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

LIU Chaopeng; WU Jianghong; HUANG Yihe; TANG Yongbai

doi:10.3969/j.issn.0438-1157.2014.09.047

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

更新时间：2025-12-10

- Performance evaluation and energy efficiency analysis for magnetic refrigeration near room temperature
- CIESC Journal Issue 9, Pages: 3654-3660(2014)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.09.047
  CLC： K6
- Online First：05 September 2014，
  
  Published：05 September 2014
- 稿件说明：
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LIU Chaopeng, WU Jianghong, HUANG Yihe, et al. Performance evaluation and energy efficiency analysis for magnetic refrigeration near room temperature[J]. CIESC Journal, 2014, (9): 3654-3660.
DOI：

LIU Chaopeng, WU Jianghong, HUANG Yihe, et al. Performance evaluation and energy efficiency analysis for magnetic refrigeration near room temperature[J]. CIESC Journal, 2014, (9): 3654-3660. DOI： 10.3969/j.issn.0438-1157.2014.09.047.

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。

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.

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