This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A certain Carnot heat pump transfers energy from the outside of a house, where the temperature is ... (Read 103 times)

soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

momo1250

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 29, 2018
Answer to Question 1

18 W

Answer to Question 2

D


soccerdreamer_17

  • Member
  • Posts: 552
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Basic overview of energy and human life. Basic overview of energy and human life.
Energy Coupling Energy Coupling
A visual inspection indicated that this pump cover was worn. A visual inspection indicated that this pump cover was worn.
Rich Energy Deposits Rich Energy Deposits
Potential energy Vs. Kinetic energy Potential energy Vs. Kinetic energy
Dash Warning Lights: Coolant Temperature Light Dash Warning Lights: Coolant Temperature Light
Video: Energy sources - types

For a complete list of videos, visit our video library