Heat Engine Efficiency: How Ice Water Affects Performance

AI Thread Summary
Mixing ice water with hot water can bring the two reservoirs closer to the same temperature, which impacts the mechanical and thermodynamic efficiency of a heat engine. The Carnot efficiency, defined by the temperature difference between the hot and cold reservoirs, will decrease if the temperatures are too similar. This reduction in temperature difference results in lower ideal efficiency, as the Carnot efficiency is maximized when the temperature difference is greatest. Understanding the expression for Carnot efficiency is crucial for analyzing these changes. Overall, the efficiency of a heat engine is significantly influenced by the temperature of its reservoirs.
WazapMe
Messages
2
Reaction score
0
Thread moved from the technical forums to the schoolwork forums
Consider mixing ice water with the hot water and vice versa so that the two reservoirs are closer to the same temperature. What will happen to the mechanical/thermodynamic efficiency and ideal Carnot efficiency of a heat engine?
 
Physics news on Phys.org
Is this a homework question? Are you familiar with the expression for the Carnot efficiency of an engine?
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »
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 'Trying to understand the logic behind adding vectors with an angle between them'

Thread 'Trying to understand the logic behind adding vectors with an angle between them'

My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
View full post »

Similar threads

Efficiency of Stirling Cycle - Is it the same as the Carnot Engine?
Replies
14
Views
1K
The Mystery of Heat Loss: Examining Ice Melting Without Heat Loss
Replies
11
Views
2K
How much ice to cool down this water?
Replies
17
Views
5K
How Much Water Can a 1KW Carnot Engine Freeze in 5 Minutes?
Replies
3
Views
1K
How much ice is melted in a Carnot engine using a hot and cold reservoir?
Replies
4
Views
3K
Confusion about whether to use the specific heat of water or ice
Replies
4
Views
2K
Obtaining work from two bodies by a heat engine
Replies
2
Views
2K
Engine working between multiple temperature baths worse than Carnot
Replies
1
Views
1K
Regarding efficiency of heat engines
Replies
3
Views
1K
Clausius-Clapeyron equation and absorbed heat
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top