気泡駆動型非ループ熱輸送デバイスの熱輸送特性(熱工学,内燃機関,動力など)
気泡駆動型非ループ熱輸送デバイスの熱輸送特性(熱工学,内燃機関,動力など)
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气泡驱动非环路热传输装置（热工、内燃机、电力等）的热传输特性
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
敦子 鈴木
中科院分区：
文献类型：
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作者：
敦子 鈴木
实验测量了一种气泡驱动非回路传热装置的传热特性。该装置由一个无环曲折的铜管含有水。管的内径足够小以允许在管中形成蒸气和液体塞。稳态时，大部分管壁温度呈周期性波动。这些波动具有特定的峰值频率，当热传输速率从150 W增加到250 W时，其从1.3 Hz增加到2.0 Hz。该装置的时间平均温度梯度几乎是恒定的，类似于金属棒的热传导模式的情况。器件的有效导热系数与热传输速率成正比，但不依赖于重力效应。这些结果表明，该设备是由振荡引起的热传输。
The heat-transport characteristics of a bubble-driven non-looped heat-transport device were experimentally measured. The device consists of a non-looped meandering copper tube containing water. The inner diameter of the tube is sufficiently small to allow the formation of vapor and liquid plugs in the tube. At steady state, most of the measured wall temperatures on the tube surface fluctuated periodically. These fluctuations had specific peak frequencies, which increased from 1.3 to 2.0 Hz when the heat-transport rate increased from 150 to 250 W. Time-averaged temperature gradients of the device were almost constant and similar to the case of the heat-conduction mode of a metallic rod. The effective thermal conductivity of the device is proportional to the heat-transport rate but does not depend on the gravity effect. These results indicate that the device is governed by oscillation-induced heat transport.