A food product wants to be produced in a small round shape (pellet) by freezing it in a water blast freezer freezer. Air freezer operates at a temperature of -35 C. The initial product temperature is 25 ° C. The pellet has a diameter of 1.2 cm, and a density of 980 kg / m3. The initial freezing temperature is -2.5 ° C. The latent heat of freezing of the product is 280 kJ/ kg. The thermal conductivity of the frozen product is 1.9 W/ (m° C). The convective heat transfer coefficient is 50 W / (m2 K). Calculate the freeze time. identify : a. tf = Answer in hour
A food product wants to be produced in a small round shape (pellet) by freezing it in a water blast freezer freezer. Air freezer operates at a temperature of -35 C. The initial product temperature is 25 ° C. The pellet has a diameter of 1.2 cm, and a density of 980 kg / m3. The initial freezing temperature is -2.5 ° C. The latent heat of freezing of the product is 280 kJ/ kg. The thermal conductivity of the frozen product is 1.9 W/ (m° C). The convective heat transfer coefficient is 50 W / (m2 K). Calculate the freeze time. identify : a. tf = Answer in hour
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A food product wants to be produced in a small round shape (pellet) by freezing it in a water blast freezer freezer. Air
freezer operates at a temperature of -35 ° C. The initial product temperature is 25 ° C. The pellet has a diameter of
1.2 cm, and a density of 980 kg / m³. The initial freezing temperature is -2.5 ° C. The latent heat of freezing of the
product is 280 kJ / kg. The thermal conductivity of the frozen product is 1.9 W / (m ° C). The convective heat
transfer coefficient is 50 W / (m² K). Calculate the freeze time. identify :
a. tf = Answer in hour
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