Linnes J C, Rudnick S N, Hunt G M, McDevitt J J, Nardell E A
Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA; Division of Global Health Equity, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
Indoor Air. 2014 Apr;24(2):116-24. doi: 10.1111/ina.12063. Epub 2013 Oct 21.
A novel whole ceiling upper-room ultraviolet germicidal irradiation (UVGI) system [eggcrate ultraviolet (UV)] has been developed that incorporates open-cell 'eggcrate'-suspended ceiling panels and bare UV lamps with a ceiling fan. Upper-room UVGI is more effective for air disinfection than mechanical ventilation at much lower installation and operating costs. Conventional upper-room UVGI fixtures employ multiple tightly spaced horizontal louvers to confine UV to the upper-room. These louvered fixtures protect occupants in the lower-room from UV-induced eye and skin irritation, but at a major cost to fixture efficiency. Using a lamp and ballast from a conventional upper-room UVGI fixture in the eggcrate UV system, the germicidal efficacy was markedly improved even though the UV radiation emitted by the lamp was unchanged. This fundamental change in the application of upper-room UVGI air disinfection should permit wider, more effective application of UVGI globally to reduce the spread of airborne infection.
一种新型的全天花板式房间上部紫外线杀菌辐照（UVGI）系统[格栅紫外线（UV）]已被开发出来，该系统结合了开孔的“格栅”式吊顶板、裸紫外线灯和吊扇。房间上部UVGI在空气消毒方面比机械通风更有效，且安装和运行成本低得多。传统的房间上部UVGI装置采用多个紧密间隔的水平百叶窗将紫外线限制在房间上部。这些带百叶窗的装置可保护下部房间的居住者免受紫外线引起的眼睛和皮肤刺激，但这会大大降低装置效率。在格栅紫外线系统中使用传统房间上部UVGI装置的灯和镇流器，即使灯发出的紫外线辐射不变，杀菌效果也显著提高。房间上部UVGI空气消毒应用的这一根本性变化应能在全球范围内更广泛、更有效地应用UVGI，以减少空气传播感染的扩散。
