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1. |
The temperature distribution at a certain time instant through a 50 cm thick wall is prescribed by the relation
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A. | nWhere temperature t is in degree Celsius and the distance x in meters has been measured from the hot surface. If thermal conductivity of the wall material is 20 k J/m hr degree, calculate the heat energy stored per unit area of the wall |
B. | 4100 k J/hr |
C. | 4200 k J/hr |
D. | 4300 k J/hr |
E. | 4400 k J/hr |
Answer» B. 4100 k J/hr | |