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11 Dec 2019

A heat pump removes 2040 J of heat from the outdoors and delivers3200 J of heat to the inside of a house.
(a) How much work does the heat pump need?
1 ________ J

(b) What is the coefficient of performance of the heat pump?
2 _________

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Beverley Smith
Beverley SmithLv2
12 Dec 2019
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A heat pump is used to heat a house with an interior temperature of20.7° C. On a chilly day with an outdoor temperature of -10.4° C,what is the minimum work that the pump requires in order to deliver1.3 kJ of heat to the house?
in J

an ideal air conditioner takers heat from room at 70 F andtransfers it to the out doors which at 96F . FOR EACH JOULE OFELECTRICAL ENERGY REQUIRED TO OPERATE the air conditioner, how manyBTU of heat are removed from the room ?

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

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


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

BTU/J = ???

------------------------------------

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 asarefrigerator is k= 3.2 , and the heat pump deliver Qh= 7.54 mJ OFHEAT TO THE BUILDING each hour.at what rate (waats) must work bedone to run the heat pump?

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


PAWER= ???

an ideal air conditioner takers heat from room at 70 F andtransfers it to the out doors which at 96F . FOR EACH JOULE OFELECTRICAL ENERGY REQUIRED TO OPERATE the air conditioner, how manyBTU of heat are removed from the room ?

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

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


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

BTU/J = ???

------------------------------------

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 asarefrigerator is k= 3.2 , and the heat pump deliver Qh= 7.54 mJ OFHEAT TO THE BUILDING each hour.at what rate (waats) must work bedone to run the heat pump?

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


PAWER= ???

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