Now on a 'pressure' note involving sound... there is a company
out here that has a patient on using sound standing waves in a
cavity resonance mode. Taping this cavity at low and high points
will produce low and high pressure ports. This 'solid' state no
moving parts device can be used as a compressor but not sure
what the COP is on it.. or efficiency of the unit. Very neat type of
device though.. someday I'm sure this device's principles will
used in heat pumps, airconditioners in cars/home and refrigerators.
Also could even be used to replace small engines, forced air,
etc etc...
v/r Ken Carrigan
>I believe that if you will take the time to go to the library and find a
>book on old steam engines and boilers you will find the widely accepted
>rule that one (1) gallon of water will make 1700 gallons of steam at
>atmospheric pressure. I was taught that by my grandfather back when I was
>a little kid and have never forgotten it. Norm
>
>Kenneth Carrigan wrote:
>
>> This somewhat follows the thermodynamics laws of PV=nRT or
>> Boyles and Charles law combined. P=pressure, V=Volume,
>> n= number of moles, R= gas constant (.0821) and T is Temperature
>> in Kelvin. However, I do not see that 1676 times expansion. With
>> only temperature changing and pressure - open to atmosphere.. the
>> volume change would be on the order of 212F/70F or 3 times the
>> expansion when it boils? Unless we are talking about something
>> else like splitting the water molecule into O2 and H2... which would
>> be quite an expansion! I think Keely split the water molecule into
>> Hydrogen and Oxygen.. maybe even futher.. like the bubble in
>> sonoluminescence where it actually glows blue at 10,000 degrees
>> just from sound waves focused.
>>
>> v/r Ken Carrigan
>>
>> >Hi Boyd!
>> >
>> >Thanks for the interesting information which I did post to the list so
>> >expect some questions..<g>..
>> >
>> >I was most intrigued by your comment about the expansion of water by
>> >1676 times its volume.
>> >
>> >I knew nitrogen going from its cryogenic state to a gas state will
>> >expand 980 times its volume but this was new to me.
>> >
>> >The reason I am so enthralled with it is because of a claim written in
>> >the late 1800's about Keely type stuff from a guy who said there was a
>> >'commonly known' method of producing a mechanically derived pressure
>> >from water.
>> >
>> >Apparently involving cooling in the process but I'd have to look up
>> >the details (only in a small letter to a newspaper which I've posted
>> >here before).
>> >
>> >The guy says he ROUTINELY produced 15-17 psi for his experiments just
>> >by somehow manipulating water mechanically....this is VERY IMPORTANT
>> >and I've not been able to find anyone who has a clue about it.
>> >
>> >Why? Because he said that using this same mechanical technique he
>> >could easily generate any pressure so desired simply by scaling up the
>> >device.
>> >
>> >It was apparently a very small table top unit that produced the 15-17
>> >psi.
>> >
>> >Do you have any thoughts on this???
>> >=============================
>> >---Boytrell@aol.com wrote:
>> >
>> >Today we have vacuums as high as 28.5 inches of Hg. Thats not
>> >difficult to believe when you know that when water first starts to
>> >boil it expands 1676 times, so it's easy to see that when it
>> >condenses it must contract 1676 times.
>> >
>> >_________________________________________________________
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>> >
>> >
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