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.

译文

已开发出一种新颖的整个天花板上部房间紫外线杀菌照射 (UVGI) 系统 [eggcrate ultraviolet (UV)],该系统结合了开放式 “eggcrate” 吊顶面板和带有吊扇的裸露紫外线灯。上部房间的UVGI比机械通风更有效地进行空气消毒,安装和运营成本要低得多。传统的上部房间UVGI固定装置采用多个紧密间隔的水平百叶窗,以将紫外线限制在上部房间。这些百叶窗式固定装置可保护下层房间的乘员免受紫外线引起的眼睛和皮肤刺激,但固定装置效率的主要成本。在eggcrate UV系统中使用传统的上层UVGI灯具的灯和镇流器,即使灯发出的UV辐射没有变化,杀菌效果也得到了显着改善。上室UVGI空气消毒应用的这一根本变化应允许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。

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