CAJ | 학술논문

对不同材料及孔隙率的斯特林发动机回热器的性能进行了多循环模拟分析和实验研究。研究的回热器填充材料有泡沫铜与不锈钢丝网，材料孔隙率分别为75％、85％以及复合型孔隙率，回热器长径比为2∶1及3∶1，研究结果显示：不锈钢回热器的热容量较大，而泡沫铜回热器的启动速度和换热速度较快；75％孔隙率回热器换热量较大，而85％孔隙率回热器温度场收敛速度更快；长径比2∶1回热器压损较小，而3∶1回热器的换热量较大。经实验研究分析，实验数据与模拟结果偏差约为5％，可为斯特林发动机回热器的设计提供依据。
대불동재료급공극솔적사특림발동궤회열기적성능진행료다순배모의분석화실험연구。연구적회열기전충재료유포말동여불수강사망，재료공극솔분별위75％、85％이급복합형공극솔，회열기장경비위2∶1급3∶1，연구결과현시：불수강회열기적열용량교대，이포말동회열기적계동속도화환열속도교쾌；75％공극솔회열기환열량교대，이85％공극솔회열기온도장수렴속도경쾌；장경비2∶1회열기압손교소，이3∶1회열기적환열량교대。경실험연구분석，실험수거여모의결과편차약위5％，가위사특림발동궤회열기적설계제공의거。
The performance of Sterling engine regenerators was simulated and experimentally researched . The filling materials were foamed copper and stainless steel wire mesh , whose porosity was 75%or 85%respectively , and the ratio of length to diameter was 2:1 or 3:1 .Research results show that:the heat ca-pacity of stainless steel heat exchanger is larger , and the start-up speed of foamed copper heat exchanger is faster;Heat transfer of 75%porosity regenerator is larger , while the temperature convergence speed of 85%porosity regenerator is faster;Pressure loss of 2:1 regenerator is smaller , while the 3:1 regenerator exchanger heat is larger .The experimental study indicates that the experimental data is in good agreement with simulation results with a 5%margin of error , so it can provide some reference for the design of re-generators .