Environmental Assessment of Coal-Using Prime Movers for Residential/Commercial Total Energy Systems

摘要

Advanced prime mover technologies, such as open and closed cycle gas turbines, the Stirling engine, and steam turbines using atmospheric fluidized bed combustors, were examined for emission of air pollutants. Based on total energy systems for four communities, the net environmental impact of these technologies was found to depend on the utility fuel mix, the residential and commercial mix, the local fuel displaced, and the prime mover efficiency. For maximum emission savings, a roughly equal residential/commercial mix is desirable. In comparison to a conventional system based on a coal-fueled utility, total energy systems based on coal-fueled advanced engines can save up to 48% each of sulfur oxides and particulates and up to 80% of nitrogen oxides. (ERA citation 06:024121)