A vacuum insulated evaporator (VIE) is a form of pressure vessel that allows the bulk storage of cryogenic liquids including oxygen, nitrogen and argon for industrial processes and medical applications.[1]
Diagram showing the components of a VIE system.A photo showing a VIE system.
The purpose of the vacuum insulation is to prevent heat transfer between the inner shell, which holds the liquid, and surrounding atmosphere.[2] Without functioning insulation, the stored liquid will rapidly warm and undergo a phase transition to gas, increasing significantly in volume and potentially causing a catastrophic failure to the vessel due to an increase in pressure. To combat such an event, VIEs are installed with a pressure safety valve.
To remain a liquid, the vessel contents must be kept at or below its critical temperature. The critical temperature of oxygen is −118 °C; above this temperature, applying more pressure will not result in a liquid, but rather a supercritical fluid.[3]
^Peng, Changhai; Yang, Jianqiang (2016-05-19). "Structure, Mechanism, and Application of Vacuum Insulation Panels in Chinese Buildings". Advances in Materials Science and Engineering. Retrieved 2021-09-14.
^"How Does Vacuum Insulation Work?". Home Guides | SF Gate. Retrieved 2021-09-14.
August 31, 2023
vacuum, insulated, evaporator, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jst. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Vacuum insulated evaporator news newspapers books scholar JSTOR December 2009 Learn how and when to remove this template message A vacuum insulated evaporator VIE is a form of pressure vessel that allows the bulk storage of cryogenic liquids including oxygen nitrogen and argon for industrial processes and medical applications 1 Diagram showing the components of a VIE system A photo showing a VIE system The purpose of the vacuum insulation is to prevent heat transfer between the inner shell which holds the liquid and surrounding atmosphere 2 Without functioning insulation the stored liquid will rapidly warm and undergo a phase transition to gas increasing significantly in volume and potentially causing a catastrophic failure to the vessel due to an increase in pressure To combat such an event VIEs are installed with a pressure safety valve To remain a liquid the vessel contents must be kept at or below its critical temperature The critical temperature of oxygen is 118 C above this temperature applying more pressure will not result in a liquid but rather a supercritical fluid 3 References Edit Vacuum Insulated Evaporators www cinder hk Retrieved 2021 09 14 Peng Changhai Yang Jianqiang 2016 05 19 Structure Mechanism and Application of Vacuum Insulation Panels in Chinese Buildings Advances in Materials Science and Engineering Retrieved 2021 09 14 How Does Vacuum Insulation Work Home Guides SF Gate Retrieved 2021 09 14 Retrieved from https en wikipedia org w index php title Vacuum insulated evaporator amp oldid 1045560504, wikipedia, wiki, book, books, library,
