2. A thin aluminum sheet with an emissivity of 0.2 on both side is placed between...

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2. A thin aluminum sheet with an emissivity of 0.2 on both side is placed between two very large plates, which are maintained at uniform temperature T1=800 K, T2= 500 K and emissivity of ɛ1= 0.6 and ɛ= 0.8 respectively. Determine the rate of radiation heat transfer between the two plates per unit surface area of the plates and compare the results with that without the shields. T= 800K Ez= 0.6 Radiation Shield ɛ3= 0.2 T2= 500K E2= 0.8 2. A thin aluminum sheet with an emissivity of 0.2 on both side is placed between two very large plates, which are maintained at uniform temperature T1=800 K, T2= 500 K and emissivity of ɛ1= 0.6 and ɛ= 0.8 respectively. Determine the rate of radiation heat transfer between the two plates per unit surface area of the plates and compare the results with that without the shields. T= 800K Ez= 0.6 Radiation Shield ɛ3= 0.2 T2= 500K E2= 0.8