Journal article 851 views 138 downloads
The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
J. Dingley,
D. Williams,
P. Douglas,
M. Douglas,
J. O. Douglas,
Peter Douglas 
,
John Dingley
,
John Dingley
Anaesthesia
Swansea University Authors:
Peter Douglas , John Dingley
-
PDF | Accepted Manuscript
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DOI (Published version): 10.1111/anae.13595
Abstract
The objective was to develop a sodium percarbonate/water/catalyst chemical oxygen generator not using compressed gas. Existing devices utilising this reaction have a very short duration. Preliminary experiments with a glass reaction vessel, water bath and electronic flowmeter indicated many factors...
| Published in: | Anaesthesia |
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| ISSN: | 00032409 |
| Published: |
2016
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa29032 |
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| Abstract: |
The objective was to develop a sodium percarbonate/water/catalyst chemical oxygen generator not using compressed gas. Existing devices utilising this reaction have a very short duration. Preliminary experiments with a glass reaction vessel, water bath and electronic flowmeter indicated many factors affected oxygen production rate including reagent formulation, temperature, water volume and agitation frequency. Via full scale experiments using a stainless steel vessel, an optimum combination of reagents was found to be 1 l water, 0.75 g manganese dioxide catalyst, 60 g sodium percarbonate granules and 800 g of custom pressed 7.21 (0.28) g sodium percarbonate tablets. This combination of granules and slower dissolution tablets produced a rapid initial oxygen flow to “purge” an attached low flow breathing system allowing immediate use, followed by a constant flow meeting metabolic requirements for a minimum of 1 h duration. |
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| Keywords: |
Emergency Care, prehospital; Inhalation Therapy, oxygen; Equipment, design. |
| College: |
Faculty of Medicine, Health and Life Sciences |