| Title |
Empirical Correlations of Frost Properties on the Fin of a Heat Exchanger |
| Authors |
김경민(Kyoungmin Kim) ; 이관수(Kwan-Soo Lee) |
| Keywords |
실험상관식 ; 서리 물성치 ; 열교환기 핀 ; 불균일한 온도분포 Empirical correlations ; Frost properties ; Heat exchanger fin ; Non-uniform temperature distribution |
| Abstract |
In this study, fin surface temperature and frost properties, i.e., frost thickness and frost surface temperature on a heat exchanger, were experimentally analyzed with different fin thicknesses, fin sizes and thermal conductivities of fin. As a result, it is found that fin thickness and thermal conductivity of fin should be considered in order to design an efficient heat exchanger fin. Correlations of dimensionless average frost properties were proposed as functions of dimensionless air temperature, dimensionless fin base temperature, dimensionless fin thickness, absolute air humidity, Reynolds number and Fourier number. The correlations predicted well the average frost thickness with a maximum error of 10.5% and frost surface temperature with a maximum difference of 0.89 ℃, respectively. |