| Document ID (ISN) | 109016 |
| CIS number |
09-188 |
| ISSN - Serial title |
1545-9624 - Journal of Occupational and Environmental Hygiene |
| Year |
2007 |
| Convention or series no. |
|
| Author(s) |
Rudnick S.N., First M.W. |
| Title |
Fundamental factors affecting upper-room ultraviolet germicidal irradiation - Part II. Predicting effectiveness |
| Bibliographic information |
May 2007, Vol.4, No.5, p.352-362. Illus. 22 ref. |
| Abstract |
Compared with increasing outdoor air ventilation rate, upper-room ultraviolet germicidal irradiation (UVGI) is an attractive technology for lowering the indoor concentration of airborne microorganisms and thereby reducing the risk of airborne transmission of disease. With relatively modest vertical air circulation, most of the air in a room can be irradiated in a brief time period without noise or significant power consumption. The hypothesis tested in this study is that the efficacy of upper-room UVGI to inactivate or kill airborne infectious microorganisms can be determined from an index of UVGI effectiveness, a dimensionless parameter designed to characterize vertical air circulation, the amount of UVGI provided, and their interaction. This index was found to correlate well with experimental measurements made in a laboratory chamber simulating a hospital room. See also CIS 09-000, ISN 4. |
| Descriptors (primary) |
ultraviolet radiation; microorganisms; prediction; hospitals; infection control |
| Descriptors (secondary) |
pathogenic bacteria; viruses; test laboratories; description of technique; ventilation systems; evaluation of technique; disinfection of air |
| Document type |
D - Periodical articles |
| Country / State or Province | USA |
| Subject(s) |
Commerce, services, offices
|
| Broad subject area(s) |
Biological hazards
Physical hazards
|
| Browse category(ies) |
Health care services
Non-ionizing radiation
|
