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Author Question: A certain Carnot heat pump transfers energy from the outside of a house, where the temperature is ... (Read 109 times)

soccerdreamer_17

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on: Jul 29, 2018
A certain Carnot heat pump transfers energy from the outside of a house, where the temperature is -15C, to the inside of a room where the temperature is 21C.
 
  If this heat pump runs off of electricity, what is the minimum rate at which it uses electrical energy to deliver 150 W to the inside room?

Question 2

An air conditioner with a coefficient of performance of 3.5 uses 30 kW of power. How much power is it discharging to the outdoors?
 
  A) 30 kW
  B) 75 kW
  C) 105 kW
  D) 135 kW
  E) 210 kW


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momo1250

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Reply #1 on: Jul 29, 2018
Answer to Question 1

18 W

Answer to Question 2

D


soccerdreamer_17

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

tandmlomax84

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Reply 3 on: Yesterday
Excellent

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