变频直膨空调系统变速运行下的系统稳定性实验研究  

An Experimental Study on the Operational Stability of an Inverter-Based Direct Expansion Air Conditioning System under Variable Speed Operation

作　　者：夏宇栋 林有彬 朱春宇 Xia Yudong;Lin Youbin;Zhu Chunyu(China University of Mining and Technology,Xuzhou,221116;Zhejiang Chuangxin Auto Air-Conditioner Co.,Ltd,Longquan,323799)

机构地区：[1]中国矿业大学低碳能源与动力工程学院,徐州221116 [2]浙江创新汽车空调有限公司,龙泉323799

出　　处：《制冷与空调(四川)》2025年第2期213-217,267,共6页Refrigeration and Air Conditioning

摘　　要：通过搭建变频直膨空调系统实验台,分析了直膨空调系统在变压缩机转速及风机转速下系统的稳定性,得到了兼顾系统稳定性特征的直膨空调系统运行特性图。研究结果显示,直膨空调系统在高压缩机转速及低风机转速情况下蒸发器过热度易发生振荡,引起系统失稳。进一步分析系统在不同过热度设定下的稳定性得出,可通过动态调整过热度设定的方式保证在不同变压缩机和风机转速下的稳定运行,为开发适用于变频直膨空调系统智能高效的过热度控制算法提供借鉴。An experimental study on the operational stability of a direct expansion air conditioning system under variable speed operation is reported in this paper.The operational stability as varying both compressor and fan speeds was examined.Results showed that increasing the compressor or lowering the fan speed would cause the fluctuation of superheat,and thus leading to the system instability.A larger superheat setting was required to ensure a stable operation when the system was operated at a high compressor speed or lower fan speed.Through varying the superheat setting automatically,the operational stability of a direct expansion air conditioning system could be ensured when it was variable speed operated.

关 键 词：直膨空调 稳定性 变频压缩机 过热度 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]