Two very large parallel plates are maintained at uniform temperatures of T 1 1000 K and T 2 800 K and have emissivities of 1 2 0 5, respectively It is desired to reduce the net rate of radiation heat transfer between the two plates to one fifth by placing thin aluminum sheets with an emissivity of ...

To reduce the net rate of radiation heat transfer between the two plates to onefifth we can use the concept of radiation heat transfer between paralle ...

Two very large parallel plates are maintained at uniform temperatures of T 1 = 1000 K and

Question:

Two very large parallel plates are maintained at uniform temperatures of T₁ = 1000 K and T₂ = 800 K and have emissivities of ε₁ = ε₂ = 0.5, respectively. It is desired to reduce the net rate of radiation heat transfer between the two plates to one-fifth by placing thin aluminum sheets with an emissivity of 0.1 on both sides between the plates. Determine the number of sheets that need to be inserted.

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