A useful rule of thumb is that each 1 bar of extra pressure adds roughly 7% to energy use. Applying this rule reveals fast savings in most plants.
Why Pressure Costs Energy
- Compressing to higher pressure needs more power.
- Higher pressure also increases leakage.
- The cost is continuous, even when demand is low.
Applying the Rule
- Measure the pressure at the point of use.
- Reduce the system setpoint to the minimum needed.
- Account for pressure drop in the calculation.
Making Savings Stick
- Test lower setpoints during production.
- Fix restrictions that demand high pressure.
- Monitor specific energy before and after.
Is the 7% rule exact?
It is an approximation that varies by machine, but it is a reliable guide for finding savings.
Talk to an Engineer
Contact Panrui with your flow, pressure and air quality requirements to get a recommendation and factory quote for your project.