(Heating Transfer)
- A wall with a heat transmission coefficient of 2 W / mK; thickness, width and height values are all 1 m (wall thickness 1 m and heat transfer area 1 mx 1 m = 1 m ^ 2) In the continuous regime, the relevant wall with inner surface temperature of 2000 K and outer surface temperature of 1000 K , unit Calculate the heat passing in time.
(Admissions: one dimensional heat conduction and constant heat conduction coefficient in the wall)
Given | |
1 | Heat transfer coefficent - k = 2 W /mK |
2 | Area of wall- heat transfer area = 1 m^2 |
3 | Thickness of wall - L = 1 m |
4 | Temperature of inner surface = T1 = 2000 K |
5 | Outer surface temperature = T2 = 1000K |
To find out Heat transfer -- | |
Ans | |
Heat transfer due to condution | |
Qcon = k A dT / L | |
= k A (T1-T2)/ L | |
= 2 x 1 x (2000-1000) / 1 | |
= 2 x 1 x 1000 | |
= 2000 Watt | |
Thus heat passing in time = 2000 Watt |
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