Since the correlation given in the textbook is so complicated, for convection over a sphere. proposes the correlation to be NUD = 2+ C Re Pr¹/3 used a steel sphere (conductivity of 42 W/m-K) of 20 cm diameter that generates steady 40 W heat. placed it in air flow with 1 m/s where air temperature is 20°C. then measured the steady state tempera- ture of the sphere surface to be 30°C. Based on come up with a new correlation 2 measurements, what is the convection coefficient? 318 W/m²K Using properties at film temperature, what should the value of C be as per assumes m = 0.8? 0.142 What is the temperature at the center of the sphere? 30'38 ℃ calculations if
Since the correlation given in the textbook is so complicated, for convection over a sphere. proposes the correlation to be NUD = 2+ C Re Pr¹/3 used a steel sphere (conductivity of 42 W/m-K) of 20 cm diameter that generates steady 40 W heat. placed it in air flow with 1 m/s where air temperature is 20°C. then measured the steady state tempera- ture of the sphere surface to be 30°C. Based on come up with a new correlation 2 measurements, what is the convection coefficient? 318 W/m²K Using properties at film temperature, what should the value of C be as per assumes m = 0.8? 0.142 What is the temperature at the center of the sphere? 30'38 ℃ calculations if
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Transcribed Image Text:Since the correlation given in the textbook is so complicated,
for convection over a sphere. proposes the correlation to be
NUD = 2+ C Rem Pr¹/³
used a steel sphere (conductivity of 42 W/m-K) of 20 cm diameter that generates steady 40 W heat.
placed it in air flow with 1 m/s where air temperature is 20°C. then measured the steady state tempera-
ture of the sphere surface to be 30°C.
w/m² k
measurements, what is the convection coefficient? 31*8
Based on
come up with a new correlation
Using properties at film temperature, what should the value of C be as per
assumes m = 0.8? 0.142
What is the temperature at the center of the sphere? 30'38 C
calculations if
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