霜成長方向制御のためのマイクロテクスチャリング及びはっ水性の付与とその観察

抄録

Generally, refrigerator has heater onto heat-exchanger set in freezing room. It requires us extra electricity only to thaw frost on the heat-exchanger. To replace heat-exchanger is worthwhile, however, frosting generation is not able to prevent. Therefore, a surface which can easily detach frost is truly demanded. Surface wettability and micro-texturing is supposed to have influence to change contact angle of frost and its contact area between frost and the surface, so we prepared several micro-texturing surface to observe the growth of frost on different line/space width, and depth specimens to clarify the effect of texturing on it. In the environmental scanning electron microscope (ESEM) equipped peltier device behind of sample was used to observe the surface and micro frost generation on each surface.