振動流用熱交換器の性能評価

抄録

Heat exchangers are some of the most important parts in thermoacoustic devices. In oscillatory flow condition, the flow and temperature fields around the heat exchangers are quite complex and it may significantly affect their heat transfer behavior. As a result, we cannot directly apply the heat transfer definition for a steady flow to the design of heat exchangers operating in oscillatory flow conditions. Moreover, the fundamental knowledge of heat transfer in oscillatory flow is still not well established. By measuring the heat transfer between the heat exchangers and working fluid in oscillatory flow, we define evaluation index of heat transfer performance. We confirm that incorporating the device improve performance.