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刘敏 俞炳丰 杨德玺

(西安交通大学能源与动力工程学院 西安 710049)

制冷学报 .-2008，29（4）.－13～17 

    摘 要：在往复式活性蓄冷器实验系统的基础上设计开发了圆柱型活性蓄冷器，并对管路流程进行了优化。以金属钆为磁性工质，实验研究了蓄冷器的热力性能，获得了蓄冷器内温度分布及制冷性能数据。实验结果表明：在不同温度区间、温跨、换热流体流量及流动时间的条件下，蓄冷器存在最佳单向流动时间与最佳换热流体流量；系统在3 K的温跨下可获得11.35 W的最大制冷量；蓄冷器的制冷量和COP随温跨与温区的增加而减小。

    关键词：热工学；室温磁制冷；活性蓄冷器；板式换热器；制冷性能；温度区间；温度跨度

Experimental study on refrigeration performance of cylinder active magnetic regenerator of room temperature magnetic refrigeration
LIU Min, YU B F, YANG D X
School of Power and Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Abstract A cylinder active magnetic regenerator for room temperature magnetic refrigeration was designed on the basis of the existing reciprocating active magnetic regenerator system, and its flow circuitry was optimized. Experimental investigation on thermodynamics performance of the cylinder active magnetic regenerator was conducted with the magnetic material, Gd. Temperature distribution in AMR and corresponding refrigeration performance data were obtained considering the influence of temperature range, temperature span, flow rate and flow time. The results indicate that optimal flow time and optimal flow rate for AMR existed in different experimental regions; the refrigeration capacity reached 11.35W at a 3K temperature span; the refrigeration capacity and COP decreased with the increase of temperature range and temperature span. 14 Refs. In Chinese.

Keywords Pyrology; Room temperature magnetic refrigeration; Active magnetic regenerator; Plate type heat exchanger; Refrigeration performance; Temperature range; Temperature span