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Want tea? Coffee? Want to make it yourself? In a hurry? Can't wait for the water to boil?
Boil it faster with the VacuuKettle by BUNGCO. The vacuum kettle creates a vcauum over the water, allowing it to come to a boil faster. Adjust the amount of vacuum according the the time you have - no vacuum
for unemployed layabouts with lots of time to wait for the water to boil, all the way to the hardest vaccuum this side of the Hubble for fast moving persons on the go! You will be amazed at how fast your water boils! Works for ramen and matzoh balls too! Order now and receive the BUNGCO InfraBrown Speed Toaster for only $19.95 more!
Matzoh Balls
http://www.foodsubs...tos/matzohballs.jpg
Cooked to near-perfection in the Vacuukettle! [bungston, May 31 2006]
[link]
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The cooking time of tea or coffee depends on the temperature of the water, not on if its boiling or not. bad science? |
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"Bad" is such a pejorative term. |
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Around my shop "BAD" stands for Built As Designed. |
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I'm ordering, but does the water not boil at
a lower temperature ? + |
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I can't remember much of my A level
chemistry, but I'm certain a reaction (of
any kind) is speeded up under pressure. So
if indeed you could generate a significant
vacuum within the kettle (it would
obviously be reinforced and need to be
structurally stronger than the average
Russell Hobbs) it would be possible to heat
the water quicker. |
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You won't be able to pull a vacuum as the air will be replaced with water vapo(u)r. Trust me, I know. |
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It depends how big the kettle is, [egbert]. |
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/You won't be able to pull a vacuum as the air will be replaced with water vapo(u)r./ |
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It is admittedly not a perfect vacuum. However, the vacuum pump runs constantly while the kettle is in action. Generally when the vapor is really coming off fast, beyond the ability of the pump to keep up, the water is boiling and you are done. |
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/does the water not boil at a lower temperature/. It is actually possible to use the Vacuukettle without an external heat source, which makes it much safer than ordinary kettles. |
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The water will actually cool down as it evaporates. You can freeze it if you pump hard enough. |
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The water that has soaked into the leaves may have a lower vapor pressure due to contaminants. This may be a way to confine the evaporation/boiling to the leaves, and to make tea after all. |
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Reading this, I thought about cycling the pressure, then Googled up a reference to an ultrasonic tea extractor. They were going on about reducing tannins and bitterness, which would probably apply to this method as well. |
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The water will boil, but at roughly whatever temperature it was at before you subjected it to a vacuum. Boiling is merely a function of spontaneous vapourisation, based on the energy required to cause molecules to potentiate out of the liquid as vapour. (Hence the low boiling point of water at high altitudes. I think water boils at 78deg C on top of Mt Everest, from memory, because of the reduced atmospheric pressure there). |
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Given there is no provision for application of heat energy in the description of this idea, as it stands, you will have water boiling at room temperature until you destroy the vacuum, at which point you will have water at slightly below room temperature, after the hot molecules have evaporated away. If you continue this process long enough, there will be the problem of freezing, if you are drawing away the vapour, as this idea seems to suggest. |
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Congratulations, you have just created an air conditioner, not a kettle, with this idea. |
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Of course, the heat needed to leach the various chemicals out of tea or coffee is not going to be present in your slightly chilled water, so I imagine your brew will be quite weak. You can achieve the same effect by placing tea or coffee in a cup of tap water and waiting a few minutes. |
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You could always make solar tea, I guess. |
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