an ideal air conditioner takers heat from room at 70 F and transfers it to the o

Question

an ideal air conditioner takers heat from room at 70 F and transfers it to the out doors which at 96F . FOR EACH JOULE OF ELECTRICAL ENERGY REQUIRED TO OPERATE the air conditioner, how many BTU of heat are removed from the room ?

an ideal refrigerator working btween th and tc has a coefficient of performance given by k

J= 9.478* 10^-4 , BTU= 1.055* 10^3 J


TC (in K) = ??
TH (in K) =??

BTU/J = ???

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2) an ideal heat pump is used to heat a building. the outside t is -5 c and the inside is 22 c . the coefficient of performance as arefrigerator is k= 3.2 , and the heat pump deliver Qh= 7.54 mJ OF HEAT TO THE BUILDING each hour.at what rate (waats) must work be done to run the heat pump?

Qh= 7.54 * 10^6 J , K= 3.2 , k=Qc/w =Qh-w/ w , w=1.795 * 10^6 J


PAWER= ???

Explanation / Answer

You need to convert F--> C---> K using 5/9(F)+32=___C then (___C)+273=___K Next to find K---> K=Tc/(Th-Tc) Then use K=Qc/Win==> K(Win)=Qc Did they give you work? Make sure everythings in SI units too! then convert to BTU

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