Author Question: A heat pump has a coefficient of performance that is 60 of the Carnot heat pump coefficient of ... (Read 122 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
A heat pump has a coefficient of performance that is 60 of the Carnot heat pump coefficient of performance. The heat pump is used to heat a home to 24.0C during the winter with the low temperature reservoir at the outdoor temperature.
 
  At which outdoor temperature would it be more efficient to add the energy directly to the interior of the home than use it to run the heat pump? A)
 
  -25.2C
 
  B)
 
  -154C
 
  C)
 
  -40.0C
 
  D)
 
  -83.4C
 
  E)
 
  -4.00C

Question 2

Which of the following cannot occur?
 
  A)
 
  +  + + v
  B)
 
    2
  C)
 
  + + p  K+ + +
  D)
 
  - + p  n +  
  E)
 
  -  - + p



ultraflyy23

  • Sr. Member
  • ****
  • Posts: 312
Answer to Question 1

B

Answer to Question 2

E



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

For a complete list of videos, visit our video library