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首页> 外文会议>Conference on Commercial/Civil Next Generation Space Transportation >A Self-Circulating Heat Exchanger for Use in Stirling and Thermoacoustic-Stirling Engines
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A Self-Circulating Heat Exchanger for Use in Stirling and Thermoacoustic-Stirling Engines

机译：一种用于斯特林和热声斯特林发动机的自循环热交换器

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摘要

A major technical hurdle to the implementation of large Stirling engines or thermoacoustic engines is the reliability, performance, and manufacturability of the hot heat exchanger that brings high-temperature heat into the engine. Unlike power conversion devices that utilize steady flow, the oscillatory nature of the flow in Stirling and thermoacoustic engines restricts the length of a traditional hot heat exchanger to a peak-to-peak gas displacement, which is usually around 0.2 meters or less. To overcome this restriction, a new hot heat exchanger has been devised that uses a fluid diode in a looped pipe, which is resonantly driven by the oscillating gas pressure in the engine itself, to circulate the engine's working fluid around the loop. Instead of thousands of short, intricately interwoven passages that must be individually sealed, this new design consists of a few pipes that are typically 10 meters long. This revolutionary approach eliminates thousands of hermetic joints, pumps the engine's working fluid to and from a remote heat source without using moving parts, and does so without compromising on heat transfer surface area. Test data on a prototype loop integrated with a 1-kW thermoacoustic engine will be presented.
机译：大型斯特林发动机或热声发动机实施的主要技术障碍是热换热器的可靠性，性能和可制造性，使高温热量带入发动机。与利用稳定流动的电力转换装置不同，斯特林和热声发动机的流动的振荡性质将传统热换热器的长度限制在峰 - 峰值气体位移中，这通常约为0.2米或更小。为了克服这种限制，已经设计了一种新的热换热器，其使用在环路管中的流体二极管，其被发动机本身中的振荡气体压力谐振，以循环绕环缠绕的发动机的工作流体。而不是必须单独密封的数千个短，错综复杂的交织通道，这款新设计包括一些通常10米长的管道。这种革命性方法消除了数千个密封接头，将发动机的工作流体泵送到远程热源而不使用移动部件，并且在不损害传热表面积的情况下这样做。将介绍与1 kW热声发动机集成的原型环上的测试数据。

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