A reciprocating magnetic refrigerator was developed based on the active magneticregeneration technology. Rare earth metal Gd and intermetallic compound LaFe11.2Co0.7Si1.1 were used as the magnetic operating materials in the machine. The particles of the magnetic operating materials, with diameter of 0.5- 2 mm and total mass of 950 g, were mounted in the cooling bed. A magnetic field was assembled using NdFeB rare earth permanent magnets. It had the magneticfield space of Φ 34×200 and the magnetic induction of 1.5 T. The water at pH=10 is used as a heat transfer fluid. When the ambient temperature is 296 K, a temperature span of 18 K was achieved after operation of 45 min at a frequency of 0.178 Hz. The temperature span and the output power increase significantly with the increasing velocity of heat transfer.
参考文献
| [1] | Brown G V .Magnetic heat pumping near room temperature[J].Journal of Applied Physics,1976,47(08):3673. |
| [2] | Zimm C;Jastrab A;Sternberg A et al.Description and performance of a near-room temperature magnetic refrigerator[J].Advances in Cryogenic Engineering,1998,43:1759. |
| [3] | Okamura T;Yamada K;Hirano N.Performance of a room-temperature rotary magnetic refrigerator[A].Switzerland,2005:319. |
| [4] | Li Peng;Yao Guanhui;Gong Maoqiong et al.Experimental researchon the near-room temperature magnetic refrigerator adopting the permanent magnets[J].RARE METALS,2005,29(04):587. |
| [5] | Lee SJ.;Kenkel JM.;Pecharsky VK.;Jiles DC. .Permanent magnet array for the magnetic refrigerator[J].Journal of Applied Physics,2002(10 Pt.3):8894-8896. |
| [6] | Huang Jiaohong;Zhang Jiuxing;Xu Laizi.Design of the magnetic field provided by the permanent magnets[M]. |
| [7] | DeGregoria A J .Modeling the active magnetic regenerator[J].Advances In Cryogenic Engineering,1992,37(B):867. |
| [8] | 张泽玉,龙毅,叶荣昌,常永勤,万发荣.缓蚀剂对金属钆在水介质中腐蚀行为的影响[J].中国稀土学报,2005(04):400-404. |
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