Metal plates (k = 180 W/m-K, Q = 2800 kg/m3, and cp = 880 J/kg-K) with...

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Metal plates (k = 180 W/m-K, Q = 2800 kg/m3, and cp = 880 J/kg-K) with a length of 1 m and a thickness of 2 cm exiting an oven are then conveyed through a 10-m-long cooling chamber at a speed of 5 mm/s. The plates enter the cooling chamber at an initial temperature of 155°C. In the cooling chamber, the plates are cooled with 10°C air blowing in parallel over them. To prevent any incident of thermal burn, it is necessary to design the cooling process such that the plates exit the cooling chamber at a relatively safe temperature. Cooling chamber 5 mm/s Determine the air velocity such that the temperature of the plates exiting the cooling chamber is 45°C or less. Assume combined laminar and turbulent flow (verify this assumption). Use the lumped system analysis to determine the required cooling time (verify application of this method to this problem). Use EES to solve this problem and submit the code along with your solution. 2 cm ELLI Metal plate ttttt Blowing air, 10°C Metal plates (k = 180 W/m-K, Q = 2800 kg/m3, and cp = 880 J/kg-K) with a length of 1 m and a thickness of 2 cm exiting an oven are then conveyed through a 10-m-long cooling chamber at a speed of 5 mm/s. The plates enter the cooling chamber at an initial temperature of 155°C. In the cooling chamber, the plates are cooled with 10°C air blowing in parallel over them. To prevent any incident of thermal burn, it is necessary to design the cooling process such that the plates exit the cooling chamber at a relatively safe temperature. Cooling chamber 5 mm/s Determine the air velocity such that the temperature of the plates exiting the cooling chamber is 45°C or less. Assume combined laminar and turbulent flow (verify this assumption). Use the lumped system analysis to determine the required cooling time (verify application of this method to this problem). Use EES to solve this problem and submit the code along with your solution. 2 cm ELLI Metal plate ttttt Blowing air, 10°C

Answer rating: 100% (QA)

To determine the air velocity and the required cooling time for the metal plates we can use the lumped system analysis This method assumes that the entire plate can be considered as a single lumped ob... View the full answer