Question

Metal plates (k = 180 W/m·K, ρ = 2800 kg/m3, and cp = 880 J/kg·K) with a thickness of 1 cm are being heated in an oven for 2 min. Air in the oven is maintained at 800°C with a convection heat transfer coefficient of 200 W/m2·K. If the initial temperature of the plates is 20°C, determine the temperature of the plates when they are removed from the oven.

Name: metal plates k 180 wmk r 2800 kgm3 and cp 880 jkgk with a thickness of 1 cm are being heated in an oven for 2 min air in the oven is maintained at 800c with a convection heat transfer coeffi 73182
Uploaded: 2022-09-07T00:36:39-08:00
Duration: 3 min 59 s
Channel: Penny Riley
Description: metal plates k 180 wmk r 2800 kgm3 and cp 880 jkgk with a thickness of 1 cm are being heated in an oven for 2 min air in the oven is maintained at 800c with a convection heat transfer coeffi 73182

          Metal plates (k = 180 W/m·K, ρ = 2800 kg/m3, and cp = 880 J/kg·K) with a thickness of 1 cm are being heated in an oven for 2 min. Air in the oven is maintained at 800°C with a convection heat transfer coefficient of 200 W/m2·K. If the initial temperature of the plates is 20°C, determine the temperature of the plates when they are removed from the oven.

Added by Steve M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Penny Riley

09/07/2022

Step 1

The Biot number (Bi) will help determine if the lumped capacitance method can be used. Show more…

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Metal plates (k = 180 W/m·K, ρ = 2800 kg/m3, and cp = 880 J/kg·K) with a thickness of 1 cm are being heated in an oven for 2 min. Air in the oven is maintained at 800°C with a convection heat transfer coefficient of 200 W/m2·K. If the initial temperature of the plates is 20°C, determine the temperature of the plates when they are removed from the oven.