A Research on Automobile Air-conditioning Evaporator Defrosting Determination Method Based on Evaporating Temperature

作者：Yu, Binbin; Zhu, Jianmin; Wang, Dandong; Chen, Liang; Hu, Jichao; Chen, Jiangping^*

来源：Qiche Gongcheng/automotive Engineering, 2018, 40(8): 989-996.

DOI：10.19562/j.chinasae.qcgc.2018.08.018

• Automobile air conditioning
• Average relative error
• Contrast experiment
• Cooling time
• Determination methods
• Evaporating temperature
• Relative errors
• Stable operation

A new defrosting determination method for automobile air-conditioning based on evaporating temperature is proposed and the effective coefficient of mass flow is defined as the judgment criterion of this method. By contrast experiments, its validation on predicting frosting degree is verified. Results show that the average relative error between defrosting start time determined by this method and appropriate defrosting start time defined is only 7.2%, with a relative error range of 0~-15%. On the premise of allowing frosting on part of the evaporator surface, the new defrosting determination method can control the frosting range effectively;hence extend the cooling time while ensuring the stable operation of the air-conditioning system.

• 出版日期2018
• 单位上海交通大学