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Water, air Emissions, and Cost Impacts of air-cooled microturbines for Combined Cooling, Heating, and Power Systems： A Case Study in the Atlanta Region

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Engineering 2016年第4期2卷 470-480页

作者： Jean-Ann James Valerie M. Thomas Arka Pandit Duo Li John C. Crittenden Brook Byers Institute for Sustainable Systems Georgia Institute of Technology Atlanta CA 30332 USA School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta CA 30332 USA H. Milton Stewart School of Industrial and Systems Engineering Georgia Institute of Technology Atlanta GA 30332 USA School of Public Policy Georgia Institute of Technology Atlanta CA 30332 USA Crittenden and Associates Beijing 100102 China

The increasing pace of urbanization means that cities and global organizations are looking for ways to increase energy efficiency and reduce emissions. Combined cooling, heating, and power （CCHP） systems have the potential to improve the energy generation efficiency of a city or urban region by providing energy for heating, cooling, and electricity simultaneously. The purpose of this study is to estimate the water consumption for energy generation use, carbon dioxide （CO2） and NOx emissions, and economic impact of implementing CCHP systems for five generic building types within the Atlanta metropolitan region, under various operational scenarios following the building thermal （heating and cooling） demands. Operating the CCHP system to follow the hourly thermal demand reduces CO2 emissions for most building types both with and without net metering. The system can be economically beneficial for all building types depending on the price of natural gas, the implementation of net metering, and the cost structure assumed for the CCHP system. The greatest reduction in water consumption for energy production and NOx emissions occurs when there is net metering and when the system is operated to meet the maximum yearly thermal demand, although this scenario also results in an increase in greenhouse gas emissions and, in some cases, cost. CCHP systems are more economical for medium office, large office, and multifamilv residential buildings.

关键词： Combined cooling, heating, and power (CCHP) air-cooled microturbines Distributed energy generation Water for energy production Net metering

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