摘要
为探究冷藏车制冷系统在结霜工况下的性能,同时研究影响结霜的外部因素,搭建了电动冷藏车制冷系统实验台,主要研究系统在微通道蒸发器结霜时的性能。研究结果表明,当蒸发器结霜完成后,其表面出现结霜不均匀现象;在同一库内相对湿度70%下,当库内温度分别为6℃、2℃与-2℃时,在结霜过程中,系统制冷量分别降低了73.1%、78.2%与80.6%,COP分别降低了65.5%、68.4%与73.4%;在同一库内温度2℃下,当库内相对湿度分别为为60%、70%与80%时,在结霜过程中,系统制冷量分别降低了74.6%、78.7%、83.2%,COP分别降低了65.6%、69.4%与69.7%。
In order to explore the refrigeration system performance in a refrigerated vehicle under frosting conditions and to study the external factors to cause frosting, a test bench for electric refrigerated vehicle refrigeration system was built, and the performance of the system was mainly studiedwhen the microchannel evaporator was frosted. The research results show that when the evaporator is frosted, uneven frosting appears on its surface;under the relative humidity of 70% in the same storage chamber, when the temperature in the storage chamber is 6 ℃, 2 ℃ and-2 ℃, during the frost process, the cooling capacity of the system is reduced by 73.1%, 78.2% and 80.6%, and the COP is reduced by 65.5%, 68.4% and 73.4%, respectively. Under the same temperature of 2 ℃, when the relative humidities of the warehouse are 60%, 70% and 80%, during the frosting process, the cooling capacity of the system decreases by 74.6%, 78.7%, and 83.2%, and the COP decreases by 65.6%, 69.4%, and 69.7%, respectively.
作者
赵晓丹
余壮
Zhao Xiaodan;Yu Zhuang(School of Civil Engineering and Architecture,Zhengzhou University of Econ.and Busi.,Zhengzhou 451191,hina)
出处
《低温与超导》
CAS
北大核心
2022年第6期60-65,共6页
Cryogenics and Superconductivity
基金
国家自然科学基金(51676201)
郑州经贸学院科技攻关项目(ky1905)资助。
关键词
冷藏车
制冷系统
微通道蒸发器
结霜
制冷性能
Refrigerated truck
Refrigeration system
Microchannel evaporator
Frost
Cooling performance
