Volume 17, Issue 10 (1-2018)
Modares Mechanical Engineering 2018, 17(10): 341-349 |
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Najafi Amel A, Kouravand S, Zarafshan P, Kermani A M, khashechi M. Optimization of Alpha Type Stirling Engine Phase Angle with Step-By-Step Simulation Method. Modares Mechanical Engineering 2018; 17 (10) :341-349
URL: http://mme.modares.ac.ir/article-15-12383-en.html
URL: http://mme.modares.ac.ir/article-15-12383-en.html
Alireza Najafi Amel1 
, Shahriar Kouravand * , Payam Zarafshan2 , Ali Mashaallah Kermani3 , Morteza Khashechi4
, Shahriar Kouravand * , Payam Zarafshan2 , Ali Mashaallah Kermani3 , Morteza Khashechi4
1- Department of Agrotechnology, Aburaihan Campus, University of Tehran, Tehran, Iran
2- University of Tehran
3- Agrotechnology department, University of Tehran
4- agrotechnology dep., university of tehran
2- University of Tehran
3- Agrotechnology department, University of Tehran
4- agrotechnology dep., university of tehran
Abstract: (4564 Views)
In this paper, optimization phase angle of alpha Stirling engine performed step by step method. After studying on the operation of various types of Stirling engines, the effect of the phase angle on the power and efficiency of Alpha Stirling engines was studied. The kinematic modeling of volumetric compression and expansion volumes has been done by ADAMS software. Then, the linearization of the thermodynamic equations was carried out on the basis of analysis of the isothermal and five-volume adiabatic stirling cycles to obtain the initial solution of its effective parameters on the power and efficiency. To optimize the phase angle between compression and expansion pistons, stepwise numerical solution of the stirling cycle was performed. Comparison of numerical solution with experimental data indicates an error rate of less than 5.3%. The simulation results show the optimum phase angle of 103 °. At this optimal angle, the results indicate an increase of 4.8% of the output power rather than the output power at a 90 ° pre-aligned angle. Simulation results indicate an improvement of 1.2% of the Alpha Stirling engine efficiency by adjusting this phase priority angle to the efficiency at 90 °.
Keywords: Step by Step method, alpha Stirling engine, phase angle, isothermal analysis, five-volume adiabatic analysis
Article Type: Research Article |
Subject:
Thermodynamics
Received: 2017/07/22 | Accepted: 2017/10/2 | Published: 2017/12/22
Received: 2017/07/22 | Accepted: 2017/10/2 | Published: 2017/12/22
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