Experimental research on thermal characteristics of PCM thermal energy storage units |
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| Affiliation: | 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, 130025, Changchun, China;2. College of Automotive Engineering, Jilin University, 130025, Changchun, China;1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;2. College of Automotive Engineering, Jilin University, Changchun 130025, China;1. Department of Mechanical Engineering, The University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA;2. School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong, 518055, China;1. Department of Chemical Engineering, College of Engineering, University of Diyala, 32001 Diyala, Iraq;2. Department of Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, UK;1. State Key Laboratory of Automotive Simulation and Control, Jilin University, 130025 Changchun, China;2. College of Automotive Engineering, Jilin University, 130025 Changchun, China;1. Department of Energy Engineering, University of Baghdad, Baghdad, Iraq;2. Department of Physics, College of Education, University of Garmian, Kurdistan, Iraq;3. Faculty of Engineering, the University of Nottingham, Nottingham, United Kingdom;4. Department of Mechanical Engineering and Energy Processes, Southern Illinois University, Carbondale, IL, USA |
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| Abstract: | To explore thermal management integration in electric vehicles (EVs), a phase change materials (PCMs) thermal energy storage unit using flat tubes and corrugated fins is designed. The investigation focuses on the thermal characteristics of the PCM unit, such as the temperature variation, heat capacity, and heat transfer time, etc. Meanwhile, the heat storage and release process will be influenced by different inlet temperature, liquid flow rate, melting point of the PCM, and the combination order of the units. Under the same inlet temperature and flow rate condition, the PCM unit with higher melting point enters the latent heat storage stage slowly and enters the phase change melting release stage quickly. Furthermore, the heat storage and release rates increase with increasing liquid flow rates, but the effects are diminishing in the middle and later periods. The multiple PCM units with different melting temperatures are cascaded to help recycle low-grade heat energy with different temperature classes and exhibit well heat storage and release rates. |
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| Keywords: | Thermal energy storage unit Phase change material Multiple melting points Thermal characteristics |
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