Two parallel rectangles have emissivities of 0 6 and 0 9, respectively These rectangles are 1 2 m wide and 2 4 m high and are 0 6 m apart The plate having 0 6 is maintained at 1000 K and the other is at 420 K The surroundings may be considered to absorb all energy that escapes the two plate system ...

1 06 T 1 1000 K A 1 288 m 2 2 09 T 2 400 K A 2 288 m 2 Writing equations for loops as shown E ...

Two parallel rectangles have emissivities of 0.6 and 0.9, respectively. These rectangles are 1.2 m wide and

Question:

Two parallel rectangles have emissivities of 0.6 and 0.9, respectively. These rectangles are 1.2 m wide and 2.4 m high and are 0.6 m apart. The plate having ε = 0.6 is maintained at 1000 K and the other is at 420 K. The surroundings may be considered to absorb all energy that escapes the two-plate
system. Determine
a. The total energy lost from the hot plate
b. The radiant-energy interchange between the two plates

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