In this study, effects of using helium, nitrogen, air, carbon dioxide and argon gases as working fluid in a beta-type Stirling engine with rhombic drive mechanism and swept volume of 365 cm³ on the engine performance characteristics for two different stainless steel and titanium displacer pistons at charge pressures of 1–5 bar were examined. The performance characteristics of manufactured Stirling engine were investigated at 1000 K (± 10 K) hot end and 300 K (± 5 K) cold end temperatures using a specifically designed electrical heater. Energy and exergy analyses were carried out using temperature, pressure, speed and torque values measured in performance tests. As a result of the exergy analysis, helium gas performed the best in the stainless steel displacer piston at a charge pressure of 4 bar and an engine speed of 550 rpm. Under the said conditions, 0.3726 W/K entropy generation and 195.53 W destroyed exergy were calculated in thermodynamic analysis in the helium working fluid. Furthermore, under the same conditions, helium gas achieved the highest efficiency values of 48.04% for thermal efficiency, 56.54% for exergy efficiency and 69.2% for Carnot efficiency. The lowest exergetic performance was revealed in titanium displacer piston when argon was used as working fluid.

在这项研究中，使用氦气，氮气，空气，二氧化碳和氩气作为具有菱形驱动机构且扫掠体积为365 cm ³的β型斯特林发动机的工作流体的影响对两种不同的不锈钢和钛置换活塞在增压压力为1–5 bar时的发动机性能特性进行了研究。使用专门设计的电加热器，在1000 K（±10 K）热端和300 K（±5 K）冷端温度下研究了制成的斯特林发动机的性能特征。使用性能测试中测量的温度，压力，速度和扭矩值进行能量和火用分析。作为本能分析的结果，在不锈钢置换活塞中，氦气在4 bar的充气压力和550 rpm的发动机转速下表现最佳。在上述条件下，在氦工作流体的热力学分析中，产生了0.3726 W / K的熵产生和195.53 W的破坏了的火用。此外，在相同条件下，氦气的最高效率值是热效率48.04％，火用效率56.54％和卡诺效率69.2％。当使用氩气作为工作流体时，钛置换活塞显示出最低的充满力性能。