evolving the rt/retro/emag valve

[Smoken]

so set your input to about 600psi, and file your on/off pin EVER SO SLIGHTLY (to increase reactivity), and you have yourself one kick*** setup

[athomas]

Originally posted by Patron God of Pirates
Air pressure at sea level is 14.7 lbs. 6 psi would be vacuum. I think Tom was having some fun with you.

The 6psi is measured relative to the surrounding pressure. At sealevel, if you filled the air tank to 6psi, you would really have (6psi + 14.7psi = 20.7 psi). The gauge would still read 6 psi.

Now to the topic.

The air heats when a high volume of air is rapidly expanded from a small passage to a large chamber. The only way to prevent this would be to make the air passages larger. That way it would be more of a movement of existing air than compressed air filling a large empty space.

[Smoken]

air heats when a high volume of air is rapidly expanded from a small passage to a large chamber

Actually ( if I understand my Physics right), when the air rapidly expands it cools down. The rise in temperature occurs when the air is compressed as it passes through the small passage ways in the gun. It's like if you fill a compressed air tank it gets hot; but if you open the valve on the tank and let it drain, it gets condensation on it.

[athomas]

Originally posted by Smoken


Actually ( if I understand my Physics right), when the air rapidly expands it cools down. The rise in temperature occurs when the air is compressed as it passes through the small passage ways in the gun. It's like if you fill a compressed air tank it gets hot; but if you open the valve on the tank and let it drain, it gets condensation on it.

You are partly correct.

Air cools as it decompresses and heat as it is compressed. The bottle will cool as it is emptied because it is decompressing. The bottle will heat up when it is being filled because the air going into the bottle is compressing once it reaches the bottle.

The air chamber in a mag heats because the air going into the front chamber is recompressed once it gets there. The faster it compresses, the higher the temp. The bottle temp decreases because it is decompressing at the same time. The bottle decompresses so little that the temp drop is hardly noticable.

The total number of calories transfered from cold to hot in the air chamber should be equal to the total number of calories transfered from hot to cold in the bottle (not counting losses).

I hope this makes sense. It was a little confusing the first time I wrote it.

[SnapShot]

the human body is constantly at homeostasus (Homeostasus-a constant temperature of 98.6 degrees)
we could make a mag air system that will have a homeostasus air "dump" chamber that would read the inside temperature of the tank, and then either heat it or cool it somehow. Wouldn't this eliminate the problem?

[athomas]

Originally posted by SnapShot
the human body is constantly at homeostasus (Homeostasus-a constant temperature of 98.6 degrees)
we could make a mag air system that will have a homeostasus air "dump" chamber that would read the inside temperature of the tank, and then either heat it or cool it somehow. Wouldn't this eliminate the problem?

Its not the temp of the tank that causes the temp change in the valve chamber. Its the transfer of energy during decompression that takes heat from the tank and gives it to the air leaving the tank. The compressed air gains energy (not in the form of heat). The recompression in the chamber causes the energy in the compressed air to be released in the form of heat.

[SnapShot]

Oh, I understand.
Why does everyone have to QUOTE each other?! It almost like your hanging on every word I type! Quoting is the worst thing to happen to AGD! thats how arguments are started, and then people get banned! that's my view on the quote thing.

[athomas]

Quotes allow you to answer specific posts within a thread. There is no question as to which post the answer is directed at, especially if the thread has diverted from its original topic.