Abstract
Steam sterilization processes rely on high heat transfer rates from the steam to the medical devices. To guarantee this, all non-condensable gases (NCGs) must be removed from the steam sterilizer before sterilization. The ratios and distribution of the NCGs in the pre-sterilization phases of both a vacuum and a non-vacuum steam sterilizer are investigated. Two CFD models for simulation of the NCGs in the sterilizers were developed and validated by the measurements of a pressure sensor and eight thermocouples inside the steam sterilizer. Furthermore, a novel method was developed to calculate the real ratio of NCGs based on the standard measurement (EN 13060). The results show that the NCGs ratio defined in the EN 13060 did not accurately represent the real ratios of the NCGs.
| Originalsprache | englisch |
|---|---|
| Seiten (von - bis) | 502-513 |
| Seitenumfang | 12 |
| Fachzeitschrift | Chemie - Ingenieur - Technik |
| Jahrgang | 91 |
| Ausgabenummer | 4 |
| Frühes Online-Datum | 21 Jan 2019 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - Apr 2019 |
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ASJC Scopus subject areas
- !!Chemical Engineering(all)
- !!Chemistry(all)
- !!Industrial and Manufacturing Engineering
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CFD Investigation of Non-Condensable Gases in Vacuum and Non-Vacuum Steam Sterilizers. / Feurhuber, Manuel; Magno, Marino; Miranda, Marco; Prieler, René Josef; Hochenauer, Christoph.
in: Chemie - Ingenieur - Technik, Jahrgang 91, Nr. 4, 04.2019, S. 502-513.Publikation: Beitrag in einer Fachzeitschrift › Artikel › Forschung › Begutachtung
}
TY - JOUR
T1 - CFD Investigation of Non-Condensable Gases in Vacuum and Non-Vacuum Steam Sterilizers
AU - Feurhuber, Manuel
AU - Magno, Marino
AU - Miranda, Marco
AU - Prieler, René Josef
AU - Hochenauer, Christoph
PY - 2019/4
Y1 - 2019/4
N2 - Steam sterilization processes rely on high heat transfer rates from the steam to the medical devices. To guarantee this, all non-condensable gases (NCGs) must be removed from the steam sterilizer before sterilization. The ratios and distribution of the NCGs in the pre-sterilization phases of both a vacuum and a non-vacuum steam sterilizer are investigated. Two CFD models for simulation of the NCGs in the sterilizers were developed and validated by the measurements of a pressure sensor and eight thermocouples inside the steam sterilizer. Furthermore, a novel method was developed to calculate the real ratio of NCGs based on the standard measurement (EN 13060). The results show that the NCGs ratio defined in the EN 13060 did not accurately represent the real ratios of the NCGs.
AB - Steam sterilization processes rely on high heat transfer rates from the steam to the medical devices. To guarantee this, all non-condensable gases (NCGs) must be removed from the steam sterilizer before sterilization. The ratios and distribution of the NCGs in the pre-sterilization phases of both a vacuum and a non-vacuum steam sterilizer are investigated. Two CFD models for simulation of the NCGs in the sterilizers were developed and validated by the measurements of a pressure sensor and eight thermocouples inside the steam sterilizer. Furthermore, a novel method was developed to calculate the real ratio of NCGs based on the standard measurement (EN 13060). The results show that the NCGs ratio defined in the EN 13060 did not accurately represent the real ratios of the NCGs.
KW - Autoclaves
KW - Computational fluid dynamics
KW - Heat transfer
KW - Non-condensable gases
KW - Steam sterilizers
KW - Wall condensation
UR - http://www.scopus.com/inward/record.url?scp=85060339779&partnerID=8YFLogxK
U2 - 10.1002/cite.201800088
DO - 10.1002/cite.201800088
M3 - Article
VL - 91
SP - 502
EP - 513
JO - Chemie - Ingenieur - Technik
JF - Chemie - Ingenieur - Technik
SN - 0009-286X
IS - 4
ER -