28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

CFD studies on heat transfer and pressure drop characteristics of an offset strip-fin heat exchanger in helium systems

Not scheduled
2h
JW Marriott Starr Pass Resort

JW Marriott Starr Pass Resort

Tucson, Arizona USA
Poster Presentation CEC-01 - Large-Scale Refrigeration and Liquefaction

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.

Primary 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)

Presentation Materials