Analysis and Experiment of Heat Transfer Performance of Straight-Channel Grid Regenerator

The design of heat transfer performance regenerator is the key technology Stirling machine and great significance to ensure operation efficiency equipment. In this study temperature difference between two ends at room less than 50K. This paper attempts straight channel grid verify its accuracy. At first, a straight-channel was designed in by analyzing influence structural parameters on order reduce flow resistance loss. Pore Scale method Representative Elementary Volume methods were combined analyze characteristics regenerator. Compared with wire mesh under same condition, regenerator’s could 96.2%. When length-diameter ratio 2:1 porosity 0.4 0.5, satisfactory when it applied pump temperature. Then, A segmented variable based regenerator, proved be better that Finally, regenerators developed additive manufacturing technology, single blow experiment platform built. experimental results fit well simulation results, maximum error being 1.5%. prove correctness model, which lays foundation for subsequent analysis periodic