Question 1

How much energy can a PM VFD screw air compressor save?

Accepted Answer

On sites with fluctuating air demand, permanent magnet variable frequency compressors typically save 20% to 40% of electricity compared with fixed-speed load/unload machines, because motor speed follows actual consumption instead of idling. Savings depend on the demand profile, so we recommend a load profile review before sizing.

Question 2

When should I choose an oil-free screw air compressor?

Accepted Answer

Choose oil-free when compressed air touches the product or process, for example in food and beverage, pharmaceuticals, electronics, textiles and painting. Oil-free dry type and water-lubricated designs deliver Class 0 air per ISO 8573-1 and remove the risk of oil carry-over contamination.

Question 3

What information is needed to size an industrial air compressor?

Accepted Answer

Provide required free air delivery in m3/min or CFM, working pressure in bar or MPa, daily running hours and demand variation, required air quality class, supply voltage and frequency, cooling preference, ambient temperature and site altitude.

Question 4

Does Honest Compressor offer OEM and ODM customization?

Accepted Answer

Yes. We supply OEM and ODM air compressors with custom voltage such as 380V, 400V or 415V, controller language, enclosure color, branding and integrated configurations combining compressor, air tank, dryer and filters.

Question 5

What is the benefit of a two-stage screw air compressor?

Accepted Answer

Two-stage compression splits the pressure ratio between two rotor sets with inter-stage cooling. This lowers compression temperature and internal leakage, giving higher specific efficiency than single-stage units, especially for large flows and continuous duty.

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