ZVISION's Smart and Standardized Manufacturing

When you are enjoying the green,energy-saving and healthy lighting of IKEA LED luminaire,you may not realize that most of IKEA’s LED bulbs are produced by the LED luminaire smart manufacturing system of Hangzhou Zhongwei Photoelectricity CO.,LTD(ZVISION).No longer enclosed in the laboratory,the product standards are brought into the factory workshop and even to the entire production process.Thus,the standards are promoted and applied in a favorable way by enterprises,benefitting consumers with high quality products.

翅片结构对换热器结霜特性影响的实验研究

本文对空气源热泵的翅片管换热器表面霜层生长特性进行实验研究,通过红外热像仪对霜层表面温度进行测量,并用热电偶直接测量装置进行校核。分析了平片、波纹片、条缝片3种翅片类型及翅片节距对霜层厚度、结霜量、换热量的影响,并用霜层-湿空气界面条件等作为传热及传质驱动力分析了霜层生长规律。实验结果表明,波纹片及条缝片翅片换热器界面传热、传质驱动力高于平片,造成其表面霜层生长速度大于平片,而在结霜后期条缝片霜层生长速度显著加快;在3种翅片中,条缝片表面结霜周期最短,而平片表面结霜周期最长;波纹片换热器的平均换热量最大,比条缝片、平片换热器分别高出0.61%、2.67%;翅片节距对界面传热、传质驱动力的影响较弱,但翅片节距越大,其表面霜层厚度增长越快且结霜周期越长,大节距翅片换热器表面霜层较为疏松。综合考虑结霜-除霜周期中换热器平均换热量及空气侧阻力,结霜工况下波纹片换热器最佳翅片节距约为2.2 mm。