Thermodynamic analysis of natural gas reciprocating compressors based on real and ideal gas models |
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| Affiliation: | 1. The Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran;2. Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran;1. School of Energy and Power Engineering, Xi?an Jiaotong University, Xi?an 710049, China;2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi?an Jiaotong University, Xi?an 710049, China;1. The Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran;2. Master Student of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran;3. The Faculty of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran;4. The Faculty of Mechanical Engineering, Khayym University of Mashhad, Mashhad, Iran;5. Industrial Advisor of Khorasanrazavi Gas Company, Mashhad, Iran;1. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, China;2. Quzhou Quality and Technical Supervision and Inspection Center, Quzhou, China;1. Bauman Moscow State Technical University, 2-nd Bauman Street, 5, 1, Moscow 105005, Russian Federation;2. Dukhov Research Institute of Automatics (VNIIA), Sushchevskaya Str. 22, Moscow 127055, Russian Federation;1. The Faculty of Mechanical Engineering, University of Birjand, Birjand, Iran;2. The Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran |
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| Abstract: | The accurate modelling and investigating effects of various parameters of the reciprocating compressors are important subjects. In this work, based on first law of thermodynamics, conversation of mass and real and ideal gas assumptions, a theoretical analysis has been constructed to simulate natural gas reciprocating compressors. For computing the thermodynamic properties of natural gas based on real gas model, the AGA8 equation of state has been used. Numerical results validated with previous measured values and showed a good agreement. The effects of important parameters such as: angular speed, clearance and pressure ratio have been studied on the performance of the compressors. The results reveal the in-control volume temperature for ideal gas is more than real gas model but the mass flow rate and work for real gas is higher than ideal gas model. On the other hand, the indicated work that required for compression is greater for ideal gas model. |
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| Keywords: | Reciprocating compressor Natural gas Thermodynamic modeling AGA8 equation of state Compresseur à piston Gaz naturel Modélisation thermodynamique Equation d'état AGA8 |
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