采用模块化建模方法研究了无蓄热装置再循环方式直接产生蒸汽型抛物面槽式太阳能热动力发电站(solar thermal power plant using direct steam generation in parabolic trough collectors filed,DSG-PTCs-STTP)热力系统动态仿真模型。...采用模块化建模方法研究了无蓄热装置再循环方式直接产生蒸汽型抛物面槽式太阳能热动力发电站(solar thermal power plant using direct steam generation in parabolic trough collectors filed,DSG-PTCs-STTP)热力系统动态仿真模型。依照守恒定律和热力学、传热学、流体力学等基本关系式,在一定简化条件下,研究了抛物面槽式聚光集热系统的聚光器、预热段、蒸发段、过热段及汽水缓冲分离器的数学模型,结合其他已有的仿真模型(如流体网络、汽轮机、凝汽器、除氧器、水泵、发电励磁等过程及设备模型等),建立了完整的DSG-PTCs-STTP热力系统实时动态仿真模型。仿真试验表明所开发的仿真模型能够正确反映研究对象热力系统动态特性和全工况运行过程,模型运算稳定可靠。可用于DSG-PTCs-STTP机组实时仿真系统的开发,还可为机组运行特性研究和控制系统验证提供良好的非线性对象模型。展开更多
A novel vacuum ice slurry producing system with jet-pumps was proposed to deal with the problems of high energy consumption and ice blockage.In this novel system,one steam driven by a jet-pump was used to create vacuu...A novel vacuum ice slurry producing system with jet-pumps was proposed to deal with the problems of high energy consumption and ice blockage.In this novel system,one steam driven by a jet-pump was used to create vacuum in a hermetic vessel where water was sprayed through a nozzle to produce ice slurry,while the other steam was used to provide enough cold energy to make the left vapor in the hermetic vessel condense.Mathematical models of this novel system were established and theoretical simulation on the performance characteristics was also implemented based on the MATLAB program.Results show that the novel system is feasible and practicable,and the system performance is affected by many factors,such as the temperature of the generators,condensing temperature,evaporation temperature,and the cooling load of the refrigerator sub-system.The findings are helpful to improve the performance of ice slurry producing system.展开更多
文摘采用模块化建模方法研究了无蓄热装置再循环方式直接产生蒸汽型抛物面槽式太阳能热动力发电站(solar thermal power plant using direct steam generation in parabolic trough collectors filed,DSG-PTCs-STTP)热力系统动态仿真模型。依照守恒定律和热力学、传热学、流体力学等基本关系式,在一定简化条件下,研究了抛物面槽式聚光集热系统的聚光器、预热段、蒸发段、过热段及汽水缓冲分离器的数学模型,结合其他已有的仿真模型(如流体网络、汽轮机、凝汽器、除氧器、水泵、发电励磁等过程及设备模型等),建立了完整的DSG-PTCs-STTP热力系统实时动态仿真模型。仿真试验表明所开发的仿真模型能够正确反映研究对象热力系统动态特性和全工况运行过程,模型运算稳定可靠。可用于DSG-PTCs-STTP机组实时仿真系统的开发,还可为机组运行特性研究和控制系统验证提供良好的非线性对象模型。
基金Project(51376198)supported by the National Natural Science Foundation of ChinaProject(11JJ22029)supported by the Hunan Provincial Natural Science Foundation of China
文摘A novel vacuum ice slurry producing system with jet-pumps was proposed to deal with the problems of high energy consumption and ice blockage.In this novel system,one steam driven by a jet-pump was used to create vacuum in a hermetic vessel where water was sprayed through a nozzle to produce ice slurry,while the other steam was used to provide enough cold energy to make the left vapor in the hermetic vessel condense.Mathematical models of this novel system were established and theoretical simulation on the performance characteristics was also implemented based on the MATLAB program.Results show that the novel system is feasible and practicable,and the system performance is affected by many factors,such as the temperature of the generators,condensing temperature,evaporation temperature,and the cooling load of the refrigerator sub-system.The findings are helpful to improve the performance of ice slurry producing system.
