制冷技术2025，Vol.45Issue(2)：1-8,14,9.DOI:10.3969/j.issn.2095-4468.2025.02.101
闭式热泵烘干系统运行参数耦合关系研究
Research on Coupling Relationship of Operating Parameters for Closed Loop Heat Pump Drying System
赵冉 1冯业 1梁坤峰 1赵一宸 1李琳琳 1孙启锋1
作者信息
- 1. 河南科技大学车辆与交通工程学院,河南 洛阳 471000
- 折叠
摘要
Abstract
An experimental study is conducted using the single-factor experimental method on a closed-loop heat pump drying system incorporating air bypass and series-connected external auxiliary condenser.The research focused on analyzing the influence principles of material loading,circulating air velocity,expansion valve opening and air bypass rate on the specific moisture extraction rate(SMER).The results demonstrated that under optimal refrigerant charge(645 g)and identical drying duration,the system exhibited an optimal material loading of 1.845 kg.SMER is initially observed to increase then decrease with rising air circulation velocity.Superheat is increased and evaporation temperature is decreased by reducing the expansion valve opening,leading to enhanced dehumidification capacity and SMER.Maximum energy consumption reduction of 10.7%and SMER improvement of 20%are achieved by this configuration compared to 5℃superheat conditions.An optimal air bypass ratio of 0.6 is identified for the system,resulting in a 35.7%SMER enhancement relative to non-bypass operation.关键词
热泵烘干/辅助冷凝器/系统性能/单位能耗除湿量Key words
Heat pump drying/Auxiliary condenser/System performance/Specific moisture extraction rate引用本文复制引用
赵冉,冯业,梁坤峰,赵一宸,李琳琳,孙启锋..闭式热泵烘干系统运行参数耦合关系研究[J].制冷技术,2025,45(2):1-8,14,9.
