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Unformatted text preview: about 0.82 (82%) (Some variability was permitted, since the chart cannot be read with high accuracy). (b) For one fin q = 5.6 W (Area of one fin 2.28E-3 m^2) (c) q_total= 1290 W (200 fins, base area 0.05667 m^2) Question 4. (This is a fairly tough question - I did more on radiation in W1999 than I usually get to. So, I may not have covered this material in detail this year.) (a) See the example for two parallel plates that I did in lecture (the sketch is identical). (b) q1=8757 W (Shape factors: F12=.367, F13=.633, F23=.79) (c) T2=382 K = 109 C (J_2=1211 W/m^2) (Note that since surface 2 is re-radiating (insulated), Eb2=J2=sigma T2^4. So, you have to find the radiosity of surface 2, J2)....
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This note was uploaded on 02/20/2011 for the course MEC 613 taught by Professor Don during the Winter '11 term at Ryerson.
- Winter '11
- Machine Design