Technical Oil-free compressed air is defined by the use of an Oil-lubricated air compressor, with an Oil carry over of 2ppm which is than followed by a series of filtration units in order to obtain Class 1 according to ISO8573. Although 2ppm is already a low amount of oil, it...

In regions with high ambient temperatures the choice of a good Oil-free Air-compressor is a challenge. When the temperature outdoor is 50 deg C (122 °F), in the compressor room (if any) the temperature can rise even higher. But even at 40 deg C (104°F), the lifetime of the Oil-free Air...

For Oil-free applications between 100HP and 500 HP at 100-150 PSI, two alternatives for Oil-free air compression are very commonly used, the dry rotaries and the centrifugals. Since the invention of the Oil-free screw compressor, the battle has been between the two technologies. The centrifugals claimed the better efficiency while the Oil-free screw...

For Oil-free compressed air applications between 75kW and 355 kW at 7-10 bar, two alternatives for Oil-free compression are very commonly used, the dry rotaries and the centrifugals. Since the invention of the Oil-free screw compressor, the battle has been between the two technologies. The centrifugals claimed the better efficiency while...

Compressed air in a factory can serve two applications. Either it is for a specific application or either it is for the general purpose throughout the whole factory (7-10 bar network). The specific applications often are using different pressure for which they cannot be connected to the general compressed air network at...

An air-compressor is rated by manufacturers at their nominal flow-power level. In the commercial leaflets, the flow and the nominal electrical power is published. The nominal power of an electrical motor can be different than the real power consumed. The nominal power only refers to the frame size of the electrical motor. The flow is measured according...

In my previous article, I mentioned the upcoming legislation on Air-compressor performances. In the automotive industry, since two years, the Diesel Gate scandal keeps ongoing and despite the focus is on the VW group, it seems that most car manufacturers are trying to escape from it. The unclear or limited specified...

About 10% of the energy used by the industry is consumed by the compressed air. Depending on the size and the application, it can be an Oil-free compressor or an oil-flooded compressor. The larger size of air-compressors are all Oil-free compressors while the differences in energy efficiency between different compression types are so...

In the 19th century, only two types of compression principles were popular, positive displacement, known as piston type, and the centrifugal type. Both were the standard up to the 60ies, but were not reliable enough to keep factories running. The piston compressors were large and required frequently maintenance. The materials and development techniques available in...

Everybody knows how to inflate the tire of his bike ! Whether you have a simple tourist bike, mountain bike or road bike, all tires have to be inflated to have an efficient ride and to minimize the rolling resistance ! The pressure depends on the type of bike you ride...