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Abstract
The high intensity ionizer (HII) has reached a level of development where projections can be made of its potential for enhancing electrostatic precipitator (ESP) performance within the electric utility industry. Future ESP performance requirements are forecast based on a scenario of possible changes in regulations for mass emissions, fine particulate, and opacity. An assessment is made of the alternative means of upgrading ESP performance over the next 15 years. It is concluded that of 570 ESP estimated to require upgrading by 1995 to meet possibly more stringent regulations, approximately 20%—or 117 units—may employ HII.