摘要
塔式太阳能热发电系统中,由于定日镜场的聚焦作用使得腔式吸热器受热面局部区域热负荷高度集中且随时间和空间不断变化导致吸热器系统工质流量分配特性恶化。该文以吸热器蒸发受热面水动力特性的试验平台为研究对象,结合吸热器内辐射-对流的能量传递过程,建立受热管内工质流动换热计算模型,在此基础上建立非均匀热负荷分布条件下腔式吸热器水动力计算的非线性数学模型,得出不同工况下蒸发受热面内工质的流量分配规律。
In the tower solar power generation,the heliostats field reflects sunlight to one point to focus heat flux on the cavity receiver surface. The radiation heat flux is always non-uniform temporally and spatially,which may lead to extremely local over-heat on the receiver evaporation panels. In this paper,according to the energy conservation in th ecavity,a non-linear mathematical model of hydrodynamics characteristics in the evaporation panels under variable heat load was developed to obtain the flow distribution of the heated surfaces,based on the experimental loop which was set up to obtain the hydrodynamic characteristics.
作者
郝芸
王跃社
胡甜
邓倩
Hao Yun;Wang Yueshe;Hu Tian;Deng Qian(State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第1期38-43,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金面上项目(51276144)
关键词
太阳能发电
热负荷
流体动力学
数值模型
solar power generation
heat load
hydrodynamics
numerical model
