A combined thermodynamic cycle used for waste heat recovery of internal combustion engine |
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| Authors: | Maogang He Xinxin Zhang Ke Zeng Ke Gao |
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| Affiliation: | 1. MOE Key Laboratory of Thermo-Fluid Science and Engineering, School of Energy and Power Engineering, Xi''an Jiaotong University, No. 28, Xianning West Road, Xi''an, Shaanxi 710049, PR China;2. State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi''an Jiaotong University, Xi''an, Shaanxi 710049, PR China;1. Sir Joseph Swan Centre for Energy Research, School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;2. Marine, Offshore and Subsea Technology, School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2. School of Mechanical and Automotive Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei, China;3. Department of Mechanical Engineering Sciences, University of Surrey, Guildford GU2 7HX, UK;1. Department of Mechanical Engineering, Technical University of Denmark, Building 403, Nils Koppels Allé, 2800 Kgs. Lyngby, Denmark;2. Chalmers University of Technology, Maritime Operations, SE-412 96 Gothenburg, Sweden;1. Mechanical Engineering Department, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal;2. School of Technology and Management, Polytechnic Institute of Leiria, Morro do Lena – Alto Vieiro Apt. 4163, 2411-901 Leiria, Portugal |
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| Abstract: | In this paper, we present a steady-state experiment, energy balance and exergy analysis of exhaust gas in order to improve the recovery of the waste heat of an internal combustion engine (ICE). Considering the different characteristics of the waste heat of exhaust gas, cooling water, and lubricant, a combined thermodynamic cycle for waste heat recovery of ICE is proposed. This combined thermodynamic cycle consists of two cycles: the organic Rankine cycle (ORC), for recovering the waste heat of lubricant and high-temperature exhaust gas, and the Kalina cycle, for recovering the waste heat of low-temperature cooling water. Based on Peng–Robinson (PR) equation of state (EOS), the thermodynamic parameters in the high-temperature ORC were calculated and determined via an in-house computer program. Suitable working fluids used in high-temperature ORC are proposed and the performance of this combined thermodynamic cycle is analyzed. Compared with the traditional cycle configuration, more waste heat can be recovered by the combined cycle introduced in this paper. |
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