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车用CO2热泵空调系统1D-3D动态特性及控制方法研究
王海丹1, 肖迪2, 宗硕3, 殷翔3, 黄龙飞3, 王熙熙4, 杨李辰4, 曹锋3
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(1.西安交通大学 能源与动力工程学院 西安;2.中国汽车技术研究中心有限公司 天津;3.西安交通大学能源与动力工程学院 西安;4.郑州宇通客车股份有限公司 郑州)
摘要:
跨临界CO2热泵空调系统拥有良好的低温制热能力,其运行过程中的动态参数变化对乘员热舒适性的影响重大。为研究乘员舱舒适性以及跨临界CO2热泵空调系统参数动态变化的耦合规律,本文基于一维仿真软件GT-Suite和三维CFD软件STAR-CCM+搭建了联合仿真模型,建立了乘员舱温度场与热泵空调系统的结构化关联关系,综合分析了热泵空调系统运行过程中车厢动态升/降温特性。结果显示乘员舱热环境温度分布较不均匀,有必要采用加权PMV(平均热感觉指数)评价乘员舱非均匀热环境。在多PID控制的跨临界CO2汽车热泵空调系统中,使用基于加权PMV舒适度模型的控制方法能够保持系统目标参数的调控稳定。在制冷模式43 ℃环温工况下,该控制方法能够降低9.4%的压缩机功耗;在制热模式-10 ℃环温工况下,该方法能够降低17.9%的压缩机功耗,该控制方法能够在满足热舒适的前提下降低系统压缩机功耗,有助于提升新能源车续航里程。
关键词:  二氧化碳  汽车热泵空调  联合仿真  加权热舒适性模型
DOI:
投稿时间:2024-01-02  修订日期:2024-04-19   录用日期:2024-04-19
基金项目:国家重点研发计划资助、国家自然科学基金项目
Research on 1D-3D Dynamic Characteristics and Control Method of CO2 Heat Pump Air Conditioning System for Vehicles
Abstract:
The transcritical CO2 heat pump air-conditioning system has a good low-temperature heating capacity, and the dynamic parameter changes during its operation have a significant impact on the thermal comfort of the passenger cabin. In order to study the comfort of the passenger compartment and the coupling law of the dynamic changes of the parameters of the transcritical CO2 heat pump air conditioning system, a joint simulation model was built based on the one-dimensional simulation software GT-Suite and the three-dimensional CFD software STAR-CCM+ to study the three-dimensional model of the vehicle air-conditioning system in the passenger compartment. The three-dimensional cabin model can provide accurate real-time state parameters of supply air and return air for the one-dimensional simulation system of heat pump air conditioners. The results show that the temperature distribution of the thermal environment of the passenger compartment is relatively non-uniform, and it is necessary to use the weighted PMV (Predicted Mean Vote) to evaluate the non-uniform thermal environment of the passenger compartment. In the multi-PID control transcritical CO2 automobile heat pump air conditioning system, the control method based on the weighted PMV comfort model can keep the regulation and stability of the system target parameters. Under the ambient temperature condition of 43 °C in the cooling mode, the control method can reduce the power consumption of the compressor by more than 9%. In the heating mode -10 ℃ ambient temperature condition, this method can reduce the power consumption of the compressor by more than 18%. This control method can reduce the power consumption of the system compressor under the premise of meeting the comfort requirements, which is a very effective Energy saving control scheme.
Key words:  Carbon dioxide  automotive heat pump air conditioning  co-simulation  weighted PMV model

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