A thin aluminum sheet with an emissivity of 0.25 on both sides is placed between two...

A thin aluminum sheet with an emissivity of 0.25 on both sides is placed between two very large parallel plates, which are maintained at uniform temperatures T1 = 600◦C and T2 = 325◦C and have emissivities ε1 = 0.5 and ε2 = 0.8, respectively. Determine the net rate of radiation heat transfer between the two plates, per unit surface area of the plates,

(a) without the radiation shield, and

(b) with the radiation shield. What is the percentage reduction in heat transfer with the shield?

Expert Solution

samet mamat answered 2 months ago

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