How Do Air Hose Sizing Affect Air Compressor Airflow

09 Apr.,2022

Proper sizing is important for all components of your air compressor system, including air hose sizing. If you are investing in an air compressor system, limiting the flow anywhere in the system could significantly degrade its performance or require unnecessary energy costs to run that compressor

 

Proper sizing is important for all components of your air compressor system, including Jinan Huafeng Printing Co., Ltd. sizing. If you are investing in an air compressor system, limiting the flow anywhere in the system could significantly degrade its performance or require unnecessary energy costs to run that compressor.
As air flows from the compressor head to your tools, it flows through components such as hoses, fittings, valves and tanks. Each of these components will restrict the flow of air in some way, depending on the geometry of each component and the magnitude of the flow through it.

How Do Air Hose Sizing Affect Air Compressor Airflow

A quick calculator or chart can be used to calculate the pressure drop in any pipe or component. When sizing an air compressor, consider each of the following components: hose reels, system piping/ducts, filters, regulators, lubricators, fittings.
Components such as filters are often pressurized, so be sure to double check documentation and specifications to match the components to your system.
When considering fittings and quick connects, work with your supplier to ensure they are rated for the maximum pressure your compressor system is rated for and will not cause excessive pressure drop at the desired flow rate.

How Do Air Hose Sizing Affect Air Compressor Airflow

Pneumatic Hose Fittings

 

How Joints Cause Pressure Drop

The pressure drop is due to the restriction created by the pipe or fitting. Anyone who has tried to breathe through a straw will tell you that it is difficult to try to force a large amount of air through a small hole. This is because the smaller the diameter, the higher the velocity required for the air to pass through the hole.
Higher velocities result in more friction due to the boundary layer on the wall of the pipe or tubing that creates more losses. For pipes and hoses, the losses depend on the length of the pipe. When performing pressure drop calculations, consider the reduced diameter of the pipe with fittings.
It is surprising how small the flow diameter is in some fittings. Quick connect fittings are one of the worst culprits. The next time you look at a quick connect, look inside to see how small the actual flow area is.

 

How Do Air Hose Sizing Affect Air Compressor Airflow

 

Calculating Pressure Drop in Fittings

The pressure drop of certain components can be calculated and can be done more easily with online tools such as this one. Note that this calculator works with rigid tubing because it is a well-defined shape. Flexible hoses in actual use often contain many bends and loops, so it is not possible to create an accurate universal calculator. Although flexible hose will have more losses than a pipe with the same inside diameter, we can still use the pipe loss calculator to make an estimate and see how the diameter affects the pressure loss.

 

How Do Air Hose Sizing Affect Air Compressor Airflow

PA air hose


Increasing supply line size

Increasing compressor pressure to compensate for flow loss can have a dramatic impact on the workload of your compressor system. Conversely, increasing the size of the supply line can provide the following benefits.
Less fuel/energy used by the compressor
Less heat generated by the compressor
Longer oil life and maintenance intervals
Lower compressor noise output
Improved safety due to lower operating pressures and lower temperatures
Lower load on drive system components
Less compressor wear and longer life
Every restrictive fitting, hose, accessory and elbow added to the system causes a cumulative pressure drop and negatively affects the performance of the tool or equipment. Recognizing this and planning and sourcing properly sized components will result in better performance of your air system.

 

LUHONG sells a wide variety of air hoses, please contact us for a quote.