Year: 2004
Type: conference-paper
Abstract: This paper presents a mathematical model to predict the frost properties and heat and mass transfer within the frost layer formed on a cold plate.The laminar flow equations for the moist air and the empirical correlations of local frost properties are employed in order to predict the frost layer growth.The correlations of the local frost density and the effective thermal conductivity of the frost layer, derived from the various experimental data, are expressed as a function of the various frosting parameters: Reynolds number, frost surface temperature, absolute humidity and temperature of moist air, cooling plate temperature, and frost density.The numerical results are compared with experimental data to validate the present model, and they agree well with the experimental data within a maximum error of 10%.The heat and mass transfer coefficients obtained from the numerical analyses are also presented.Results show that the model for frost growth using the correlation of the heat transfer coefficient without considering the air flow has a limitation in its application.
Authors: Yang, Dong Keun, Lee, Dong Hoon, Kim, Jung Soo, Lee, Kwan Soo
Institution: Hanyang University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7039432612