Depending on the flow rate. A G tank holds 5,300 liters of Oxygen. so just divide that buy the rate you are setting it to flow at. A non-rebreather at 15 lpm should last you close to 6 hrs. normally though the tank should be refilled before it gets down to around 200 psi, just to be safe.
Because they're not used in an 1:1 ratio. One cylinder is made bigger so that they'll still end up empty at about the same time.
It all depends on the size of the cylinder.
It depends on the size of the gas cylinder - they come in a variety of sizes and weights.
its a gas you cant weigh it
No. Oxygen and Nitrogen molecules are not the same size. China has a railroad that rides along at 20,000 feet in Tibet. They pump air into the cars. The cars have filters. Nitrogen gas leaves through the filters and oxygen remains in the railroad cars. By using simple pumps and filters they increase the amount of oxygen in the cars. If oxygen and nitrogen were the same size, it would not work.
30
An "E cylinder" is a particular size of oxygen cylinder. 29" tall just under 5" diameter with a capacity of 680 liters of oxygen.
This will depend upon the gas flow rate. A size E oxygen cylinder in the UK contains 680 litres of compressed gas. At a flow of 10L/min for medical emergency use the cylinder will therefore last 68 mins. However if used at 6L/min it will last nearly 2 hours. In the US we use PSIG (gauge level). at full a tank is about 2200 PSI on any given tank size, and the E cylinder has a tank factor of 0.28. So you take take the PSI and multiple it by by the tank factor and divide that number by the flow rate. So at full, 2200 x 0.28 = 616 and dvided that by the flow rate. The final number is the total number of minutes at the given flow rate. So at 2 liters per minute (2 lpm) a completely full E cylinder will last 308 minutes or 5.13 hours (divide total minutes by 60 to get hours). 140 minutes at 4lpm, and so on. You deffinetly want to call your oxygen supplier well before the guage gets to the red. With most guages the very start of the red line (the end farthest from empty) is around 500 PSI. A good rule of thumb is to round down to the nearest whole hour when figuring duration. So when I've needed to I look at 5.16 hours and say 5 hours. If you do run out or are into the red already, call 911 (or your local emergency service), all ambulances carry oxygen and better to have them arrive and use their O2 than to call your oxygen service because ambulance should be able to get their faster. Remember, at the very beginning of red (500 PSIG) a E cylinder will only last 140 divided by flow rate...so 70 minutes at 2lpm, 35 minutes at 4lpm, etc. Dont risk it, when in red, call 911 first, then your oxygen supplies...that is as long as you dont have any other cylinders to use. common tank factors: H Cylinder factor is 3.14 D cylinder factor is 0.16 (typical portable oxygen size) * in the USA, all oxygen tanks, when completely full, are 2200 PSI, if you know the tank factor, you can easily compute the duration. Calculating liquid oxygen is a whole nother ball of wax....
D cylinders are about 4 inches around and 18 inches high including the valve stem. They hold about 340 liters of compressed oxygen and so have about half the capacity of the more common E cylinders.
An average d size tank will last for about 20 min with a non re breather at 15 lpm Duration = ((current pressure -200) x tank factor) / flow rate tank factors are M=1.56 E=0.28 D=0.16
yes it would as long as it kept its size
18mm
Because they're not used in an 1:1 ratio. One cylinder is made bigger so that they'll still end up empty at about the same time.
most last a long time but the time depends on the size of the candles
An average d size tank will last for about 20 min with a non re breather at 15 lpm Duration = ((current pressure -200) x tank factor) / flow rate tank factors are M=1.56 E=0.28 D=0.16
Depends on size of bag.
it depends what the size is. and the type of shoe a trainer your own size would last up to 6 onths