A fish fillet of $5 \mathrm{~mm}$ thickness having $85 \%$ moisture (wet basis) is to be frozen using a plate freezer. The plates are at $-35^{\circ} \mathrm{C}$ and the heat transfer coefficient between the fillet and the freezer plates can be assumed to be $2.0 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$. The initial freezing temperature of fish is $-2.5{ }^{\circ} \mathrm{C}$, latent heat of fusion is $330 \mathrm{~kJ} \mathrm{~kg}^{-1},$ density of fish is $1100 \mathrm{~kg} \mathrm{~m}^{-3}$ and thermal conductivity of frozen fish is $1.5 \mathrm{~W} \mathrm{~m}^{-1} \mathrm{~K}^{-1}$. The time required to freeze the fillet from the initial freezing temperature in $\operatorname{hour}(\mathrm{s})$ is_______________

Question ID - 157299 | SaraNextGen Top Answer

A fish fillet of $5 \mathrm{~mm}$ thickness having $85 \%$ moisture (wet basis) is to be frozen using a plate freezer. The plates are at $-35^{\circ} \mathrm{C}$ and the heat transfer coefficient between the fillet and the freezer plates can be assumed to be $2.0 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$. The initial freezing temperature of fish is $-2.5{ }^{\circ} \mathrm{C}$, latent heat of fusion is $330 \mathrm{~kJ} \mathrm{~kg}^{-1},$ density of fish is $1100 \mathrm{~kg} \mathrm{~m}^{-3}$ and thermal conductivity of frozen fish is $1.5 \mathrm{~W} \mathrm{~m}^{-1} \mathrm{~K}^{-1}$. The time required to freeze the fillet from the initial freezing temperature in $\operatorname{hour}(\mathrm{s})$ is_______________