首页|电动工程机械双热源热泵空调系统的仿真和试验

电动工程机械双热源热泵空调系统的仿真和试验

Simulation and Experimental of Dual Heat Source Heat Pump Air Conditioning System for Electric Construction Machinery

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热泵空调系统是电动汽车新型加热取暖方式之一,具有制热制冷效率高、控制方便等优势,其在电动工程机械领域也有良好的应用前景.但热泵空调系统最大的应用难题是其利用的冷媒R134a在低温环境温度下,由于制冷剂本身性质的限制及室外侧换热器结霜现象,导致系统的制热性能严重下降,进而影响热泵空调系统的综合性能.据此,提出了基于双热源热泵空调的纯电工程机械整车热管理系统的解决办法,引入工程机械的电驱系统余热作为电驱源,与传统热泵空调的空气源组成双热源热泵空调系统,通过系统中余热的合理运用,提高能量利用率.AMESim仿真和热管理试验平台不同模式下的试验结果表明,电驱源热泵系统的制热性能明显优于传统空气热源热泵,有效提高制热能效系数.
In the field of electric vehicle air conditioning,the heat pump air conditioning system is one of the new heating and heating methods,with high heating and cooling efficiency,convenient control and other advantages.Similarly,it also has a good application prospect in the field of electric construction machinery.The biggest application problem of the refrigerant R134a used in the heat pump air conditioning system is that at low ambient temperature,the heating performance of the system is seriously decreased due to the limitation of the nature of the refrigerant itself and the frost phenomenon of the outdoor heat exchanger,which further affects the comprehensive performance of the heat pump air conditioning system.Based on this,the solution of the pure electric construction machinery vehicle thermal management system based on dual heat source heat pump air conditioning is proposed.Introducing the waste heat of the electric drive system of construction machinery as the electric drive source,the dual heat source heat pump air conditioning system is formed with the air source of traditional heat pump air conditioning,and the rational use of waste heat in the system can improve the energy utilization rate.The experimental results based on the AMESim simulation system and the thermal management test platform in different modes show that the heating performance of the electric drive source heat pump system is obviously better than that of the traditional air source heat pump,and effectively improves the coefficient of performance.

heat pump air conditioningvehicle thermal managementwaste heat recoveryelectric construction machineryheating energy efficiency coefficient

王琦、任好玲、林添良、林元正、王湧、张杏

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华侨大学机电及自动化学院,福建厦门 361000

热泵空调 整车热管理 余热回收 电动工程机械 制热能效系数

国家自然科学基金面上项目福建省自然科学基金重点项目厦门市重大科技计划项目

522750552021J020133502Z20231013

2024

10.11832/j.issn.1000-4858.2024.10.002

液压与气动
北京机械工业自动化研究所

液压与气动

CSTPCD北大核心
影响因子：0.453
ISSN：1000-4858
年,卷(期)：2024.48(10)