相变
相变材料
散热片
无线
功率(物理)
环境科学
材料科学
电气工程
计算机科学
工程物理
工程类
电信
热力学
物理
作者
Mahdi Ghorbani,Hailei Wang,Nicholas A. Roberts
标识
DOI:10.1016/j.icheatmasstransfer.2024.107460
摘要
With the growing need of electrifying the transportation industry, high-power electric vehicle (EV) charging stations will play an instrumental role. This study focuses on passive thermal management designs using phase change materials (PCM) to transfer 1 MW of electrical power to heavy-duty vehicles within a 35-min timeframe. Various heat sink configurations and hybrid PCM are numerically investigated for effective heat dissipation during charging. Integration of a three-type hybrid PCM with a heat sink results in a 7.3% reduction in final surface temperature compared to a single PCM integrated with a heat sink. Using diverse PCMs, especially in a Hybrid PCM system with multiple melting points, offers superior surface temperature control. Furthermore, a 1D transient analytical model is developed for PCM-only design, which presents a baseline performance and is used to validate the corresponding numerical model. In this model, similarity method is utilized under two distinct boundary conditions, i.e., constant temperature, and heat flux conditions. Comparative assessment with corresponding numerical model reveals minimal surface temperature differences of 0.47% and 0.66% for constant temperature and heat flux cases, respectively. It provides valuable insights into passive thermal management systems using PCMs as potential solutions to high-power EV charging systems.
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