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Sound Increases the Efficiency of Boiling
hessian writes "Scientists at the Georgia Institute of Technology achieved a 17-percent increase in boiling efficiency by using an acoustic field to enhance heat transfer. The acoustic field does this by efficiently removing vapor bubbles from the heated surface and suppressing the formation of an insulating vapor film."
The amount of efficiency increase might be novel, or the input energy to remove the bubbles might be, but using an "acoustic field" is nothing new in industry. Lots of industrial systems use some form of vibrator to decrease bubble to surface adhesion for increased fluid heating speed and thus, efficiency. They also frequently use such systems to reduce surface foaming, especially in conjunction with vacuum systems to prevent fluid foaming or excess dissolved bubbles / gases.
Sounds hot.
Anyone who BOILS BACON (nature's perfect food) really shouldn't be providing any culinary advice.
anyone who isn't open to cooking food in more than one method really shouldn't be providing any advice.
Balderdash!
I find your ideas interesting and would like to subscribe to your newsletter, but I am *never* eating marshmallows at your place.
But a heard pot boils real good.
I'm sure someone would enjoy it.
"You should always go to other people's funerals; otherwise, they won't come to yours." -- Yogi Berra
There have been units around for years both for home use cleaning jewelry, etc, and for use in various industrial/manufacturing processes, including being used in electronics manufacturing, where I've seen them used to clean PCBs and other electronic assemblies & parts after they undergo a "dirty" manufacturing step like wave-solder, in order to remove all flux, dirt, and oils.
They used a heated tank of solvent that was agitated by ultrasound transducers to greatly increase cleaning ability and decrease cleaning time. The first time I saw one like that was in the late 1970s. I worked in the government/military-related electronics and aerospace industry.
Strat
Progressivism (aka US 'Liberalism'): Ideas so good they need a police/surveillance-state to enforce.
of the acoustic effects on disk arrays (and a Dtrace video that showed shouting having a detrimental effect on drive efficiency).
wouldn't a pressurized vessel (cooker) have the same end result (in that vapor layer formation is prevented or retarded?)
or as someone else mentioned, using microwaves to boil/heat faster?
is the 17% efficiency gain taking into account the energy needed to blast the liquid with Eminem?
the 'article' looks like a fluff piece and the comments say much the same, nothing to see here move along.
Unix, an obscure operating system developed by bored researchers in an attempt to get a better game playing experience.
Grandparent poster appears to be American. They don't have anything that people from the rest of the world would even recognise as food. Americans can only detect two tastes - high fructose corn syrup, and hot sauce.
American bacon is bad enough even before they slice it to molecular thickness and fry it in cheap crappy oil until it's quite thoroughly burnt.
it always amuses me when foreigners judge america by our lowest common denominator crap. you know, the stuff that's only available here due to our sprawling machine of industry which europeans apparently have a fetish for, since they can't seem to get over it when sublimating their envy through these pathetic insults.
for anything whatsoever that you attach cultural importance to, america can do it better; you'll just never find it at the shitty supermarket or wal*mart, which any native, who isn't penniless or functionally retarded, knows to avoid.
except cheese. i don't know what's up with that, but i'm sure that if we wanted to, we could.
"They were pure niggers." – Noam Chomsky
Anyone using this in industrial refrigeration?
I can't help but think of deliberately running a fancoil unit with an unbalanced fan so it vibrates the evaporator coil.
Or, possibly mounting piezoelectric "shakers" to the evaporator tubes and deliberately manufacturing them to resonate.
Thanks, Hessian, for bringing this up. Anything I can do to increase efficiency in refrigeration is of great interest to me.
There are a lot of unpublished tricks I have come across that significantly increase refrigeration efficiency, but have not implemented because the expense of dealing with the increased sophistication was greater than the expense of energy loss in the simple system. This trick you showed me will make an interesting study.
I will keep it in the lab for now, as I am sure I will also face metal fatiguing and work-hardening issues.
"Prove all things; hold fast that which is good." [KJV: I Thessalonians 5:21]
I hesitate to ask what it sounds like when you stand next to a boiler being blasted with energetic sound waves.
American bacon is bad enough even before they slice it to molecular thickness and fry it in cheap crappy oil until it's quite thoroughly burnt.
I agree regarding the thickness (bacon tastes better with at least double the "normal" US thickness), but no one in America fries bacon in oil, crappy or otherwise. That's the fat from the bacon itself, and its spattering browning goodness is what creates the deliciousness.
Your portrayal of the US is extremely one sided. There is much more to American cuisine than corn syrup and hot sauce. What about fat and rendered beef protein?
You could bake same corn syrup and hot sauce and top it with fat and rendered beef protein and have some delicious pizza. Or you cut mix some rendered beef protein with hot sauce, batter it in a corn/ corn syrup mix and deep fry it in fat. The options are endless.
Who the hell told Uncle Ruckus (no relation) about slashdot?
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