Dimensionless correlations of frost properties on a cold cylinder surface

The proposed correlation held good for Reynolds numbers of 700-3000, air temperatures of 3-9 °C, and cylinder surface temperatures of -32 to -20 °C.

“However, the proposed correlation held good for Reynolds numbers of 700-3000, air temperatures of 3-9 ° C and cylinder surface temperatures of 32 to 20 ° C.”

Kim et al.'s proposed dimensionless correlations for cylindrical surface had a maximum error of 15% compared with experimental data.

“proposed dimensionless correlations for cylindrical surface with maximum error of 15% when compared with experimental data.”

Frost thickness, frost surface temperature, and frost density were more uniformly distributed at high compared to low air velocities.

“The authors found that the frost thickness, frost surface temperature and frost density were more uniformly distributed at high compared to low air velocities.”

Only Kim et al. [31] presented frost density correlations of a cold cylinder, which were a function of Reynolds and Fourier numbers, air moisture content, cold surface temperature, and air temperature.

“only Kim et al. [31] presented frost density correlations of a cold cylinder, which were a function of Rey­ nolds and Fourier numbers, air moisture content, cold surface temper­ ature, and air temperature.”

Schneider's and Kim et al.'s average frost thickness correlations for cold cylinders are both functions of frosting duration, cold surface temperature, air temperature, and air moisture content or partial water vapor pressure.

“The similarity between Schneider ' s and Kim et al. ' s correlations was that both of them were the functions of frosting duration, cold surface tem­ perature, air temperature and air moisture content or partial water”

Only Schneider and Kim et al. presented average frost thickness correlations for cold cylinders.

“As can be seen from Table 2, only Schneider [30] and Kim et al. [31] presented average frost thickness correlations for cold cylinders.”

Both frost thickness and density distributions along angular position on a cylinder become more uniform at a higher air velocity.

“It can be concluded that both the frost thickness and density distributions along angular position became more uniform at a higher air velocity.”

On a cylinder, frost density at all angular positions and frost thickness at angular positions from 75° to 165° increase significantly at a higher air velocity, while frost thickness at other angular positions varies slightly.

“Besides, the frost density at all angular positions and frost thickness at those from 75 ◦ to 165 ◦ was increased significantly at a higher air velocity, while the frost thickness at other angular positions varied slightly.”