Modeling, design, and development of novel thermagoustic and therporaoustic systems

新型热声和热疗系统的建模、设计和开发

• 批准号: 402113-2011
• 负责人: Mahmud, Shohel
• 金额: $ 1.82万
• 依托单位: University of Guelph
• 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=573163
• 关键词: Modeling; design; development; novel; thermagoustic

Imagine a refrigerator that uses environmentally friendly gases instead of the current environmentally damaging CFCs (chlorofluorocarbons) and HFCs (hydrofluorocarbons). Imagine this refrigerator being so quiet that it cannot be heard. Further imagine that the costly compressor is replaced with a single moving part that makes the refrigerator inherently robust and reliable. Such a refrigerator exists and it utilizes thermoacoustics. A typical thermoacoustic engine utilizes a low grade heat source (e.g., waste heat and solar energy) and converts it to acoustic power. In contrast, a typical thermoacoustic refrigerator utilizes an acoustic source to produce a cooling effect. The catch is that thermoacoustic systems are currently inefficient, thus they have only found in niche applications such as in space or in environment friendly promotions by Ben and Jerry's Ice Cream. This research work proposes two novel branches of thermoacoustics, namely, thermagoustics (thermal-magnetic-acoustics) and therporaoustics (thermal-porous-acoustics) which represent major steps forward in the pursuit of more efficient thermoacoustic devices. In thermagoustics magnetic force controls thermoacoustic operation while in therporaoustics the acoustic sound waves travel through a porous medium to enhance thermoacoustic efficiencies. Thermagoustic and therporaoustic devices exhibit their potential application in several areas: electronic cooling (e.g., high frequency piezoelectric cooler), low-temperature applications (e.g., Stirling cryo-cooler), remote space applications (e.g., NASA's space shuttle), cryogenic applications (e.g., Thermoacoustic-Stirling system), refrigeration (e.g., solar powered thermoacoustic refrigerator), and hybrid systems (e.g., thermoelectric-thermoacoustic cooling systems) for vehicle applications. The outcomes of this research will lead to more efficient thermoacoustic device designs, thus aiding commercialization. Given the infancy of thermoacoustics and the potential consumer market, Canada has the potential to be a leader in the commercialization of this technology, especially if major efficiency breakthroughs are developed within Canada.

想象一下，使用环保气体而不是当前环境破坏的CFC（氯氟化碳）和HFC（Hyfluorocarbons）的冰箱。想象一下，这个冰箱是如此安静，以至于无法听到。进一步想象，昂贵的压缩机被单个移动零件取代，该部分使冰箱固有强大而可靠。这样的冰箱存在，并利用热声。典型的热声发动机利用低级热源（例如废热和太阳能），并将其转换为声电。相比之下，典型的热声冰箱利用声源产生冷却效果。捕获的是，热声系统目前效率低下，因此它们仅在Ben和Jerry's Ice Cream的诸如太空或环境友好促销中发现。 这项研究工作提出了两个新颖的热声学分支，即热门传播学（热磁性声学）和thrporaoustics（热孔声学），这代表了追求更有效的热声学设备的主要步骤。在热量磁力中，磁力控制热声操作，而在疗法中，声波通过多孔介质传播以提高热声效率。 Thermagoustic and therporaoustic devices exhibit their potential application in several areas: electronic cooling (e.g., high frequency piezoelectric cooler), low-temperature applications (e.g., Stirling cryo-cooler), remote space applications (e.g., NASA's space shuttle), cryogenic applications (e.g., Thermoacoustic-Stirling system), refrigeration (e.g., solar powered用于车辆应用的热声冰箱）和混合系统（例如热电 - 心血管冷却系统）。 这项研究的结果将导致更有效的热声设备设计，从而有助于商业化。鉴于热声学和潜在消费市场的起步阶段，加拿大有可能成为该技术商业化的领导者，尤其是在加拿大境内发展了重大效率突破的情况下。