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1. |
A steel billet of 2000 kg mass is to be cooled from 1250 K to 450 K. The heat released during this process is to be used as a source of energy. The ambient temperature is 303 K and specific heat of steel is 0.5 kJ/kgK. The available energy of this billet is |
A. | 490.44 MJ |
B. | 30.95 MJ |
C. | 10.35 MJ |
D. | 0.10 MJ |
Answer» B. 30.95 MJ | |