The black grille on the back of a refrigerator has a surface temperature of 35¬¨¬®‚Äö√†√ªC with a surface area of 1 m2. Heat transfer to the room air at 20¬¨¬®‚Äö√†√ªC takes place with convective heat transfer coefficient of 15 W/Km^2. How much energy is removed during 15 minutes of operation?$

The black grille on the back of a refrigerator has a surface temperatu

1.	The black grille on the back of a refrigerator has a surface temperature of 35¬¨¬®‚Äö√†√ªC with a surface area of 1 m². Heat transfer to the room air at 20¬¨¬®‚Äö√†√ªC takes place with convective heat transfer coefficient of 15 W/Km^2. How much energy is removed during 15 minutes of operation?$
A.	202.5 kJ
B.	212.5 kJ
C.	222.5 kJ
D.	232.5 kJ
Answer» B. 212.5 kJ

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