This SpringerBrief presents a recent advancement in modeling and measurement of the effect of surface wettability on the defrost process. Carefully controlled laboratory measurements of the defrosting of cooled surfaces are used to reveal the effect of surface wetting properties on the extent and speed of frost removal by melting or slumping. The experiments are accompanied by visualization of frost removal at several defrosting conditions. Analysis breaks the defrost process into three stages according to the behavior of the meltwater. Surface wetting factors are included, and become significant when sufficient meltwater accumulates between the saturated frost layer and the surface. The book is aimed at researchers, practicing engineers and graduate students.
Presents a new look at the defrost process wherein surface wettability is explicitly included in the mathematical analysis
Advances the modeling paradigm beyond strictly diffusion-controlled prior models
Adds new data to the field from experiments on carefully prepared surface with quantified properties
Corroborates the major findings of the analysis through visualization of melting
Yang Liu, is a senior engineer at Tsinghua-Zhongcheng United Research Center on Intelligent manufacturing. She received her PhD in mechanical engineering at University of Minnesota in 2017. Prior to studying at University of Minnesota, she worked as a gas turbine application engineer and field service engineer at GE China for five years. Her current work is on the vibration measurement and control.