Abstract:
:This research was conducted to evaluate the design of hospital ultraviolet germicidal irradiation (UVGI) systems and to assess their effectiveness for inactivating airborne mycobacteria. A computational fluid dynamics (CFD) model was developed and tested by simulating previous experiments measuring the effectiveness of a lab-based UVGI system. Model testing showed reasonable agreement with experimental measurements. The model captured trends similar to the experiments: Effectiveness of an upper-room UVGI system is higher when there is no ventilation compared with when there is ventilation, and wintertime ventilation conditions can markedly decrease the performance of an upper-room UVGI system. The CFD model was then applied to evaluate the design of three hospital patient rooms. A patient and an exam room with upper-room UVGI systems, and a patient room with an exhaust duct system were studied. Results showed that one of the UVGI systems was not very effective, due to the very efficient ventilation design. The other two configurations were reasonably to very effective at inactivating airborne mycobacteria. The most effective application was the one in which the room air-exchange rate was very low. CFD modeling can be useful for assessing whether hospital UVGI installations and ventilation systems are effective for infection control.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Xu P,Fisher N,Miller SLdoi
10.1111/php.12062subject
Has Abstractpub_date
2013-07-01 00:00:00pages
792-8issue
4eissn
0031-8655issn
1751-1097journal_volume
89pub_type
杂志文章abstract::The mutant T203V of the light driven chloride pump halorhodopsin from Halobacterium salinarum was crystallized and the X-ray structure was solved at 1.6 angstroms resolution. The T203V structure turned out to be nearly identical to the wild type protein with a root mean square deviation of 0.43 angstroms for the carbo...
journal_title:Photochemistry and photobiology
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pub_type: 杂志文章
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pub_type: 杂志文章
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doi:10.1111/j.1751-1097.1994.tb05022.x
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pub_type: 临床试验,杂志文章
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更新日期:2013-05-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1995.tb05252.x
更新日期:1995-07-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:
更新日期:1998-10-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:1996-07-01 00:00:00
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