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Posts: 3561
12 years ago
On a cold winter day, the outside temperature is -20°C and the inside temperature is maintained at 20°C. There is a net heat flow to the outside through the walls, roof, etc., of 25 kW. At what rate is the air outside the house gaining entropy as a result of this process?
A) 13 W/K
B) 25 W/K
C) 85 W/K
D) 99 W/K
E) 0 W/K
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wrote...
Educator
9 years ago
ΔS = Δq/T1

ΔS = 25000/(253)

ΔS = 98.9 W/K (approx 99 W/K)
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