基于热网络的储能翅片管温度响应计算模型

To solve the problem of fast calculation of the outlet temperature response of the latent heat storage cooling equipment for airborne high-energy weapons， a two-dimensional thermal network model was proposed to predict the temperature response of the finned tube heat exchanger during the energy storage stage. An equivalent thermal resistance model was established， and equivalent thermal conductivity was introduced to consider the influence of natural convection on the melting of phase change materials. The results were compared with the enthalpy-porous method simulation results under different flow rates，inlet temperatures，fin structures and phase change materials，which verified the accuracy of the thermal network model. The maximum error of the average outlet temperature of paraffin phase change materials was 0.634 K. Compared with the enthalpy-porous method， the thermal network model saved 99% of the calculation time，and can be effectively used in the design and optimization of complex finned tube latent heat storage systems.