A circular disk (ignore its thickness) of D = 1 m diameter is placed over a barbecue pit maintainedat T₁ = T2 = 600 K. The upper surface of the disk is exposed to quiescent ambient air andsurroundings at 300 K. The bottom surface and top surface of the disk has emissivities of εd.1 = 1.0and d2 = 0.9, respectively. The bottom and cylindrical side surface of the barbecue pit haveemissivities of 81 = 0.6 and ɛ2 = 1.0, respectively. Assume the disk and barbecue pit surfaces arediffuse and gray.A) Determine the net heat transfer rate to the cover, qnet,d, when Ta= 500 K.B) Plot qnet,d as a function of the disk temperature for 300 K < Ta< 600 K, using Excel orMATLAB. What is the steady-state temperature of the disk?gQuiescentAirTsur T300 KDisk--Ed.2 = 0.9Ed,1 = 1.0-T₂, ₂ = 1T₁, ₁ = 0.6;L= 0.5 mD=1m

B) To plot \( q_{\text{net,d}} \) as a function of \( T_{\text{disk}} \) for \( 300 \, \text{K} <…

Answered: A circular disk (ignore its thickness)…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2_5190874259647370... A cylindrical shape is with diameter of 1.2m and length of 1.2m. The top surface has an emissivity of 0.7 and temperature 500 K. The bottom surface has an emissivity of o.5 and temperature 650 K. The side surface has an emissivity of 0.4. Determine the shape factors for all surfaces. E 0.0 L=650 K II >
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