PERFORMANCE PREDICTION AND PARAMETRIC OPTIMIZATION OF γ-TYPE FREE PISTON STIRLING ENGINE

被引：0

作者：

Luo, Xinkui ^{[1
]}

Wang, Xiaojun ^{[1
]}

Yan, Chunjie ^{[1
]}

Zhang, An ^{[1
]}

Zhang, Xuelin ^{[1
]}

Ye, Wenlian ^{[2
]}

机构：

[1] Lanzhou Inst Phys, Key Lab Vacuum Technol & Phys, Lanzhou, Gansu, Peoples R China

[2] Lanzhou Univ Technol, Coll Energy & Power Engn, Key Lab Fluid Machinery & Syst, Lanzhou, Gansu, Peoples R China

来源：

THERMAL SCIENCE | 2024年 / 28卷 / 1A期

基金：

中国国家自然科学基金;

关键词：

free piston Stirling engine; linear dynamic model; root locus technique; performance prediction; parametric optimization; FREQUENCY; DESIGN;

D O I：

10.2298/TSCI230709232L

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The free piston Stirling engine is a complex system with multiple parameters strongly coupled. In this study, linear dynamic model and root locus technique are combined to investigate a gamma-type free piston Stirling engine. Firstly, brief expressions are derived to predict the operating frequency, f, phase angle, phi, amplitude ratio, eta, and output power of gamma-type free piston Stirling engine using linear dynamic model. The dynamic parameters are analyzed in detail to reveal their influence on the output performance of the system. Meanwhile, the starting conditions are obtained by root locus technique. Combining the results of the aforementioned two methods, a set of optimized design parameters is identified. The optimum values of f, phi, eta, and output power are 74.82 Hz, 65.38 degrees, 1.92 W, and 108 W, respectively. Further more, a 60 W gamma-type free piston Stirling engine prototype is developed and tested to validate the current model. Compared with the predicted results, the relative errors are less than 4.0% for f, less than 5.0% for phi, less than 2.0% for eta, and less than 10.0% for output power. This research provides a reliable approach the

引用

页码：269 / 281

页数：13

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