Environmental pressures and economic requirements have led to a drive to ever increasing steam parameters to further increase steam turbine cycle efficiencies. This poses a number of challenges: plant architecture,ste...Environmental pressures and economic requirements have led to a drive to ever increasing steam parameters to further increase steam turbine cycle efficiencies. This poses a number of challenges: plant architecture,steam turbine design and turbine material requirements. GE has been developing USC technology for more than 18 years and has many reference plants. The limits on inlet pressure and temperatures have been challenged as the technology and product development has proceeded. This paper discusses some of the options on how plant efficiency can be increased and some of the related challenges. The performance difference between a single reheat and double reheat is quantified based on a simplified thermodynamic model.展开更多
文摘Environmental pressures and economic requirements have led to a drive to ever increasing steam parameters to further increase steam turbine cycle efficiencies. This poses a number of challenges: plant architecture,steam turbine design and turbine material requirements. GE has been developing USC technology for more than 18 years and has many reference plants. The limits on inlet pressure and temperatures have been challenged as the technology and product development has proceeded. This paper discusses some of the options on how plant efficiency can be increased and some of the related challenges. The performance difference between a single reheat and double reheat is quantified based on a simplified thermodynamic model.
