Numerical Analysis of Freezing Temperature Field with Freezing Pipes with Different Geometries

In the report, to understand the development rules of the temperature field of the freezing tube with different geometric size after being positive frozen for 40 days with the same brine cooling plan and the same amount of brine, ADINA finite element software was used for numerical analysis, a single factor method was used for simulation, the transient temperature field model was selected as the numerical model, so, the final temperature field development rule was obtained. The results suggested that with the same volume of brine, the larger the frozen area of the hollow freezing tube, the better the freezing effect of the solid freezing tube; for the hollow freezing tube, the different inlet and outlet pipe thickness have certain impact on freezing effect; for -1 ℃ and -10 ℃ isotherm, the geometric size have greater impact on -1 ℃ isotherm that on -10 ℃ isotherm, when reduced each 5 mm inlet and outlet pipe thickness, -1 ℃ isotherm radius increase 0.199 mm, -10 ℃ isotherm radius increased 0.112 mm; with the freezing tube axis as central, the freezing effect of 1.32 m and further place are not obvious. The conclusion can be used as a reference for future practical projects.