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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 Orcid Logo, John Dingley

Anaesthesia

Swansea University Authors: Peter Douglas Orcid Logo, John Dingley

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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...

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Published in: Anaesthesia
ISSN: 00032409
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa29032
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first_indexed 2016-06-29T18:23:50Z
last_indexed 2018-03-28T04:21:00Z
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spelling 2018-03-26T10:29:04.0565818 v2 29032 2016-06-29 The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration e8784a005f86bc615bc6d04e87fbbacd 0000-0002-7760-3614 Peter Douglas Peter Douglas true false 1283ffdd09b091ec57ec3e235a48cfcc John Dingley John Dingley true false 2016-06-29 BMS 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. Journal Article Anaesthesia 00032409 Emergency Care, prehospital; Inhalation Therapy, oxygen; Equipment, design. 31 12 2016 2016-12-31 10.1111/anae.13595 COLLEGE NANME Biomedical Sciences COLLEGE CODE BMS Swansea University 2018-03-26T10:29:04.0565818 2016-06-29T15:07:09.0362905 Faculty of Medicine, Health and Life Sciences Swansea University Medical School - Medicine J. Dingley 1 D. Williams 2 P. Douglas 3 M. Douglas 4 J. O. Douglas 5 Peter Douglas 0000-0002-7760-3614 6 John Dingley 7 0029032-26032018102806.pdf 29032.pdf 2018-03-26T10:28:06.6970000 Output 256124 application/pdf Accepted Manuscript true 2016-06-29T00:00:00.0000000 true eng
title The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
spellingShingle The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
Peter Douglas
John Dingley
title_short The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
title_full The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
title_fullStr The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
title_full_unstemmed The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
title_sort The development and evaluation of a non-pressurised, chemical oxygen reaction generation vessel and breathing system providing emergency oxygen for an extended duration
author_id_str_mv e8784a005f86bc615bc6d04e87fbbacd
1283ffdd09b091ec57ec3e235a48cfcc
author_id_fullname_str_mv e8784a005f86bc615bc6d04e87fbbacd_***_Peter Douglas
1283ffdd09b091ec57ec3e235a48cfcc_***_John Dingley
author Peter Douglas
John Dingley
author2 J. Dingley
D. Williams
P. Douglas
M. Douglas
J. O. Douglas
Peter Douglas
John Dingley
format Journal article
container_title Anaesthesia
publishDate 2016
institution Swansea University
issn 00032409
doi_str_mv 10.1111/anae.13595
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str Swansea University Medical School - Medicine{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}Swansea University Medical School - Medicine
document_store_str 1
active_str 0
description 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.
published_date 2016-12-31T03:35:25Z
_version_ 1763751520748175360
score 11.012678

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