| 摘要: |
| 建立磁性纳米制冷剂Fe3O4-R600a冷却回路的热磁对流特性实验系统，研究了磁场分布、磁场强度、加热功率、冷却温度等对热磁对流特性的影响。结果表明：外磁场对磁性纳米流体热磁对流过程的影响非常明显，可无须机械泵驱动而实现能量的自主传递过程，冷却回路中的磁流体循环流动和传热性能取决于外磁场与温度的协同作用，应用外磁场有效可控制冷却回路的运行特性。 |
| 关键词: 制冷剂 冷却 磁场 热磁对流 |
| DOI： |
|
|
| 基金项目:国家自然科学基金（51246006）资助项目。 |
|
| Study on Thermomagnetic Convection Characteristics of a Cooling Device Using Magnetic Nano-refrigerant |
|
Wu Zhijiang1,2, Yin Shaoyou1,2
|
| (1.College of Mechanical and Electrical Engineering, Shunde Polytechnic;2.Guangdong University Heat Pump Engineering Technology Development Center) |
| Abstract: |
| The experimental system of a cooling device using Fe3O4-R600a as magnetic nano-refrigerant was built up. And the influences of magnetic field distribution, magnetic field intensity, heat load, cooling temperature were discussed. The results show that the effect of the device was improved obviously by external magnetic field, and the heat was transferred by the circulating fluid without a pump. On the meantime, synergic function between the external magnetic field and the thermal field has impact on the velocity of the working fluid and the cooling performance of the device. Using external magnetic field, the cooling performance of the device also can be effectively controlled. |
| Key words: refrigerant cooling magnetic field thermomagnetic convection |
