Numerical investigations of a Trilateral Flash Cycle under system off-design operating conditions
Numerical investigations of a Trilateral Flash Cycle under system off-design operating conditions
复制标题
系统非设计运行条件下三边闪蒸循环的数值研究
DOI：
10.1016/j.egypro.2019.02.070
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Marchionni M
中科院分区：
文献类型：
--
作者：
Marchionni M
目前的研究提出了一个综合模型的100千瓦三边闪蒸循环TFC系统组成的板式换热器和双螺杆膨胀机的子模块，以评估和确定的操作参数，主要影响TFC的性能在非设计条件下。热交换器和管道的建模方法基于1D CFD，同时考虑泵和膨胀机的操作图。模拟过程考虑了热源温度和质量流率从设计点的变化。TFC的性能进行了分析，在效率和功率输出，而膨胀机的性能进行了讨论，在体积和等熵效率。进行敏感性分析，以评估最合适的参数控制的目的和系统性能优化。结果指出，由于机器的转速以及加热器的非设计行为，膨胀机处的入口质量具有很大的敏感性。
The current research presents a comprehensive model of a 100 kWe Trilateral Flash Cycle TFC system composed of sub-modules for the plate heat exchangers and twin-screw expanders to assess and identify the operating parameters that mostly affect the TFC performance at off-design conditions. The modelling approach for heat exchangers and piping is based on 1D CFD while considering the operating maps for pump and expander. The simulation process takes into account variations of the heat source temperature and mass flow rate from the design point. The TFC performance is analysed in terms of efficiency and power output while the expander performance is discussed in terms of volumetric and isentropic efficiencies. A sensitivity analysis is carried out to assess the most suitable parameter for control purposes and system performance optimisation. The results point out a large sensitivity of the inlet quality at the expander due to the revolution speed of the machine but also the off-design behaviour of the heater.
用于低级热能转换应用的封装三边闪蒸循环系统的开发和分析
影响因子：
4.8
作者：
Bianchi G
通讯作者：
Bianchi G