Experimental Study on the Frosting/Defrosting Performance of Super Hydrophobic Evaporator Based on Micro-Nano Technology

In order to improve the heat exchanger efficiency, reduce energy consumption, the anti-frosting performance of superhydrophobic evaporator was investigated experimentally. By comparing the frosting time, form, process, surface condition and defrosting time, form, process and surface condition of hydrophilic evaporator and superhydrophobic evaporator, the frosting/defrosting principle of superhydrophobic evaporator was analyzed. Conclusion showed that the super hydrophobicity can delay frosting formation initially, reduce frosting accumulation effectively. In the process of frosting, the energy consumption ratio of hydrophilic evaporator and superhydrophobic evaporator was obtained. It declared that the superhydrophobic evaporator had better anti-frosting performance and higher energy efficiency ratio than the hydrophilic evaporator.