« previous next »

Author Question: A heat pump has a coefficient of performance that is 60 of the Carnot heat pump coefficient of ... (Read 121 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
on: Jul 29, 2018
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
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

E


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Visualization of heat exchange in an ectotherm and an endotherm. Visualization of heat exchange in an ectotherm and an endotherm.
The integumentary and nervous systems work together to recognize specific sensations, such as heat ... The integumentary and nervous systems work together to recognize specific sensations, such as heat ...
L-carnitine is a popular dietary supplement. Notice the claims of improving athletic performance and ... L-carnitine is a popular dietary supplement. Notice the claims of improving athletic performance and ...
Mechanisms of Heat Transfer Mechanisms of Heat Transfer
Effects of Retrieval Practice on Predicted and Actual Memory Performance Effects of Retrieval Practice on Predicted and Actual Memory Performance
Effects of Retrieval Practice on Predicted and Actual Memory Performance Effects of Retrieval Practice on Predicted and Actual Memory Performance
Video: Dietary Cholesterol & LDL

For a complete list of videos, visit our video library