火电机组节能不仅仅是大量新技术的简单堆积，更需要创新的理念。提出大冷端的新理念以及宽负荷节能的技术思想。基于技术经济比较，充分挖掘当地的循环水条件，完成了东营项目的深度优化设计，在国内外首次采用6缸6排汽汽轮机，其不同负荷下的平均热耗降低100 kJ/(kW•h)以上，标准煤单价为700元/t的条件下所增加投入的回收期为7年。东营项目冷端设计包含的专业融合、大冷端及宽负荷节能等创新理念，可用于新建火电项目与现役机组的汽轮机现代化改造的优化设计中。

Energy conservation for thermal power units is not only a simple accumulation of a large number of new technologies,but also necessary to add more creative ideas.The new idea of ‘big cold end’ and the technical idea of ‘energy conservation in wide load range’ are proposed.Based on the technical and economic comparison, through digging out the local circulating water condition sufficiently, the deep optimization design of Dongying project is completed to adopt the steam turbine with 6 cylinders and 6 exhaust steam equipments firstly at home and abroad,so that the average heat consumption rate is reduced by more than 100 kJ/(kW•h)at different loads and the payback period of the investment increased will be 7 years under the condition of the unit price of standard coal of 700 yuan/t. The creative ideas of professional integration, large cold end and wide load energy saving involved in the cold end design of Dongying project can be used for the optimal design of steam turbine modernization retrofit of new built the rmal power projects and commissioned units.

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