Speaker
Prof.
Lai Feng Li
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Description
The accuracy of correlations of colburn(j) and friction(f) factor have important effect on the accuracy of simulation results in the dynamic simulation of large scale helium systems. However，the most available correlations in the literatures and experimental results are used air as heat transfer medium. A steady-state three-dimensional numerical model was built to study the heat transfer and pressure drop characteristicsof an offset strip-fin heat exchanger in helium systems. Then, the j and f factor were obtained under different Reynolds though numerical analysis. These results were compared with the existing results obtained by air to find the influence of different fluid medium. Further, the most suitable and convenient correlations for helium were developed by regression analysis. This work may be helpful to guide the selection of the general correlations of j and f in calculation of heat exchanger in dynamic simulation.
Author
Dr
Xiujuan Xie
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Co-authors
Ms
Cui Lv
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Prof.
Hui Ming Liu
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Prof.
Jihao Wu
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Prof.
Qing Li
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
