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Checked whether the lumped system analysis is suitable OIf it is suitable, determine the temperature of the copper block at t=5,10 and 20 min after the immersion

Checked whether the lumped system analysis is suitable OIf it is suitable, determine the temperature of the copper block at t=5,10 and 20 min after the immersion

Elements Of Electromagnetics
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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i+ %33 0 13:32 HEAT TRANSFER HW3_2020 - Kaydedildi Note you can check these equation from the text boks as well. w m md w HW6 A solid copper sphere of 10 cm diameter [ p=8954 kg/m³, C,=383 J/(kg K), k=386 W/(mK)] initially at a uniform temperature Ti=250 C, is suddenly immersed in a well stirred fluid which is maintained at a uniform temperature Tinf-50 C. The heat transfer coefficient between the sphere and the fluid is h=200 W/(m²K) ww a) Checked whether the lumped system analysis is suitable b) If it is suitable, determine the temperature of the copper block at t=5,10 and 20 min after the immersion wmw m w w ww HW7 0.1 m thick brick Wall [a=0.5x10-6 m²/s, k=0.69 W/(mK) and p=2300 kg/m³] is initially at T-230 C. The wall is suddenly exposed to a convective environment at Tinf-30 C with a heat transfer coefficient h=60 W/(m²K). By using serial solution determine a) The center temperature at 1/2 , 2 and 4 h after exposure to the cooler environment b) The surface temperature at ½ and 2 h c) Energy removed from the plate per square meter during 1/h hour
Transcribed Image Text:i+ %33 0 13:32 HEAT TRANSFER HW3_2020 - Kaydedildi Note you can check these equation from the text boks as well. w m md w HW6 A solid copper sphere of 10 cm diameter [ p=8954 kg/m³, C,=383 J/(kg K), k=386 W/(mK)] initially at a uniform temperature Ti=250 C, is suddenly immersed in a well stirred fluid which is maintained at a uniform temperature Tinf-50 C. The heat transfer coefficient between the sphere and the fluid is h=200 W/(m²K) ww a) Checked whether the lumped system analysis is suitable b) If it is suitable, determine the temperature of the copper block at t=5,10 and 20 min after the immersion wmw m w w ww HW7 0.1 m thick brick Wall [a=0.5x10-6 m²/s, k=0.69 W/(mK) and p=2300 kg/m³] is initially at T-230 C. The wall is suddenly exposed to a convective environment at Tinf-30 C with a heat transfer coefficient h=60 W/(m²K). By using serial solution determine a) The center temperature at 1/2 , 2 and 4 h after exposure to the cooler environment b) The surface temperature at ½ and 2 h c) Energy removed from the plate per square meter during 1/h hour
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