蒸发器结霜速率实时测定

Real-time measurement for evaporator frosting rate

用激光衍射技术对制冷蒸发器的结霜速率进行实时测定。该技术简单、直观、精度高。并叙述了测试原理、方法和精度等。

The frosting rate of the evaporator interface is an important parameter for designing the refrigerator system.In this paper,we described a novel technique of laser diffraction measurement technique to visually and fast determine the frosting rate.There was a space between the frosted surface and the reference surface.When a light went through the space,the diffraction fringes were performed.Then the frosted area expended,the space changed more narrow,and the diffraction fringes moved.With the variation of the location of the diffraction fringes,the frost rate can be precisely determined.