一种基于四换热器构型的整体式热泵热回收型新风除湿机

新风除湿系统通过置换室内空气和控制室内湿度营造健康舒适的建筑环境。但家用整体式新风除湿热泵受限于安装空间，存在除湿能效低、能力不足等问题。本文提出一种基于四换热器构型的热泵热回收型新风除湿系统，既能全面回收内外部冷能，提升除湿能力和能效；又能通过空气流路和制冷剂流路的转换产生多种运行模式，满足各种应用场景下的新风除湿需求。系统仿真和样机的实测结果表明，在名义制冷工况下的除湿能效SMER高达3.27 kg/(kW·h),相比三换热器系统提升35.2%,相比二换热器系统提升59.6%。

Packaged Fresh Air Dehumidification System with Heat Pump Heat Recovery Using Four Heat Exchangers

Fresh air dehumidification systems enable a healthy and comfortable building environment by controlling indoor humidity and replacing indoor air with fresh air. However, the fresh air dehumidification heat pump equipped in the system is limited by the installation space, resulting in low dehumidification efficiency and insufficient capacity. A new air dehumidification system based on a configuration comprising four heat exchangers is proposed herein to fully recover heat from indoor and outdoor air such that the dehumidification capacity and energy efficiency can be improved. Furthermore, it features various operation modes by switching the air and refrigerant flow paths, which satisfies the requirements of fresh air dehumidification in various application scenarios. Simulation and experimental results of the prototype show that the maximum specific moisture extraction rate(SMER) is 3.27 kg/(kW?h) under the rated cooling conditions, which is 35.2% and 59.6% higher than those of systems comprising three and two heat exchanger systems, respectively.