Magnetic cycles for heat pumping and power generation

用于热泵和发电的磁循环

• 批准号: 261419-2013
• 负责人: Rowe, AndrewMichael
• 金额: $ 1.89万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571029
• 关键词: Magnetic; cycles; heat; pumping; power

The objective of the research program is the development of energy conversion devices using magnetic cycles. Magnetocaloric devices are reversible heat engines utilizing magnetic ordering to effect work and heat transfer. They can be used for refrigeration, heat pumping, and to generate power. The potential for increased efficiency comes from highly reversible work transfer coupled with inherent work recovery. The use of solid working materials and environmentally benign heat transfer fluids ensures that the production and release of GHG and ozone depleting substances are minimized. The ability to generate work provides a new approach to power generation from low-grade sources including solar, biomass, and waste-heat. Magnetic regenerators near room temperature are somewhat unique in their use of oscillating liquid heat transfer fluids. Large power densities are desired so as to minimize capital costs, thus, high operating frequencies are beneficial. High efficiencies require optimal distribution of magnetic work throughout the regenerator. One of the main challenges in magnetic regenerator design is determining the type and quantity of magnetocaloric material. The proposed research program will use a full range of methods including thermodynamic modeling and experimental characterization to optimize regenerator composition. The potential applications of magnetic cycles are numerous and may lead to new technologies for improved delivery of energy services. Furthermore, the promise of increased performance over existing technologies aligns with sustainability goals. The multi-disciplinary nature of the topic creates a rich environment for innovation and training of highly qualified personnel. Students and research associates will develop strong analytic skills and in-depth knowledge of thermofluids, material science, and applied magnetism - skills needed wherever technical innovation is desired.

研究计划的目标是开发利用磁循环的能量转换装置。磁致热装置是可逆的热机，利用磁排序来实现功和热传递。它们可以用于制冷、热泵和发电。提高效率的潜力来自于高度可逆的功传递以及固有的功恢复。使用固体工作材料和对环境无害的传热流体可确保最大限度地减少温室气体和消耗臭氧层物质的产生和释放。这种发电能力为利用太阳能、生物质能和废热等低品位资源发电提供了一种新途径。