Helium Pressure: Compressing & Lifting Capacity

In summary, compressing helium to match the density of air requires approximately 107 psia and 2 stages of compression. However, it is more difficult to seal than air and requires higher temperatures. The density of helium at 14.7 psia and 70 F is significantly lower than that of air.
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Is it easy to compress helium,not into a tank,just enough to make it heavier than air?and how much weight can it lift per cubic meter under normal atmospheric pressures? please can someone help!
 
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  • #2
Depends on what you mean by "easy". For any given increase in pressure, the temperature of helium will be higher than air. It's also more difficult to seal than air. However, the same techniques used to compress air can be used to compress helium.

To get the density of helium equal to that of air, it must be compressed to roughly 107 psia. Normally, this requires 2 stages of compression.

Density of helium at 14.7 psia and 70 F is .0103 lbm/ft3, compared to air which is .0749 lbm/ft3.
 
  • #3


I can provide some information on helium pressure and its compressibility and lifting capacity. Helium is a gas that is known for its low density and high compressibility. It is relatively easy to compress helium, especially compared to other gases, due to its low atomic mass and lack of intermolecular forces. However, compressing helium to the point where it becomes heavier than air is not a simple task. It would require a significant amount of pressure to compress helium enough to overcome its natural buoyancy.

In terms of lifting capacity, helium is commonly used in balloons and airships due to its low density and ability to lift heavy objects. The lifting capacity of helium per cubic meter under normal atmospheric pressures (1 atm) is approximately 1 gram. This means that one cubic meter of helium can lift 1 gram of weight. However, this lifting capacity can vary depending on the temperature and pressure of the surrounding environment.

In conclusion, while it is possible to compress helium, it would require a significant amount of pressure to make it heavier than air. Additionally, the lifting capacity of helium per cubic meter is relatively low compared to other gases, but it is still commonly used for lifting objects due to its low density. I hope this information helps.
 

FAQ: Helium Pressure: Compressing & Lifting Capacity

1. What is helium pressure?

Helium pressure refers to the amount of force exerted by a certain amount of helium gas in a given space. It is typically measured in units of pressure, such as psi or bar.

2. How is helium pressure related to compressing capacity?

As helium gas is compressed into a smaller space, the pressure increases. This is because the same amount of gas is now occupying a smaller volume, resulting in a higher concentration of gas particles and thus a higher pressure.

3. What is the lifting capacity of helium?

The lifting capacity of helium refers to the amount of weight that can be lifted by a certain volume of helium gas. This is due to the fact that helium is less dense than air and thus provides buoyancy, allowing objects to float or be lifted.

4. How does compressing helium affect its lifting capacity?

Compressing helium increases its pressure and decreases its volume, which in turn increases its lifting capacity. This is because a smaller volume of compressed helium gas can provide the same amount of buoyancy as a larger volume of uncompressed helium gas.

5. Is there a limit to the compressing capacity of helium?

Yes, there is a limit to the compressing capacity of helium. The gas laws dictate that as the pressure of a gas increases, its volume decreases. However, there is a point at which the gas molecules are so tightly packed together that they can no longer be compressed any further.

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