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发表时间：2022-10-10

发表刊物：大连理工大学学报

所属单位：能源与动力学院

卷号：52

期号：1

页面范围：11-15

ISSN号：1000-8608

摘要：In order to achieve water-power cogeneration,the last-stage exhaust
   steam provided by condensing steam turbines under low vacuum operation
   is utilized as thermal resources for the low-temperature multi-effect
   distillation desalination system.Multi-stage heat-regenerative
   mathematical model of power plant thermodynamic system is constructed by
   matrix method.The off-design parameters under low vacuum operation are
   calculated on the basis of Friuli Nagel formula.Then,the mathematical
   model of low-temperature multi-effect distillation desalination system
   is built through equivalent temperature difference method.It can be
   concluded that within the selected temperature range of exhaust steam
   there exist optimal temperature of exhaust steam and the number of
   evaporators to make the fresh water cost lowest for different water
   demands.The effect of the temperature difference between desalination
   effects on the thermal economic performance of the water-power
   cogeneration system is also discussed.

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