Recuperator Concept Design of Low-Emission 2-MW Gas Turbine

Due to energy shortage and air pollution, the distributed energy supply system has been quickly developed. Because it can improve the effectiveness of natural gas utilization and save energy and reduce emission. The core equipment of the distributed energy supply system is the gas turbine which is rated up to 2 MWs in China. So a recuperated cycle gas turbine was presented in this paper. Three types of recuperator such as the tabular, plate fin, and primary surface recuperators were designed and analyzed. The result shows that the primary surface recuperator has more advantages than the other two. It has higher compactness and less weight. If the whole manufacture process is well developed the primary surface recuperator will have more competitiveness in the future recuperator market. What is more, the increasing of the effectiveness of the recuperator will result in a dramatic increase in the recuperator size and weight. So when a recuperator is designed it must be taken into consideration as an integrate part of the overall energy conversion system.