Energy saving for compressed air production is of great importance all over the world due to its energy cost and indispensable utility in industrial sector. In recent years, oil-injected two-stage screw compressors, especially driven by dual motors, are becoming a promising alternative other compression equipment their extraordinary efficiency high reliability wide range applications. However, ...

A problem with pneumatic positioning systems is the low energetic efficiency. This paper presents a structure of a compressed air saving for pneumatic positioning systems with capacity to move high loads. This structure use the loading to save compressed air and thus to increase the energetic efficiency of these systems. This configuration adds a fast switching on/off valve in a feedback betwee...

Discharge air/gas from compressors is often not of the right quality for certain uses unless it is suitably treated. The various contaminants present in compressed air/gases include atmospheric pollution, compressor wear particles, bulk lubricating oil and aerosols, watervapour and condensed water, oil/ water emulsion, rust and carbon. Suitable treatment of the air/gases involves the removal of...

Compressed-air tools are of interest by reason of their vibratory action which affects the peripheral circulation of the fingers. Raynaud's syndrome in riveters, pneumatic chisellers and drillers is well known. The harmful effect is almost certainly due to vibration, although cooling of the hands may occur with some pneumatic tools and may be a contributory factor.* Apart from using compressed ...

The air separation plays an extremely important role in the development of metallurgical industry. And the air compressor which provides not only the required pressure air for the cooling equipment and refrigeration plant but also the raw material required for the separation plant is a key device in the air separation plant. Utilization of the air compressor is extremely extensive in many signi...

Underwater compressed air energy storage (UWCAES) is founded on mature concepts, many of them sourced from underground compressed air energy storage technology. A fundamental difference between the two systems is the way in which air is stored. UWCAES utilizes distensible boundary, submerged air accumulators as opposed to rigid walled caverns. This paper presents an analysis of the primary desi...