Improved design tools for thermosyphon based thermal management systems

改进的基于热虹吸管的热管理系统的设计工具

• 批准号: 516464-2017
• 负责人: Ching, Chan
• 金额: $ 7.29万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=647563
• 关键词: Improved; design; tools; thermosyphon; based

The overall objective of this project, in collaboration with Mersen Canada, is to develop engineering design**tools for thermosyphon based thermal management systems. Thermosyphons are passive two phase heat**transport devices; evaporating a working fluid in heated regions and condensing it in cooled regions, to transfer**heat with very small thermal resistance. Mersen Canada designs and develops thermal management systems**that use thermosyphons for high power electrical systems. The systems typically consist of heat spreaders that**are attached to the heat source (electrical system), thermosyphons that transfer the heat from the spreader to the**condenser end and a heat exchanger that rejects the heat from the condenser end to the ambient. One challenge**in any new thermal management system design is characterizing and predicting the performance of the**thermosyphons under the given operating conditions. Another important consideration is understanding the**factors that cause failure of the thermosyphons. A major drawback in the current design methodologies is the**lack of reliable engineering models, especially for the types of thermosyphons that Mersen currently uses in**their thermal management systems. This is further exacerbated since many of Mersen's applications are at high**heat flux and/or under extreme environmental conditions. In this project, mechanistic models for the types of**thermosyphons that Mersen uses will be developed. Experiments will be performed to characterize the**performance of the thermosyphons and validate the models. In addition, methods will be developed to improve**the performance of the heat spreaders to reduce the effect of hot spots due to local heat generation from the**electrical systems. Computational models will be developed to simulate the heat transfer characteristics of the**large scale natural convection heat exchangers used on the condenser of the thermal management systems.

该项目的总体目标是与美尔森加拿大公司合作，开发基于热虹吸管的热管理系统的工程设计**工具。热虹吸管是无源两相热**传输装置；工作流体在加热区域蒸发并在冷却区域冷凝，以很小的热阻传递热量。美尔森加拿大公司设计和开发热管理系统**，该系统将热虹吸管用于高功率电气系统。该系统通常由连接到热源（电气系统）的散热器、将热量从散热器传递到**冷凝器端的热虹吸管以及将热量从冷凝器端排出到周围环境的热交换器组成。任何新热管理系统设计中的一项挑战**是在给定操作条件下表征和预测**热虹吸管的性能。另一个重要的考虑因素是了解导致热虹吸管故障的**因素。当前设计方法的一个主要缺点是**缺乏可靠的工程模型，特别是对于美尔森目前在**其热管理系统中使用的热虹吸管类型。由于美尔森的许多应用都处于高**热通量和/或极端环境条件下，这种情况进一​​步加剧。在该项目中，将开发美尔森使用的**热虹吸管类型的机械模型。将进行实验来表征热虹吸管的**性能并验证模型。此外，还将开发方法来提高**散热器的性能，以减少由于**电气系统局部发热而产生的热点影响。将开发计算模型来模拟热管理系统冷凝器上使用的**大型自然对流热交换器的传热特性。