| The quality of the cold-end system of power plant has very important influence on unit's operation economy. This paper has made a systematic analysis to the operation characteristics of equipments relating to cold-end system theoretically, has put forward cold-end systematic index evaluation system , The system has been divided into a three-order power index and resolved the performance evaluation criteria of system and equipments, thus confirmed the relation between every influence factor of the system and economic index of the system. This paper has set up more comprehensive mathematical model and the detailed research is carried out economic optimization analysis for the whole cold-end system.According to every parameter and influence factor change law of cold-end system and it's economic optimization mathematical model established above cold-end system, with one power plant in the Inner Mongol as an example finally, this paper has applied equipments parameters and the operation data of the practical power unit in its cold-end to the systematic theory mathematical model of the cold-end described above, has analyzed the working state of this system, and has optimized its internal device performance . The conclusion indicates the exactness of this mathematical model and the cold-end system of this power plant has certain energy-conserving potentiality.LiBaoliang (Thermal Power Engineering) Directed by prof. Zhang Guang...
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