流体机械2025，Vol.53Issue(6)：39-47,9.DOI:10.3969/j.issn.1005-0329.2025.06.006
冷库板式蒸发器传热特性及结构优化研究
Research on heat transfer characteristics and structural optimization of cold storage plate evaporator
摘要
Abstract
In order to improve the heat transfer performance of the evaporator in the cold storage refrigeration system,a new type of plate evaporator was designed.The influence of refrigerant mass flow rate and air side velocity on the heat transfer characteristics of the plate evaporator was discussed by using the method of simulation combined with experiments,and an optimized structure with an intermediate channel was proposed.The heat transfer characteristics of the plate evaporator were studied when the inlet dryness of refrigerant R22 was 0.27,the temperature was-5℃,the saturation pressure at this temperature was 0.421 8 MPa,the mass flow rate was 0.017 kg/s,the air inlet temperature was 6℃,the relative humidity was 80%,and the flow rate was 3 m/s.The results show that in the design conditions,the cooling capacity in this design condition is 2.86 kW,the refrigerant side pressure drop is 1 150 Pa,and the air side pressure drop is 412 Pa.As the mass flow rate of refrigerant increases,the cooling capacity increases,but the growth rate slows down significantly after reaching 0.017 kg/s.The pressure drop on the refrigerant side also increases,and the growth rate gradually increases.As the inlet flow rate on the air side increases,the cooling capacity increases,but the growth rate slows down significantly after reaching 3 m/s.The pressure drop on the air side also increases,and the growth rate gradually increases.The refrigerant mass flow rate should match the air inlet conditions.Compared with the original structure,the plate evaporator with a middle connected structure has increased cooling capacity by more than 9.4%,increased refrigerant side pressure drop by 18.3%,and increased air side pressure drop by 20.2%.The intermediate connected structure can improve the heat transfer performance of the evaporator.The research results can provide reference for the study and design of evaporators in cold storage refrigeration systems.关键词
冷库/板式蒸发器/传热特性/数值模拟/结构优化Key words
cold storage/plate evaporator/heat transfer characteristics/numerical simulation/structural optimization分类
化学化工引用本文复制引用
徐迅,苑昭阔..冷库板式蒸发器传热特性及结构优化研究[J].流体机械,2025,53(6):39-47,9.基金项目
国家重点研发计划(2020YFC1910104) （2020YFC1910104）
南通市科技项目(JC22022071) （JC22022071）
