采用分离的交叉连接式(或前置式)蒸汽冷却器来改进汽机的热效率已不是一种新概念。BBC公司采用这种利用蒸汽过热度的方法已有25年的历史了.在美国,从燃料成本和减少燃料消耗考虑,应用蒸汽冷却器又重新引起了人们的重视. 木文从热力学的角度,着重对设备的能力、消耗和效率进行分析,同时也考虑了设计优化的主要方法.下而将对其中两种方法作介绍. It is not a new concept to use a separate crossover (or front-mounted) steam cooler to improve the thermal efficiency of a turbine. BBC has been using this method of steam superheat for 25 years, and in the United States, the application of steam coolers has re-emerged from the viewpoint of fuel costs and fuel consumption reduction.Mu Wen from the thermodynamic point of view, It focuses on the analysis of equipment capabilities, consumption and efficiency, and also considers the main methods of design optimization.