Question

c. Based on the analysis above, what can you conclude about the heat-transfer resistance offered by the hydrodynamic boundary layer? bulk air flow $T_infty = 20^circ C$ q loss boundary layer, h = 50 W/m$^2$-K T$_1$ = ? q stainless steel k$_s$ = 16 W/m-K L = 1.6 cm electrical resistance heater (hot plate) T$_2$ = 250$^circ$C

          c. Based on the analysis above, what can you conclude about the heat-transfer resistance offered by the hydrodynamic boundary layer?
bulk air flow
$T_infty = 20^circ C$
q loss
boundary layer, h = 50 W/m$^2$-K
T$_1$ = ?
q
stainless steel
k$_s$ = 16 W/m-K
L = 1.6 cm
electrical resistance
heater (hot plate)
T$_2$ = 250$^circ$C

c. Based on the analysis above, what can you conclude about the heat-transfer resistance offered by the hydrodynamic boundary layer?
bulk air flow
Tinfty = 20^circ C
q loss
boundary layer, h = 50 W/m^2-K
T1 = ?
q
stainless steel
ks = 16 W/m-K
L = 1.6 cm
electrical resistance
heater (hot plate)
T2 = 250^circC

Added by Nicole G.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Supreeta N

11/30/2023

Step 1

Substituting the given values, we get: q = 50*(250-20) = 11,500 W/m^2 Show more…

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A stainless steel plate 1.6 cm thick rests on top of a hot plate, which is maintained at 250 degrees Celsius. Air flows over the top surface of the plate to provide a convective heat-transfer coefficient of h = 50 W/m^2*K. The air temperature is maintained at 20 degrees Celsius. a) What is the heat flux through the stainless steel plate, in W/m^2? b) What is the temperature at the top surface, T1, of the stainless steel plate? c) Based on the analysis above, what can you conclude about the heat transfer offered by the hydrodynamic boundary layer?