Compressed Air n' Pressure Question

IraqIn summary, the conversation discusses finding an internet site that discusses the properties of compressed air in a tank and the behavior of air when it is released from the tank. The conversation also mentions an equation for calculating the rate at which air leaves through a valve and provides a website as a resource for performing these calculations.
  • #1
dingpud
199
1
Does anyone know of an internet site that discusses the properties of compressed air in a tank, and how the air behaves when it is released from the tank. Also, is there an equation which describes the rate at which air leaves through a valve of a tank?

Thanks much
 
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  • #2
Here is a calculation to determine the Cv for gas passing a control valve:

CvValve = (LbsGasHr / (3 * SQR(PsigInAdj * PsigOutAbsol))

PsigInAdj use 80% for 15 psig or less
PsigInAdj use 43% for over 15 psig

If you know the Cv of the valve but not the flow, you can rework this to solve for the lbs of gas per hr.

Here is a site that can give you just about all you need to perform the calculations:


http://www.engineeringtoolbox.com/22.html
 
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  • #3
Ahhh Much clearer now.

This clears up a lot.

Thanks.

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FAQ: Compressed Air n' Pressure Question

1. What is compressed air and how does it work?

Compressed air is a form of energy that is created by compressing normal air molecules into a smaller space. This process increases the air pressure, which in turn, increases the potential energy of the air. When released, the compressed air expands and converts its potential energy into kinetic energy, which can then be used to power various tools and equipment.

2. How is compressed air used in various industries?

Compressed air is used in a wide range of industries, including manufacturing, automotive, construction, and healthcare. It is commonly used to power pneumatic tools, such as drills and nail guns, as well as for cleaning and drying processes. Compressed air is also used in medical equipment, such as ventilators and dental tools.

3. What are the benefits of using compressed air?

There are several benefits to using compressed air. It is a clean and versatile source of energy that can be easily transported through pipelines. It is also non-toxic and non-flammable, making it a safe option for many applications. Additionally, compressed air can be used in areas where electricity is not readily available or safe to use.

4. How is compressed air stored and distributed?

Compressed air is typically stored in tanks or cylinders at high pressure. These tanks can vary in size and are often made of metal or composite materials. The air is then distributed through a network of pipes and hoses to the desired location. Pressure regulators are used to control the amount of air being released and to ensure safe operation.

5. What are the potential hazards of working with compressed air?

While compressed air is generally considered safe, there are some potential hazards to be aware of. High-pressure air can cause injuries if not handled properly, and it can also be dangerous if it comes into contact with certain materials, such as oil or grease. It is important to follow safety precautions and receive proper training when working with compressed air to prevent accidents and injuries.

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