Psi Scuba
Psi Scuba
If I have a 80 cu ft 3000psi scuba tank and I use to fill a 72 cu in 3000 psi tank what is left in the scuba?
I bought a 80 cubic foot 3000 psi aluminum scuba tank and I'm going to use it to fill a 72 cubic inch tank for paintball gun. After filling the smaller tank one time how much pressure should be in each of the tanks? I am using a device that will allow the pressure in each to equalize which will fill the smaller tank.
Starting with the math:
An 80 Cft tank would be 12 x 12 x 80 = 11,520 Cubic Inches. If you multiply that by 3000 psi, you get 34,560,000.
The new combined volume the gas will occupy is 11,592 (11520 plus 72) . So, 34,560,000 divided by 11,592 means that each tank will be about 2981 psi.
That is the theory -- the actual will be somewhat different. Why? As you transfer the gas, the temp in both containers will change and that will change pressures. Second, the hose will contain some gas and, after you equalize pressure in both cylinders, you will clsoe them leaving a pressurized fill hose. You will then ven some of that air.
All of that said:
a) Be certain the 72 inch cylinder is rated to at least 72 psi, that it is within hydro, has been inspected and is in very good condition (i.e., nothing other than purely cosmetic issues). Verify that the fill rate you are considering does not exceed the manufacturer specs.
b) Fill the tank super slowly. I would probably do that by hooking the two to the hose. Open the big tank but keep the small tank closed. Close the big tank. Slowly open the small tank. This will let some of the air in the hose into the small tank. Close the small tank. Repeat as needed.
c) Ideally, keep the small tank submerged in a container of water. This will help keep it cool.
d) Exploding scuba tanks can be lethal -- this is not something to fool around with.
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Most people know what a scuba tank seems, but few people really know what exactly or how to use. If you are interested about diving, but do not really know much about this essential piece of equipment high, you may want to keep reading.
Most people think tank scuba diving contains pure oxygen, but in reality it is not. A scuba tank is actually about 21% oxygen and 79% nitrogen, which is quite like the air we breathe. In fact, if the scuba diving tank is filled with pure oxygen, which is toxic when brought to shallow depths. And therefore to leisure travel, the compressed air necessary.
The typical recreational scuba diving tank is usually aluminum, with nearly 80 cubic feet of compressed air. A scuba diving tank normally is two meters tall with a diameter of 1 / 2 foot. Normally, scuba diving tanks are filled with a minimum of 2000 psi and most of the 3000 psi of gas pressure. To maintain quality standards, scuba diving tanks are monitored by the U.S. Department of Transportation.
Using a scuba tank is not that difficult, here are some reminders:
1. I have the scuba tank filled by a reputable dive shop.
2. Check if the compressor intake pipe of the store is located in an area of clear and fresh air. Select another store if they are placed somewhere fumes could enter inside the pump.
3. Never leave the scuba diving tank inside a parked car as the heat may cause it to expand and explode.
4. When traveling, store the tank in the trunk of the car, with the valve to the passengers. In the event that the valve damage, the tank will be propelled away from passengers.
5. Before using the tank, remove the protective rubber valve and check O-ring. If damaged or missing, replace it.
6. Attach a buoyancy compensator in the body of the tank.
7. Attach the first stage of your regulator valve tank scuba diving.
8. Turn left knob to open the valve and then replace the back half.
9. Take note of the tank pressure monitoring indicators.
10. As you dive, always check the air pressure left in the tank.
11. Stop scuba diving way beyond the minimum point of pressure in the tank.
12. After snorkeling, remove all accessories of the tank and store in a cool place.
The management of a scuba tank is easy if you know what to do. Enjoy diving!
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Article Source: ArticlesBase.com - All About Scuba Diving Tanks
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