Question

An ideal heat pump is used to heat a room that is at 300 K. The outdoor temperature is 263 K. Recall that for a heat pump, ???????? = ?? ??−?? .

a. If the ? = 300 J, calculate the heat pumped into the room. (2 pts) ?? =______________ J

b. Calculate the heat extracted from the outside air. (1 pts) ?? = _____________J

c. Calculate the entropy change in the outside air. (2 pts) Δ???? = ____________ J/K

d. Calculate the entropy change in the inside air. (2 pts) Δ??? = ____________ J/K

e. How does Δ??? compare with Δ????? Are you surprised? Is this consistent with the Second Law of Thermodynamics? An answer consisting of 5 to 10 sentences is enough. (2 pts) ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… ………………………………………………………………………………………………………  

f. If the heat pump reversed, it will act as an air conditioner. Calculate the coefficient of this air conditioner. (1 pts) ??? = _____________

Answer 1