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1.小米智能家电(武汉)有限公司 武汉 430075
2. 上海交通大学船舶海洋与建筑工程学院 上海 200240
段钟弟,男,副研究员,上海交通大学船舶海洋与建筑工程学院,13761445683,E-mail:duanzhongdi@sjtu.edu.cn。研究方向:制冷系统仿真,换热器优化设计。Duan Zhongdi, male, associate researcher, School of Ocean and Civil Engineering, Shanghai Jiao Tong University, 86-13761445683, E-mail: duanzhongdi@sjtu.edu.cn. Research fields: refrigeration system simulation, optimization and design of heat exchangers.
收稿:2025-08-25,
修回:2025-11-18,
录用:2025-11-20,
网络首发:2026-04-16,
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李文博,张辉,李双良等.带补气增焓的热泵型多联式空调系统稳态仿真方法[J].制冷学报,
Li Wenbo,Zhang Hui,Li Shuangliang,et al.Steady-State Simulation Approach of Heat Pump Type Multi-Unit Air Conditioning Systems with Vapor Injection[J].Journal of Refrigeration,
李文博,张辉,李双良等.带补气增焓的热泵型多联式空调系统稳态仿真方法[J].制冷学报, DOI:10.12465/issn.0253-4339.20250825001.
Li Wenbo,Zhang Hui,Li Shuangliang,et al.Steady-State Simulation Approach of Heat Pump Type Multi-Unit Air Conditioning Systems with Vapor Injection[J].Journal of Refrigeration, DOI:10.12465/issn.0253-4339.20250825001.
中间补气增焓技术可有效提升热泵型多联机的低温制热性能,但其系统结构复杂、部件耦合性强,需要更为通用的多联机稳态仿真方法。本文提出一种改进的基于图论的补气增焓多联机稳态仿真方法,通过将部件抽象转化为计算单元,建立了以制冷剂流路为引导的计算单元图论描述方法;采用计算单元有向图表征制冷/制热模式下的邻接关系,结合四通阀模型实现模式切换。提出了系统压力路径与流路径的双层路径生成方法,开发了流量-压力解耦迭代算法。基于一拖四补气增焓多联机实测数据验证表明,额定制冷/制热工况下模型预测误差小于±5%。基于本文仿真方法开发了支持自定义系统结构的多联机稳态仿真平台,为多联机设计开发提供便捷的数字化工具。
Vapor injection technology can effectively enhance the heating performance of heat pump-type multi-unit air conditioning systems (heat pump VRF) under low-temperature conditions. However, complex system configuration and component coupling necessitate a more general steady-state simulation approach for VRF heat pumps. This study proposes an improved graph-theory-based steady-state simulation method for a multiunit air-conditioning system with vapor injection. By abstracting the components into computational units, a graph-theory-based description method guided by the refrigerant flow paths was established. A directed graph of computation units was employed to characterize the adjacency relationships in cooling/heating modes, with mode switching achieved using a four-way valve model. A dual-layer path generation method for system pressure and flow paths is proposed, along with a decoupled iterative algorithm for flow pressure calculation. Validation based on experimental data from a heat pump VRF system with vapor injection (four indoor units) shows that the model prediction error is within ±5% under rated cooling/heating conditions. A steady-state simulation platform with customizable system configurations was developed based on the proposed method, providing a convenient digital tool for the VRF system design.
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