串并联风冷冰箱性能优化  

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

作　　者：郝刚卫 刘晔 晏刚[1] 鱼剑琳[1] HAO Gangwei;LIU Ye;YAN Gang;YU Jianlin(School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,Shaanxi,China)

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《化工学报》2021年第S01期178-183,共6页CIESC Journal

基　　金：国家自然科学基金项目(51776147,51576149)。

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。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.

关 键 词：优化设计 二元混合物 力学性能 

分 类 号：TB657.4[一般工业技术—制冷工程]