Question

In: Mechanical Engineering

4. a frozen cream ice is placed into the container before the freezing process is complete....

4. a frozen cream ice is placed into the container before the freezing process is complete. The container has a slinder-shaped dimension with a diameter of 3.5m and is then placed in a water blast freezer with a heat conductivity coefficient of -25 W (m2 k). product temperature of -11 c and air temperature of -25 c. product density is 700kg / m3. thermal conductivity (frozen) 1.2 W / (m K), and specific heat 1.9 kj (kg / K). if latent heat is lost during the blast freezing process 250k j / kg. make an estimated freezing time? ... (kj / w)

Solutions

Expert Solution

Please note that no method is mentioned in question. As per given data, Phams methods seems to be best solution for question. Apologies for the bad handwriting.




(The time for freezing may seem higher but given object is also large with 3m diameter.)

Note: Please upvote if this helps you. In case of doubts, comment below. Good luck!


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