The Pyramid refrigeration air dryer is constructed with stainless steel air-to-air and air-to-Freon heat exchangers and incorporates a high efficiency water separator and a coalescing filter in the coldest section of the dryer.
Principle of operation of the Pyramid refrigeration air dryer
Saturated compressed air is passed through heat exchangers, which reduce the compressed air temperature to 3°C using cold Freon. At this temperature the water and oil vapours condense from a vapour into a liquid. This oily liquid can then be drained from the dryer to a waste handling plant.
The departure from other designs is the use of the high efficiency coalescing filter within the cold core of the dryer. Coalescing oils and liquids at a temperature of 3°C, where the concentration of liquids is the highest, significantly improves the oil removing capacity of this dryer to a level of 99,8%.
A normal air dryer is fitted with external coalescing filters that are designed to remove oils and solids at a design temperature of 20°C. In reality these filters are often operating at temperatures up to 45°C. At these temperatures the filter elements do not achieve the designed performance and oil removal characteristics fall below design parameters. The hydrocarbon removal efficiency rate at 38°C is typically around 76%.
In the refrigeration air dryer contaminants are trapped and removed from the air stream by intelligent, level controlled capacitance type moisture traps. These units only exhaust liquids, and prevent expensive compressed air wastage.
The result is an air quality that is vastly superior to that of a combination of a filter and refrigerated dryer in series. With optional activated carbon filters fitted after the air dryer the Pyramid air dryer is capable of providing almost oil-free air from a lubricated source compressor. This gives operators a compressor purchase and secondary maintenance costs that are greatly reduced.
Artic Driers International is the sole southern African distributor of products manufactured by SPX Dehydration in Busan, South Korea.
Acoustic imaging detector for gas leaks and partial discharge Artic Driers International
Hydraulic systems & components
The new SUTO iTEC S532 acoustic imaging detector provides an easy and effective way to locate pressurised air and gas leaks and partial discharge (PD) in industrial high-voltage environments.
Read more...Seamless compressed air supply
Pneumatic systems & components
The efficient performance of compressed air systems is the foundation for seamless production processes and sustainable business. The adoption of a comprehensive service plan delivered by an OEM like Atlas Copco is key to overall compressor performance, efficiency, reliability, and long lifecycle.
Read more...Selection of two-port valves: an open and shut case SMC Corporation South Africa
Pneumatic systems & components
Little consideration is generally given to two-port valves because they are often perceived as simple devices that only open and close to control downstream fluid supply. Although this is mechanically true, choosing the optimal two-port valve for your application can make a big difference, saving space, weight and energy consumption.
Read more...Integrated Air Solutions expands its compressor rental service
Pneumatic systems & components
The significant growth of the industrial air compressor rental division launched by Integrated Air Solutions under a year ago, has prompted the need for more resources and equipment. Headed up by Rudolf ...
Read more...Thor’s hammer of pneumatic knockers Neu Matics SA
Pneumatic systems & components
Neu Matics acts as sole distributor for a range of internationally recognised brands, and one of these is the pneumatic knocker from singold.
Read more...Compressed air drying and monitoring with low dewpoints Artic Driers International
Pneumatic systems & components
Artic Driers manufacturers the Sahara low dewpoint, heatless pressure swing air dryers with SANS 347 pressure code. These desiccant-rich pressure dryers comfortably obtain pressure dewpoints of -40°C.
Read more...Tyre-actuated globe valve Parker Hannifin - Sales Company South Africa
Pneumatic systems & components
Parker Hannifin has launched a tyre-actuated pneumatic valve in its Bestobell cryogenic globe valve range. The valve can be operated remotely with a single switch command, providing much greater speed and convenience than a manually operated type.
Read more...Oil-free beer and wine processing
Pneumatic systems & components Hydraulic systems & components
The food and beverage industry depends on superior quality, 100% oil-free compressed air to eliminate the presence of unwanted oil vapour throughout the production line.
Read more...Ten considerations for optimum use of vacuum technology
Pneumatic systems & components
Vacuum technology plays a huge role in the packaging of foodstuffs and other products. Here are ten considerations to help you use vacuum technology as effectively and efficiently as possible, so that you can optimise processes and cut operating costs.
Read more...Case History 191: The weakest link
Pneumatic systems & components
Which is the weakest link in a control loop? The answer, without any doubt is that, in most cases, the final control element is the weakest link.
printer friendly version