ABSTRACT
This chapter examines the four main types of UV air treatment systems and summarizes Ÿeld trials of air disinfection systems. The degree to which these systems are effective depends on local conditions and it cannot be said that one type of system is better than another, especially as economics often plays a part in the selection process. UVGI is not a stand-alone solution to air contamination problems but is an adjunct that, when properly designed and applied, can provide beneŸts in terms of reduced infection rates and energy savings (Memarzadeh, Olmsted, and Bartley 2010). Other factors, such as careful design of the hospital built environment, installation and effective operation of the HVAC system, and a high degree of attention to traditional methods of cleaning and disinfection, should be assessed before any decision is made to apply UVGI to meet indoor air quality requirements in health care facilities.
