中文摘要：

为了改进精力效率，减少 CO2 排放并且减少，费用，为脱盐水的一个 cogeneration 系统，热和力量生产在这份报纸被学习。cogeneration 系统的上层建筑由一个基于煤的热发电厂(TPP ) 组成了，一个多级式的闪光脱盐(MSF ) 模块和反向的渗透脱盐(RO ) 模块。为水，热和力量生产的不同要求，相应最佳的生产结构是不同的。在合理简化以后，每个单位的过程模型被造。包括联合起来的投资，和操作和维护费用，节俭的模型被介绍。由解决这非线性的编程(NLP ) 模型，其目的是最小化年度费用，一个最佳的 cogeneration 系统能被获得。比较了分开生产系统，最佳的系统能减少全部的年度费用的 16.1%-21.7% ，显示出这个设计方法是有效的。

英文摘要：

In order to improve the energy efficiency, reduce the CO2 emission and decrease the cost, a cogenera- tion system for desalination water, heat and power production was studied in this paper. The superstructure of the cogeneration system consisted of a coal-based thermal power plant （TPP）, a multi-stage flash desalination （MSF） module and reverse osmosis desalination （RO） module. For different demands of water, heat and power production, the corresponding optimal production structure was different. After reasonable simplification, the process model ot each unit was built. The economical model, including the unit investment, and operation and maintenance cost, was presented. By solving this non-linear programming （NLP） model, whose objective is to minimize the annual cost, an optimal cogeneration system can be obtained. Compared to separate production systems, the optimal system can reduce 16.1%-21.7% of the total annual cost. showing this design method was effective.