Heat Transfer and Phase Change Materials for Thermal Energy Storage and Thermal Management Applications

用于热能存储和热管理应用的传热和相变材料

• 批准号: RGPIN-2015-03940
• 负责人: Duan, Xili
• 金额: $ 1.6万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638408
• 关键词: Heat; Transfer; Phase; Change; Materials

Storage of thermal energy from sustainable energy sources (e.g., solar) or recovery of waste heat in industrial processes has great importance in a world facing challenges of growing energy demand and climate change. Also, effective thermal management is critical for the improvement of efficiency and reliability of many energy systems, such as steam and gas turbines, nuclear reactors, and subsea pipelines in offshore oil and gas production systems. With a high latent heat of fusion, a phase change material (PCM) can absorb (or release) significant amounts of thermal energy during melting (or solidification) processes while it maintains a nearly constant temperature. These features make PCMs attractive in thermal energy storage and thermal management systems. However, the practical applications of PCMs have been limited due to the low thermal conductivity and subcooling problems.

在面临日益增长的能源需求和气候变化挑战的世界上，储存来自可持续能源（例如太阳能）的热能或回收工业过程中的废热具有重要意义。此外，有效的热管理对于提高许多能源系统的效率和可靠性至关重要，例如蒸汽和燃气轮机、核反应堆以及海上油气生产系统中的海底管道。由于具有较高的熔合潜热，相变材料（PCM）可以在熔化（或凝固）过程中吸收（或释放）大量的热能，同时保持近乎恒定的温度。这些特点使pcm在热能储存和热管理系统中具有吸引力。然而，由于低导热系数和过冷问题，PCMs的实际应用受到了限制。