Thermodynamic evaluation of a second order simulation for Yoke Ross Stirling engine
Thermodynamic evaluation of a second order simulation for Yoke Ross Stirling engine
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DOI：
10.1016/j.enconman.2013.01.005
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发表时间：
2013-04
影响因子：
10.4
通讯作者：
I. Tlili;Saed A. Musmar
中科院分区：
文献类型：
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作者：
I. Tlili;Saed A. Musmar
煤炭、oïl和天然气等矿物资源的环境影响和枯竭促使人们重新审查这些资源的替代品。除了温室气体排放及其与气候变化的关系外，安全可持续的能源途径对可持续发展至关重要，这是寻找节能环保战略的主要因素。目前，太阳能热发动机引起了人们的广泛关注，因此，人们研究了不同的斯特林发动机与太阳能集热器耦合，以满足有效利用能源和确保环境安全的要求。近年来研制了几种太阳能斯特林发动机样机和实验装置。这种发电方式未来的商业利益取决于投资成本的降低和性能的提高。斯特林热机于1816年由罗伯特·斯特林首次获得专利。从那时起，几个基于他的发明的斯特林发动机已经建成了许多形式和大小。发动机以闭式循环工作，并使用几种气体作为工作液。几个原型已经被研究和生产，但是使用罗斯轭连杆的α斯特林发动机还没有得到很好的研究，尽管这种发动机具有将作用在活塞上的侧向力降到最低的优势，并且与β或γ斯特林配置相比，它的设计更高效、更紧凑。本研究的目的是研究几何参数和物理参数对罗斯约克斯特林发动机性能的影响，以确定对发动机性能有影响的重要热力学参数。基于内部不可逆性和外部不可逆性相结合的数值模型，对罗斯轭式斯特林发动机进行了热力学优化。结果表明，以空气为工作气体的罗斯轭斯特灵循环发动机的性能主要取决于几何参数和热量输入。
Environmental impact and depletion of mineral resources such as coal, oïl and gas are prompting a reexamination of an alternative to these resources. A safe and sustainable energy pathway which is crucial to sustainable development in addition to greenhouse gas emitters and its relationship with climate change are leading factors to look for adequate strategies concerning both energy saving and environmental protection. Solar heat engines are attracting much interest nowadays and, as a consequence, different Stirling engine coupled to solar collector have been investigated since it meets the demands of the efficient use of energy and assuring environmental security. In recent years several prototypes and experimental facilities of solar Stirling engine have been developed. The future commercial interest of this alternative for electric power generation relies on a reduction of investment costs and on an increase of performance. The Stirling heat engine was first patented in 1816 by Robert Stirling. Since then, several Stirling engines based on his invention have been built in many forms and sizes. The engine works with a closed cycle and uses several gases as working fluid. Several prototypes have already been studied and produced but the alpha Stirling engine using the Ross Yoke linkage was not well studied although this kind of engine has the advantage of minimizing lateral forces acting on the pistons and leading to a more efficient and compact design compared to beta or gamma Stirling configuration, The objective of this work was the study of the effect of the geometrical and physical parameters on Ross Yoke Stirling engine performance in order to determine the significant thermodynamic parameters having an impact on engine performance. We proposed thermodynamic optimization of a Ross Yoke Stirling engine on the basis of a numerical model integrating the internal and external irreversibility. As a result, this analysis indicated that the performance of a Ross Yoke Stirling cycle engine with air as working gas depends critically on the geometrical parameters and heat input.