Abstract
Frosting on the heat exchangers of low temperature devices causes several problems. In order to solve the problem, defrosting is done by melting the frost regularly. However, the method causes loss of comfort and energy consumption etc. Therefore we have proposed mechanical defrosting as a new defrosting method. This method can perform defrosting while maintaining the cooling surface temperature low. In order to realize mechanical defrosting, it is necessary to weaken the adhesion of frost crystals. In addition, it is known that the scraping ability of frost crystals can be halved by performing water repellent treatment. In this study, surface treatment was performed on the micro-machined cooling surface, and comparison and examination were performed.
