室温磁制冷机性能评测及能效分析

doi:10.3969/j.issn.0438-1157.2014.09.047

化工学报 ›› 2014, Vol. 65 ›› Issue (9): 3654-3660.DOI: 10.3969/j.issn.0438-1157.2014.09.047

室温磁制冷机性能评测及能效分析

刘超鹏¹, 巫江虹¹, 黄一鹤¹, 唐永柏²

1 华南理工大学机械与汽车工程学院, 广东广州 510640;
2 四川大学材料与科学工程学院, 四川成都 610064

收稿日期:2013-12-05 修回日期:2014-04-28 出版日期:2014-09-05 发布日期:2014-09-05
通讯作者: 巫江虹
基金资助:
国家自然科学基金项目（51176050）。

Performance evaluation and energy efficiency analysis for magnetic refrigeration near room temperature

LIU Chaopeng¹, WU Jianghong¹, HUANG Yihe¹, TANG Yongbai²

1 School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China;
2 College of Materials Science and Engineering, Sichuan University, Chengdu 610064, Sichuan, China

Received:2013-12-05 Revised:2014-04-28 Online:2014-09-05 Published:2014-09-05
Supported by:
supported by the National Natural Science Foundation of China (51176050).

摘要/Abstract

摘要： 为建立磁制冷机能效统一评价指标，弥补采用温跨和制冷量作为磁制冷系统性能评价标准的不足，在现有评价方法的基础上提出了新的室温磁制冷样机能效指标-(火用)效率。为了验证新评价指标的可行性，分别对2011年维多利亚大学公布的样机数据和2012年丹麦理工大学公布的样机数据进行分析计算，将以温跨-热源温度和温跨-制冷量形式给出的测试数据统一转换为温跨-冷量(火用)的形式，以实现对不同样机的能效进行客观评价；同时搭建测试平台对四川大学旋转式室温磁制冷样机在25、27及30℃工况下进行冷量(火用)、(火用)效率指标测试。实验结果表明，该室温磁制冷样机在25℃工况下，磁制冷机转速6 r·min^-1时，制冷量为240 W，最大冷量(火用)为3.26 W。在剔除电机损失、机械损失、磁滞损失及涡流损失等因素的影响后，最大(火用)效率为0.039。

关键词: 磁制冷, (火用), 能效评价, 传热, 实验验证

Abstract: A novel energy efficiency evaluation index, exergetic efficiency, was proposed to evaluate the performance of magnetic refrigerator rationally and compensate for the limitation in evaluating magnetic refrigerator system with available two indexes, temperature span and cooling capacity. To testify the feasibility of exergetic efficiency evaluation indexes, the experimental data by University of Victoria in the form of temperature span-heat source temperature curve and experimental data by Technical University of Denmark in the form of temperature span-cooling capacity curve were converted to the temperature span-exergetic cooling capacities. Furthermore an experimental platform was established based on Sichuan University magnetic refrigerator prototype. With the heat source temperature controlled at 25, 27 and 30℃, performance parameters of refrigerator such as cooling capacity, temperature span, cooling exergy and exergetic efficiency were obtained. Experimental results indicated that the cooling capacity of the magnetic refrigerator prototype could reach 240 W and its maximum cooling exergy was 3.26 W at heat source temperature 30℃ and 6 r·min^-1. With the efficiencies of motor loss, mechanical loss, hysteretic loss and eddy current loss ignored, the peak exergetic efficiency was 0.039.

Key words: magnetic refrigeration, exergy, energy efficiency evaluation, heat transfer, experimental validation

中图分类号:

刘超鹏, 巫江虹, 黄一鹤, 唐永柏. 室温磁制冷机性能评测及能效分析[J]. 化工学报, 2014, 65(9): 3654-3660.

LIU Chaopeng, WU Jianghong, HUANG Yihe, TANG Yongbai. Performance evaluation and energy efficiency analysis for magnetic refrigeration near room temperature[J]. CIESC Journal, 2014, 65(9): 3654-3660.

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室温磁制冷机性能评测及能效分析

Performance evaluation and energy efficiency analysis for magnetic refrigeration near room temperature

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