Analytical Solution of Heat Transfer Performance of Grid Regenerator in Inverse Stirling Cycle

The regenerator plays an extremely important role in the Stirling circulation. A grid can be used for inverse machines at room temperature due to its low flow resistance. This paper proposes a hexagonal theoretically explore heat transfer properties cycle and establishes approximate analytical model analyze effect mechanism of working frequency, thermal diffusivity wall thickness on oscillation flow. results show that is one key factors affecting equivalent coefficient. Specifically, too small or large increases instability process. ultimate determined by coefficient penetration depth, whose optimal value ensures not only sufficient exchange but also full utilization materials. With increase performance improved monotonously. Therefore, high–frequency operation improve regenerator. In addition, optimization criterion size with specific capacity as objective parameter proposed based parameters were obtained when relative was set 0.8 mm up 104–105 W/m2·K indicating has broad application prospects cycle.