Enhanced thermodynamic modelling of a gamma-type Stirling engine

被引:41
作者
Alfarawi, S. [1 ]
AL-Dadah, R. [1 ]
Mahmoud, S. [1 ]
机构
[1] Univ Birmingham, Dept Mech Engn, Birmingham B15 2TT, W Midlands, England
基金
英国工程与自然科学研究理事会;
关键词
Enhanced; Thermodynamic; Modelling; Simulation; Gamma-type; Stirling engine; THERMAL-MODEL; OPTIMIZATION; PERFORMANCE; DESIGN;
D O I
10.1016/j.applthermaleng.2016.06.145
中图分类号
O414.1 [热力学];
学科分类号
摘要
Modelling can substantially contribute to the development of Stirling engines technology and help understanding the fundamental processes of the real cycle for further performance improvement. In the present work, an enhanced thermodynamic model for Gamma-type Stirling engine simulation was developed based on the reconfiguration of non-ideal adiabatic analysis. The developed model was validated against experimental measurements on Stirling engine prototype (ST05 CNC), available at University of Birmingham. Good agreement was found between the model and experiment in predicting the indicated power, shaft power and thermal efficiency at different operating conditions. A parametric study was carried out to investigate the effect of phase angle, gas type, regenerator matrix type and dead volume on engine performance. The feasibility of utilizing the stored cold energy of LN2 to maximize the shaft power was also presented. Results showed that shaft power can be significantly enhanced by 49% for helium and 35% for nitrogen when cooling temperature is lowered to -50 degrees C while heating temperature remains constant at 650 degrees C. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1380 / 1390
页数:11
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