h a l f b a k e r yLeft for Bread
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You put the coffee in this ball with angled holes in it. When a
column of boiling water is pumped upwards from the coffee
fountain thing it balances and rolls while the boiling water shoots
into the ball, steeps into the coffee and drains out with coffee
bean juice.
This would accomplish
the following:
1- A ball rolling on top of a column of boiling water.
2- Coffee.
[link]
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NOTE: The column of water would be 3 or 4 columns adjusted
to balance the ball on the top, you get what I mean. |
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This would be a "ping-pong ball on water jet" thing, then ? |
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Yyyyyyyeeeeeeeesss. Exactly. But with coffee. And the
water's boiling. |
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//The column of water would be 3 or 4 columns // So, like [19]'s
scrabble board, then? |
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Hey it just occurred to me there may be a utilitarian reason
for this. You could glance across the room and see the color
of the column of water. If it's dark, the coffee's done. |
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If the water is actually at 100C, then the column will be
discontinuous and won't effectively support the sphere because
of bubbles formed as it boils. |
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Your water jet needs to be at 99.9°C. |
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Good luck with the health and safety assessment ... |
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I think you could get enough force from the pump to
compensate for any lack of lift due to any bubbles. The
force lifting the ball is the pump via the water stream so
even if it was pure air you'd still get the lift you needed if
you cranked the pump enough. In other words, it's not
floating atop that column, it's being thrown into the air. |
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And yes, it would be somewhat more dangerous than the
standard coffee maker which is certainly a good thing.
Mornings should be a little dangerous. |
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Mornings without coffee if it doesn't work are definitely
dangerous. |
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The water needs to be considerably below 100 C because
the best coffee is made at a lower temperature due to the
solubility of different substances in it at different
temperatures. I've heard 86, but that sounds a bit low. |
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The jet is going to shed thermal energy very quickly, so the water striking the ball certainly won't be at 99C if the column is of any height. |
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A larger diameter, lower-pressure column where the ball is only lifted a short distance might be better. |
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If 86C is the ideal temperature for coffee, then why Espresso ? That uses steam. |
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