亲水涂层翅片应用于风冷冰箱的性能研究

Study on the Performance of Hydrophilic Coated Fins in Air-cooled Refrigerators

在制冷领域结霜现象不可避免,霜层通常会对制冷性能造成影响。由于亲水性涂层可以起到一定的抑制结霜的效果,通过搭建模拟风冷冰箱的实验台,在蒸发器翅片表面涂覆亲水材料,设计合理的实验方案,建立对照实验组,分析比较亲水涂层抑霜延缓结霜的能力、耗电量和功率的变化,对蒸发器换热能力的影响,并对涂层的稳定性进行初步研究,讨论了技术可行性和经济可行性。通过实验对比发现:亲水性翅片应用于风冷冰箱可有效延缓结霜,而且提升了蒸发器的换热性能从而提升了制冷效率。相同的工况下系统的耗电量和功率都有所降低,连续运行多个循环涂层稳定性较好,且该亲水性翅片适用范围广,经济效益好。但仍需合理控制融霜的时长和退出时间点,以保证其亲水特性。

Frost formation is inevitable in the field of refrigeration,frost layer usually affects the performance of refrigeration.Because hydrophilic coating can play a certain role in inhibiting frost formation,a reasonable experimental scheme is designed by setting up an experimental platform simulating air-cooled refrigerator and coating hydrophilic material on the surface of evaporator fin,and a control experimental group is established to analyze and compare the hydrophilic coating's ability to resist frost and delay frost formation,the change of electricity consumption and power,and the influence on the heat transfer ability of evaporator.The stability of the coating is preliminarily studied and the technical and economic feasibility is discussed.The application of hydrophilic fin in air-cooled refrigerator can effectively delay frosting and improve the heat transfer performance of evaporator so as to improve the cooling efficiency.Under the same working conditions,the power consumption and power of the system have been reduced to some extent.The continuous operation of multiple circulating coatings has good stability,and the hydrophilic fins have a wide range of application and good economic benefits.However,the defrosting duration and exit point should be controlled reasonably to ensure its hydrophilic characteristics.