Open AccessEffect of non-condensable gas on heat conduction in steam sterilization process
Author(s) -
Yao Shen,
Xiaozhi Wang,
Zhuoya Yao,
Xiangang Li
Publication year - 2019
Publication title -
thermal science/thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci1904489s
Subject(s) - sterilization (economics) , thermal conduction , materials science , thermodynamics , dry heat , thermal , mechanics , nuclear engineering , composite material , physics , monetary economics , economics , foreign exchange market , engineering , foreign exchange
Non-condensable gas has an adverse effect on heat conduction in pressure steam sterilization. An experiment was carefully designed to study the effect, and a semi-empirical formulation is obtained to predict the maximal temperature difference between outside and inside of a package. This paper gives a systematical insight into the non-condensable gas effect, and there is a threshold of the non-condensable gas concentration, beyond which the thermal sterilization becomes invalid for complete killing microorganisms.