GATE Agricultural - GATE 2017-2018 Questions and Answers

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Discussion :: GATE Agricultural

A fish fillet of 5 mm thickness having 85% moisture (wet basis) is to be frozen using a plate freezer. The plates are at -35⁰C and the heat transfer coefficient between the fillet and the freezer plates can be assumed to be 2.0 W m^-2 K^-1. The initial freezing temperature of fish is -2.5⁰C, latent heat of fusion is 330 kJ kg^-1, density of fish is 1100 kg m^-3 and thermal conductivity of frozen fish is 1.5 W mm^-1 K^-1. The time required to freeze the fillet from the initial freezing temperature in hour(s) is __________

6.25 to 6.35

5.25 to 5.35

4.25 to 4.35

3.25 to 3.35

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