Dynamic and energy analysis of a liquid piston hydrogen compressor |
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| Affiliation: | 1. School of Mechanical Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;3. Xi''an Key Laboratory of Intelligent Equipment and Control, Xi''an Jiaotong University, Xi''an 710049, China;4. College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technololgy, Xi''an, 710021, China;5. School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China;6. Chongqing Changfeng Chemical Industrial Co., Ltd, Chongqing, 401221, China;7. School of Mechanical Engineering, Shannxi University of Technology, Hanzhong 723001, China;1. School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, Liaoning, China;2. Graduate School, Liaoning Petrochemical University, Fushun 113001, Liaoning, China;3. Shanxi Normal University, Taiyuan 030000, Shanxi, China;1. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China;2. Institute of New Energy and Energy-Saving & Emission-Reduction Technology, Hunan University, Changsha 410082, China;1. Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh;2. Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh;3. Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh;4. Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USA |
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| Abstract: | Liquid piston compressor is the most promising compressor to be used for hydrogen-refueling stations. However, their energy transfer and the energy dissipation processes of are poorly studied and not well understood. In this paper, a new energy analysis method for an ionic-liquid type liquid piston compressor is proposed. In the compressor section, porous media is used to promote heat transfer from the hydraulic oil during the compression process. A mathematical model has been formulated considering the heat transfer and damping effects of the porous media on the compressor performance. Moreover, the compressibility of the hydraulic oil and its overflow loss on the compressor performance were also established. In the model, the seven stages of the entire working cycle of the compressor were look into in detail, alongside with its energy efficiency. The results show that the key parameters governing the energy efficiency of the compressor are the heat transfer efficiency of the compressor and the overflow losses of the hydraulic oil. |
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| Keywords: | Hydrogen energy Liquid piston compressor Energy analysis |
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