24.53 For fluid flow over a surface, the heat flux to the surface car be computed as dT J = -k- dy where J = heat flux (W/m2), k = thermal conductivity (W/m · K) T = temperature (K), and y = distance normal to the surface (m) The following measurements are made for air flowing over a fla plate that is 200 cm long and 50 cm wide: %3D %3D %3D у, ст 3 5 Т, К 900 480 270 200 If k = 0.028 J/s m K, (a) determine the flux at the surface and %3D (b) the heat transfer in watts. Note that 1 J = 1 W:S.
24.53 For fluid flow over a surface, the heat flux to the surface car be computed as dT J = -k- dy where J = heat flux (W/m2), k = thermal conductivity (W/m · K) T = temperature (K), and y = distance normal to the surface (m) The following measurements are made for air flowing over a fla plate that is 200 cm long and 50 cm wide: %3D %3D %3D у, ст 3 5 Т, К 900 480 270 200 If k = 0.028 J/s m K, (a) determine the flux at the surface and %3D (b) the heat transfer in watts. Note that 1 J = 1 W:S.
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Transcribed Image Text:24.53 For fluid flow over a surface, the heat flux to the surface can
be computed as
dT
J = -k
dy
where J = heat flux (W/m³), k = thermal conductivity (W/m · K),
temperature (K), and y = distance normal to the surface (m).
The following measurements are made for air flowing over a flat
plate that is 200 cm long and 50 cm wide:
T
у, ст
3
5
Т, К
900
480
270
200
If k = 0.028 J/s m K, (a) determine the flux at the surface and
(b) the heat transfer in watts. Note that 1 J = 1 W s.
%3D
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