How Much Energy is Needed to Convert Water to Ice Using a Carnot Refrigerator?

AI Thread Summary
To convert 50 kg of water at 0 degrees Celsius to ice at the same temperature using a Carnot refrigerator, the energy required is based on the latent heat of fusion. The latent heat of fusion for water is approximately 334,000 J/kg, meaning 16,700,000 J of energy must be removed to freeze the water. The Carnot efficiency must also be considered, as it affects the total energy input needed for the refrigerator to operate. The temperature difference between the water and the room influences the energy calculations. Understanding these principles is crucial for solving the problem effectively.
vincristine
Messages
1
Reaction score
0

Homework Statement


a carnot refrigerator takes heat from water at 0 degree celsius and rejects heat to a room at 27 degree celsius. if 50kg of water at 0 degree celsius is converted to ice at 0 degree celsius. how much energy must be supplied to the refrigerator?

Homework Equations



Sorry, i don't know how to do it... Please help me. i have an exam this coming april and one of the question given in their practise set is regarding this matter.

The Attempt at a Solution



Sorry
 
Physics news on Phys.org
Ever heard of latent heat? try finding an equation to do with this
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Carnot Refrigerator Efficiency and Energy Calculations | Homework Help
Replies
2
Views
7K
How Much Energy is Needed for a Carnot Refrigerator to Convert Water to Ice?
Replies
3
Views
7K
How Much Water Can a 1KW Carnot Engine Freeze in 5 Minutes?
Replies
3
Views
1K
Derive the energy required for an ideal refrigerator
Replies
16
Views
2K
Entropy and Carnot refrigerators
Replies
20
Views
3K
AZING! How does the Carnot cycle affect refrigerator efficiency?
Replies
6
Views
9K
Compute work in Carnot Refrigerator
Replies
3
Views
3K
Power of an Ideal Refrigerator - Carnot Engines
Replies
6
Views
6K
Heat question -- Ice cube in a cup of water....
Replies
7
Views
10K
Carnot refrigerator cost problem
Replies
1
Views
6K

Hot Threads

Recent Insights

Back
Top