My Account