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논문 기본 정보

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대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2004도 춘계학술대회 강연 및 논문 초록집
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    초록·키워드

    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 air-side are analyzed, and the empirical correlations of local frost properties are employed in order to predict the frost layer growth. The correlations of local frost density and effective thermal conductivity of frost layer. obtained from various experimental conditions. are derived as functions of various frosting parameters (Reynolds number. frost surface temperature. absolute humidity and temperature of moist air. cooling plate temperature. and frost density). The numerical results arc compared with experimental data and the results of various models to validate the present model, and agree well with experimental data within a maximum error of 10%. The heat and mass transfer coefficients obtained from the numerical analyses are presented, as the results. it is found that the model for frost growth using the correlation of heat transfer coefficient without solving air flow have a limitation in its application.

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      UCI(KEPA) : I410-ECN-0101-2009-550-016017918