Electromagnetic induction by ferrofluid in an oscillating heat pipe
Electromagnetic induction by ferrofluid in an oscillating heat pipe
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DOI：
10.1063/1.4923400
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发表时间：
2015-06
影响因子：
4
通讯作者：
J. Monroe;E. S. Vasquez;Zachary Aspin;K. Walters;M. Berg;S. Thompson
中科院分区：
文献类型：
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作者：
J. Monroe;E. S. Vasquez;Zachary Aspin;K. Walters;M. Berg;S. Thompson
利用振荡热管（OHP）实现了热能-电能的转换，该振荡热管中填充有铁磁流体并配有环形螺线管。OHP经受100 °C的轴向温差，允许铁磁流体被动地振荡通过螺线管，从而实现电磁感应。测量的螺线管电压由非周期性脉冲组成，主频率在2和5 Hz之间，峰-峰幅度接近1 mV。尽管暴露于OHP内的热循环和相变循环，铁磁流体的纳米颗粒形态和磁性能保持完整。这种能量收集方法允许结合热管理和原位发电。
Thermal-to-electrical energy conversion was demonstrated using an oscillating heat pipe (OHP) filled with ferrofluid and equipped with an annular-type solenoid. The OHP was subjected to a 100 °C axial temperature difference allowing the ferrofluid to passively oscillate through the solenoid, thus accomplishing electromagnetic induction. The measured solenoid voltage consisted of aperiodic pulses with dominant frequencies between 2 and 5 Hz and peak-to-peak amplitudes approaching 1 mV. Despite exposure to the thermal and phase change cycling within the OHP, nanoparticle morphologies and magnetic properties of the ferrofluid remained intact. This energy harvesting method allows for combined thermal management and in-situ power generation.