All Questions
42
questions
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At what velocity and pressure will water enter a Vacuum chamber?
Assuming we have a chamber with a near-perfect vacuum, and we are at sea level. If the chamber is 4 feet long and 2 feet wide, we forced it underwater and opened a valve that was 1 inch in diameter to ...
0
votes
0
answers
112
views
Pressure of a vacuum left by melted ice
Let's assume we have a completely sealed uncompressible container filled with ice (without no air gap between the ice and the cap).
At room temperature, when ice melts in water, as the density of ...
- 163
3
votes
1
answer
294
views
Automatic chicken waterer problems [closed]
I am trying to build a 5 gallon bucket style chicken waterer.
My bucket has an o-ring airtight lid with pour spout and cap.
I have drilled a 1/2 inch hole about an inch up from the bottom.
The bucket ...
- 31
0
votes
1
answer
265
views
Will water in a vacuum chamber become cold fast after being heated?
Imagine a vacuum chamber with:
a glass container inside filled with water;
a copper tube that penetrates a little bit in and a little bit out of the chamber and enters the glass container;
After all ...
0
votes
1
answer
78
views
Temp and state change of water in a perfect void
Let's say that I was able to instantaneously transport spherical volume of water into a perfect vacuum, with no external gravity present, and no light or heat sources present - a void
Would the ...
- 125
1
vote
2
answers
2k
views
Does it take more energy to evaporate a litre of water in a vacuum, and if so, why?
I got this information and want to know if it is correct and if so, why does it take more energy to evaporate water in a vacuum compared to no vacuum?
Vacuum:
it takes 4200 J/kg to increase the temp ...
- 113
0
votes
1
answer
332
views
How long does it take the water in a pan to evaporate with 40 ° C?
I have a problem.
I would like to calculate after how many minutes / hours the water in a $50$ cm diameter pot, $50$ cm high, evaporates completely.
The temperature is constant, $40^o$C
the pressure ...
- 103
0
votes
1
answer
105
views
Does increasing water pressure change how high a column of water can be lifted in a vacuum?
If I take a 1 inch square pipe and submerge one end in water and at the other end I create a vacuum, does the height the column of water is lifted in the pipe vary with the depth of the submerged end? ...
1
vote
3
answers
263
views
Moving Water Creates a Vacuum?
I have a question about Bernoulli's principle as it pertains to water. A scuba diver instructor says that in order to back fin (swim backwards), you just need to displace water behind you and that ...
- 11
0
votes
1
answer
822
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How long and how much water will boil at room temperature in a vacuum chamber
Let's say, I have a vacuum chamber of diameter D and height h. I have filled 1/10th of the chamber with water. Now I have two questions:
1.How long and how much water will boil or evaporate if the ...
- 165
0
votes
3
answers
592
views
Can hot water cool down through radiation?
What everyone tells me is that hot water transfers its energy to air. But I have also heard of water freezing down in the vacuum of space. How does that happen?
-1
votes
1
answer
305
views
Is it possible to drain all oceans' water to space? [duplicate]
Assuming:
That I have an ideal straw (a very long pipe) from the ocean to space;
That the straw (pipe) is ideal (will not break);
That i can pump all the air from the pipe creating vacuum inside the ...
- 11
3
votes
4
answers
2k
views
Can someone explain why there is water in this vacuum chamber?
I work at a water treatment plant that uses a vacuum system to pull the water into the filters and backwash the filters. In the middle of the vacuum system there is the vacuum chamber. What I don't ...
- 31
-1
votes
2
answers
163
views
If it was heated up enough, could water-soaked wood in a vacuum catch on fire? [closed]
Obviously you can set a damp piece of wood on fire- not exactly revolutionary. I specifically mean if the wood was in a perfect vacuum. It doesn't matter where the heat comes from-just say the amount ...
- 2,650
4
votes
5
answers
5k
views
Since water boils at room temperature in a near vacuum, is it possible to use this to generate electricity in some way?
This may be a blatantly obvious question but I've never heard about such a thing happening. Could this be possible in some way using a vacuum chamber to boil the water and spin a turbine?
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