化工学报 ›› 2021, Vol. 72 ›› Issue (S1): 178-183.DOI: 10.11949/0438-1157.20201600

• 流体力学与传递现象 • 上一篇    下一篇

串并联风冷冰箱性能优化

郝刚卫(),刘晔(),晏刚,鱼剑琳   

  1. 西安交通大学能源与动力工程学院,陕西 西安 710049
  • 收稿日期:2020-11-03 修回日期:2021-01-20 出版日期:2021-06-20 发布日期:2021-06-20
  • 通讯作者: 刘晔
  • 作者简介:郝刚卫(1996—),男,硕士研究生,czxsbydr@163.com
  • 基金资助:
    国家自然科学基金项目(51776147)

Performance optimization of a frost-free air cooled refrigerator with series-parallel refrigeration cycle

HAO Gangwei(),LIU Ye(),YAN Gang,YU Jianlin   

  1. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
  • Received:2020-11-03 Revised:2021-01-20 Online:2021-06-20 Published:2021-06-20
  • Contact: LIU Ye

摘要:

基于一台采用串并联制冷循环的风冷冰箱,以提高冷冻室冷冻能力和降低系统耗电量为目标,采用非共沸混合工质制冷剂,通过试验手段研究并获得了关键参数对系统性能的影响规律。研究结果表明,分别存在最佳充注量和组分浓度的不同组合,使得冰箱耗电量和冷冻室最低温度达到最低,分别为1.51 kW·h/d和-40.7℃。为了进一步降低冰箱能耗,通过试验发现风机电压存在最优值7.5 V,使得冰箱整机耗电量降低10%,达到1.16 kW·h/d。

关键词: 优化设计, 二元混合物, 力学性能

Abstract:

A frost-free air cooled refrigerator with series-parallel refrigeration cycle is studied, and the refrigerating capacity of the refrigerator and energy saving ability is optimized. Also, the influence of optimal charge quantity and optimal mass fraction of zeotropic refrigerant mixture on system performance are analyzed by experimental methods. The results shows that there exist optimal charge quantity and optimal mass fraction of zeotropic refrigerant mixture cause the power consumption and freezing chamber temperature achieve the minimum, which is 1.51 kW·h/d and -40.7℃, respectively. Besides, the experiments data shows that the optimal voltage of the fan fixed in 7.5V can make the power consumption of the refrigerator reduced 10% to 1.16 kW·h/d.

Key words: optimal design, binary mixture, mechanical properties

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