DSG槽式太阳能集热器传热与水动力耦合稳态模型

发布时间：2018-07-03 08:03

本文选题：槽式太阳能热发电系统 + 直接蒸汽发电　；参考：《动力工程学报》2014年07期

【摘要】：利用直接蒸汽发电(DSG)集热器传热特性与水动力特性耦合建立了HHC稳态模型,并利用所建模型对DSG集热器的稳态特性进行了仿真分析,得到了在太阳直射辐射强度(DNI)、工质质量流量、入口工质温度和入口工质压力变化时,DSG集热器出口参数的一系列重要变化规律.并与文献的实验数据以及其他文献所建模型计算结果进行了对比.结果表明:为保证DSG集热器正常运行时其出口工质处于干蒸汽区且出口温度在合理范围内,DNI需要大于一定阈值,并留有一定阈度,工质质量流量需设定在一定范围内,且可选范围较小,而入口工质温度、压力在较大范围内都能满足要求;通过实验数据与模型计算结果的对比,验证了所建模型的正确性和精确性.
[Abstract]:Based on the coupling of heat transfer characteristics and hydrodynamic characteristics of direct steam generation (DSG) collector, the steady state model of HHC is established, and the steady-state characteristics of DSG collector are simulated and analyzed. A series of important variation laws of the outlet parameters of DSG collector are obtained when the direct solar radiation intensity (DNI), mass flow rate, inlet working fluid temperature and inlet working fluid pressure change. The results are compared with the experimental data of the literature and the calculation results of the models established by other literatures. The results show that in order to ensure that the working fluid at the outlet of DSG collector is in the dry steam area and the outlet temperature is within a reasonable range, DNI needs to be greater than a certain threshold, and a certain threshold degree is left, and the mass flow rate of the working fluid should be set within a certain range. The optional range is small and the inlet working fluid temperature and pressure can meet the requirements in a large range. The correctness and accuracy of the model are verified by comparing the experimental data with the results of the model calculation.
【作者单位】：河海大学可再生能源发电技术教育部工程研究中心;河海大学能源与电气学院;
【基金】：国家重点基础研究发展计划资助项目(973计划)(2010CB227102) 南通市创新招标资助项目(BC2011009)
【分类号】：TM615

【参考文献】