Why "Cryo" anything?

The reason that liquid Nitrogen is so cheap is that it is an undesired byproduct of making liquid Oxygen, which is in demand. You get liquid Nitrogen by making liquid air (mostly Oxygen and Nitrogen), and then letting the Nitrogen boil off, some of which is collected and sold at little more than distribution cost. You are left with Oxygen, which is what you were after. How long will it be until some enterprising Cryo outfit starts using liquid air, at a lower temperature than liquid Nitrogen, and tells audiophiles that their N2 Cryo'd cables are warmed-over junk.

And regarding NASA...not everything they do is desirable. I prefer my steak on a plate, not from a toothpaste tube.

Did your car's engine sound better than before?

(Just a joke to lighen up the thread.) :)

Aggielaw,

There was a noticeable bloom in the mid rpm range and more valve closing detail in the lows. However, at the upper rpm range it was rather shrill for a time. This did smooth out after several races. But then, maybe my ears just became accustomed to it. As an autophile, cryo'ing is for me.

Naturally, everyone is free to believe what they wish, but some of the sheep shearing I see in this hobby sets new highs in lows. I just took a break from working on my sailboat. If sailors bought into & embraced as much hokum as some audiophiles there would be a lot more lives lost at sea. I offer the following to bring a little truth & direct experience to the discussion.

"Adhesives will melt when cryogenically treated."

Not true. Nothing melts when it gets colder. At least not as long as the universe keep expanding. If/when the universe stops expanding & begins to collapse...then things might melt when they get cold...but that isn't likely to happen for a few billion years yet. Chances are excellent we'll have exterminated oursleves by that time.

No disrespect to Lak intended here..

"FROM JENA LABS"

This dribble from Jena is pure marketing hokum. They use a lot of technical jargon that sounds impressive, but actually says nothing.

"...In the liquid state as we use it, the LN2 is actually much colder than this temperature."

Absolute nonsense. They couldn't afford the science that gets liquid N2 colder.

"Exposing metallic objects to this extreme cold causes beneficial molecular changes to occur..... "

Pure fiction. The molecules don't exist...thus no changes can occur. I'm sure many of you have kids...ask one of them that has had even the most basic chemistry or physics courses.

"Working with LN2 requires very specialized and expensive equipment, and extreme care in process. It is very dangerous, as the cold is so severe that it can result in severe injury from accidental exposure to the liquid.... We feel strongly enough about the musical merits of the treatment, that we gladly make the investment in the equipment, the time, and the safety procedures needed to make the benefits available to our customers."

More marketing dribble. Handling liquid N2 in small quantities requires (typically) a 400# insulated low pressure tank that you dispense out of. From this tank you vent it through a stainless hose into a vacuum bottle (like a Coleman glass-vacuum thermos bottle). From this bottle you can pour it like water into any vessel or equipment you like. Yes it's cold & you have to be careful, but it certainly isn't any more dangerous to handle than many common tasks you do around the house everyday...like cooking & draining pasta. Jena includes this in their marketing hype so that you feel better about paying a healthy price for their 'service'.

Given my familiarity with handling N2 I supposed I could make a few bucks 'cryo treating' various items for folks...but I don't think I could live with myself after taking their money.

Back to reality & working on the boat. :-)

LOL! Very nice. :)