TAILIEUCHUNG - Fuel Cell/Gas Turbine Hybrid

With increasing energy demands, dwindling fossil energy resources, and environmental concerns associated with criteria pollutants and greenhouse gases, significant attention in the power generation community has been focused on increasing efficiency and reducing emissions. A highly efficient and low-emission concept is the fuel cell gas turbine (GT) hybrid. Hybrid systems are comprised of fuel cells integrated with a GT engine. A variety of potential configurations have been proposed and a number of cycles have been investigated. The advantage sought is a synergism that yields a performance that exceeds the simple sum of the two systems. Both experimental and theoretical. | Fuel Cell Gas Turbine Hybrid S Samuelsen and J Brouwer University of California Irvine CA USA 2009 Elsevier . All rights reserved. Introduction With increasing energy demands dwindling fossil energy resources and environmental concerns associated with criteria pollutants and greenhouse gases significant attention in the power generation community has been focused on increasing efficiency and reducing emissions. A highly efficient and low-emission concept is the fuel cell gas turbine GT hybrid. Hybrid systems are comprised of fuel cells integrated with a GT engine. A variety of potential configurations have been proposed and a number of cycles have been investigated. The advantage sought is a synergism that yields a performance that exceeds the simple sum of the two systems. Both experimental and theoretical analyses of hybrid systems have demonstrated that when appropriately combined remarkable performance attributes can result. In particular hybrid systems are capable of 1 unusually high fuel-to-end-use efficiency and 2 virtually zero emission of criteria pollutants. The environmental and energy-efficient performance suggests that hybrid systems can contribute to 1 new and secure fossil-fueled energy infrastructure 2 sustainable power generation when operated with renewable fuels and 3 the provision of transportation fuels including the introduction of the hydrogen economy. Theoretical analyses and early experimental results show that no fossil fuel-based technology can compete with the high efficiency and environmental performance of hybrid systems. In addition the market applications for hybrid technologies range from stationary to mobile in size from kilowatts to megawatts and operate on fuels from coal and biomass syngas fuels to natural gas and hydrogen. For stationary applications prototypes have been tested and the first commercial unit has been deployed in a distributed generation installation. In addition concepts are being actively developed for .

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