In a meat processing plant, 10-cm-thick beef slabs ( = 1090 kg/m 3 , c p =
Question:
In a meat processing plant, 10-cm-thick beef slabs (ρ = 1090 kg/m3, cp = 3.54 kJ/kg · K, k = 0.47 W/m · K, and α = 0.13 × 10–6 m2/s) initially at 15°C are to be cooled in the racks of a large freezer that is maintained at 212°C. The meat slabs are placed close to each other so that heat transfer from the 10-cm-thick edges is negligible. The entire slab is to be cooled below 5°C, but the temperature of the steak is not
to drop below 21°C anywhere during refrigeration to avoid “frost bite.” The convection heat transfer coefficient and thus the rate of heat transfer from the steak can be controlled by varying the speed of a circulating fan inside. Determine the heat transfer coefficient h that will enable us to meet both temperature constraints while keeping the refrigeration time to a minimum.
Step by Step Answer:
Heat And Mass Transfer Fundamentals And Applications
ISBN: 9780073398181
5th Edition
Authors: Yunus Cengel, Afshin Ghajar