Does pressure in a compressed air system increase....

In summary, the conversation discusses the effects of changing the size of an air line in a compressed air system. It is mentioned that there will be a pressure drop at the end of the line, and this can be seen through an experiment with two pressure gauges. The pressure reduction is greater when the orifice is made larger. It is also noted that reducing the size of the air line will increase air velocity and pressure drop. This information can be further researched through topics such as "compressed air pipe sizing" and "compressed air distribution".
  • #1
rtservices
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does pressure in a compressed air system increase when going from a 2" air line to a 1" air line.
 
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  • #2
No.
Consider this experiment. Suppose a pressure gauge labeled 'PSI1' were situated in a 6"pipe directly at the output of a 1485 CFM compressor operating at 100 PSI. A tee is added, and a 1/4" hose barb is coupled to 100 feet of 1/4" diameter air hose with another pressure gauge (labeled 'PSI2') and a graduated needle valve at the far end.

In your experience, with the valve closed, would the pressure at the far end of the hose be higher?

Under no-flow conditions both pressures should be identical.

Now, incrementally open the needle valve while tracking both PSI1 and PSI2 gauges, and plot the resulting pressures against needle valve position (orifice setting). You'll note while pressure at PSI1 drops, that the pressure reduction at PSI2 is far greater as the orifice is progressively made larger.

Except for the no-flow condition, pressure at the far end of the run will always be lower than at the source.
Reducing 2" to 1" will increase air velocity and pressure drop.

Look up "compressed air pipe sizing" and "compressed air distribution".
 

1. Does pressure in a compressed air system increase when the temperature increases?

Yes, pressure in a compressed air system increases when the temperature increases. This is known as the Ideal Gas Law, which states that pressure and temperature are directly proportional to each other. As the temperature increases, the molecules in the air move faster and collide more frequently with the walls of the container, resulting in an increase in pressure.

2. Does the volume of a compressed air system affect the pressure?

Yes, the volume of a compressed air system does affect the pressure. According to Boyle's Law, the pressure and volume of a gas are inversely proportional to each other. This means that as the volume of the compressed air system decreases, the pressure increases and vice versa.

3. Can the pressure in a compressed air system be too high?

Yes, the pressure in a compressed air system can be too high. If the pressure exceeds the maximum limit of the system, it can cause damage to the equipment or even lead to explosions. It is important to monitor and regulate the pressure in a compressed air system to ensure it stays within a safe range.

4. How does the type of gas affect the pressure in a compressed air system?

The type of gas used in a compressed air system can affect the pressure. Different gases have different molecular weights and properties, which can impact how they behave under pressure. For example, a heavier gas will require more pressure to compress compared to a lighter gas.

5. What factors can cause a decrease in pressure in a compressed air system?

There are several factors that can cause a decrease in pressure in a compressed air system. These include leaks in the system, changes in temperature, and changes in the volume of the system. It is important to regularly check and maintain the system to prevent any decrease in pressure that can affect its performance.

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