摘要
开展带螺旋肋片方环形通道内超临界水传热特性实验,获得不同热工参数条件下的实验数据。实验工况范围为:压力23~25 MPa;质量流速600~1000 kg/(m2·s);热流密度300~800 k W/m2;螺距160 mm。基于实验数据研究压力、质量流速、热流密度对传热特性的影响。与光滑方环形通道内的实验数据对比发现:在相同热工参数条件下,带肋片方环形通道内换热系数比光滑方环形通道高,螺旋肋片对超临界水条件下的传热有较大的改善作用。对实验数据进行多元线性回归得到带螺旋肋片方环形通道内超临界水传热经验关系式。
The experimental research of the heat transfer in square annular channel with helix rib has been carried out under various thermo-hydraulic parameters in this paper. The experimental parameters are as follows, the system pressure P： 23-25MPa; the mass flow velocity G： 600-1000kg/（m2·s）; the heating flux q： 300-800 kW/m2; and the wrapped pitch is 160mm.The experimental results are described in detail and the effects of pressure, mass flow and heat flux on the heat transfer are also analyzed. The comparison between the square annular channel with helix rib and bare square annular channel results indicates that the helix rib can enhance the heat transfer evidently. Based on the experimental data, a satisfactory correlation of heat transfer is given.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2017年第6期18-22,共5页
Nuclear Power Engineering
关键词
超临界水
传热特性
方环形通道
螺旋肋片
Supercritical water, Helix rib, Square annular channel, Heat transfer
