کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
761727 | 1462909 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A thermoacoustic engine capable of utilizing multi-temperature heat sources A thermoacoustic engine capable of utilizing multi-temperature heat sources](/preview/png/761727.png)
Low-grade energy is widespread. However, it cannot be utilized with high thermal efficiency directly. Following the principle of thermal energy cascade utilization, a thermoacoustic engine (TE) with a new regenerator that can be driven by multiple heat sources at different temperature levels is proposed. Taking a regenerator that utilizes heat sources at two temperatures as an example, theoretical research has been conducted on a traveling-wave TE with the new regenerator to predict its performance. Experimental verification is also done to demonstrate the benefits of the new regenerator. Results indicate that a TE with the new regenerator utilizing additional heat at a lower temperature experiences an increase in pressure ratio, acoustic power, efficiency, and exergy efficiency with proper heat input at an appropriate temperature at the mid-heater. A regenerator that uses multi-temperature heat sources can provide a means of recovering lower grade heat.
Journal: Energy Conversion and Management - Volume 50, Issue 12, December 2009, Pages 3187–3192