Thermoacoustically driven pulse tube refrigerator, a novel cryocooler without any moving components using heat energy as driving power, attracts much effortsfrom the researchers in the field of cryogenics and refriger...Thermoacoustically driven pulse tube refrigerator, a novel cryocooler without any moving components using heat energy as driving power, attracts much effortsfrom the researchers in the field of cryogenics and refrigeration in the past decades. After a short introduction of the history about thermoacoustics, we presented the key technology, followed by a detailed review on theoretical and experimental developments and advances of thermoacoustics.The prospective research emphases are also presented at the end of this review.展开更多
This paper focuses on the temperature and pressure characteristics of a Swift-Backhaus type traveling-wave thermoacoustic prime mover during its onset and damping processes,in order to understand the intrinsic mechani...This paper focuses on the temperature and pressure characteristics of a Swift-Backhaus type traveling-wave thermoacoustic prime mover during its onset and damping processes,in order to understand the intrinsic mechanism of thermoacoustic oscillation onset and the feasibility of using low-grade thermal energy based on a low onset temperature. The influences of heat input and filling pressure on hysteretic loop,due to the noncoincidence between onset and damping processes,are measured and analyzed. The condition for the occurrence of hysteresis is also briefly discussed.展开更多
Thermoacoustic phenomena had been discovered early in the history. The develop ment of the related theory and practice is especially vigorous in recent years. The developments of the theory and experiments of thermoac...Thermoacoustic phenomena had been discovered early in the history. The develop ment of the related theory and practice is especially vigorous in recent years. The developments of the theory and experiments of thermoacoustics and its state-of arts are reviewed from the point of view of an acoustician展开更多
文摘Thermoacoustically driven pulse tube refrigerator, a novel cryocooler without any moving components using heat energy as driving power, attracts much effortsfrom the researchers in the field of cryogenics and refrigeration in the past decades. After a short introduction of the history about thermoacoustics, we presented the key technology, followed by a detailed review on theoretical and experimental developments and advances of thermoacoustics.The prospective research emphases are also presented at the end of this review.
基金the National Natural Science Foundation of China (Nos. 50776075 and 50536040)the Natural ScienceFoundation of Zhejiang Province (No. Y107229), China
文摘This paper focuses on the temperature and pressure characteristics of a Swift-Backhaus type traveling-wave thermoacoustic prime mover during its onset and damping processes,in order to understand the intrinsic mechanism of thermoacoustic oscillation onset and the feasibility of using low-grade thermal energy based on a low onset temperature. The influences of heat input and filling pressure on hysteretic loop,due to the noncoincidence between onset and damping processes,are measured and analyzed. The condition for the occurrence of hysteresis is also briefly discussed.
文摘Thermoacoustic phenomena had been discovered early in the history. The develop ment of the related theory and practice is especially vigorous in recent years. The developments of the theory and experiments of thermoacoustics and its state-of arts are reviewed from the point of view of an acoustician
