Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 1 (Q.No. 43)
43.
The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K= 0.04 W/m.°K and thickness 0.16m is 10 W/m2. The temperature of the inside wall is - 5°C. The outside wall temperature is
Discussion:
15 comments Page 2 of 2.
Nihar said:
1 decade ago
dT should be T-5 and the answer comes out to be 45°c. Please comment.
Sushil rajoria said:
1 decade ago
How you keep dt = (T+5) in presence of (T-5).
Rutu patel said:
1 decade ago
In equation dt gives the temperature difference. So it doesn't make any different weather you add 273 or not.
Shan Rana said:
1 decade ago
@Vishal.
How you keep units consistent, here Temp is in Degree C and conoductivity in W/m. K ?
How you keep units consistent, here Temp is in Degree C and conoductivity in W/m. K ?
Vaishak said:
1 decade ago
q = kdt/dx.
q = 10W/m^2.
K = 0.04.
10 = 0.04(t+5)/0.16.
t = 35deg c.
q = 10W/m^2.
K = 0.04.
10 = 0.04(t+5)/0.16.
t = 35deg c.
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