期刊
APPLIED THERMAL ENGINEERING
卷 31, 期 8-9, 页码 1487-1494出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2011.01.033
关键词
Magnetic fluid; Thermomagnetic convection; Automatic energy transport; Electronic cooling
资金
- National Natural Science Foundation of China [50436020]
Liquid cooling for thermal management has been widely applied in electronic cooling. The use of mechanical pumps often leads to poor reliability, high energy consumption and other problems. This paper presents a practical design of liquid cooling system by mean of thermomagnetic effect of magnetic fluids. The effects of several structure and operation factors on the system performance are also discussed. Such a device utilizes an earth magnet and the waste heat generated from a chip or other sources to maintain the flow of working fluid which transfers heat to a far end for dissipation. In the present cooling device, no additional energy other than the waste heat dissipated is consumed for driving the cooling system and the device can be considered as completely self-powered. Application of such a cooling system to a hot chip results in an obvious temperature drop of the chip surface. As the heat load increases, a larger heat dissipation rate can be realized due to a stronger thermomagnetic convection, which indicates a self-regulating feature of such devices. (c) 2011 Elsevier Ltd. All rights reserved.
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