| For the power plants that adopt once-through cooling water system drawing cooling water from natural water space, it is important to arrange the inlet and the outlet for good cooling effect. In this paper, the basic design principles of the cooling water project are first presented; some intake-outlet methods such as march-past method, differential method and eclipsed form method are analyzed. Then, the flowing characteristics of eclipsed form arrangement are analyzed and the effects of some main factors on inlet temperature are investigated. The laws of the inlet temperature varying with the parameters are obtained and the reasons for that are discussed. By comparing the inlet temperature of march-past method and eclipsed form, the superiority of the latter and its existent conditions are analyzed. Finally, the optimization measures for the cooling water intake-outlet project of power plant are investigated and some new ideas are put forward.
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