& = 0,2 - 0.2 T, - 800 K E =0.7 T, = 500 K
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Two very large parallel plates are maintained at uniform temperatures T1=800Kand T2=500 K and have emissivities e= 0.2 and e=0.7, respectively,as shown in Figure. Determine the net rate of radiation heat transfer between the two surfaces per unit surface area of the plates.
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