aerospace climate control electromechanical filtration fluid & gas handling hydraulics pneumatics process control sealing & shielding PNEUDRI Compressed Air Desiccant Dryers ENGINEERING YOUR SUCCESS.

Moisture is one of the major contaminants in compressed air systems. It occurs because water vapour present in the atmosphere is drawn into the compressor, where its' concentration can rise dramatically as temperature increases. Of the ten contaminants commonly found in a compressed air system, water vapour, liquid water and aerosols account for the majority of problems experienced by the compressed air user. Unseen water vapour condenses into liquid water Large volumes of atmospheric air enter the compressed air system through compressed, its temperature increases significantly, causing it to...

PNEUDRI modular compressed air dryers - a dedicated solution for every application By combining the proven benefits of desiccant drying with modern design, Parker domnick hunter has produced an extremely compact and reliable system to totally dry and clean compressed air. Flowrates from PNEUDRI MIDIplus Flowrates from Flowrates from Flowrates from The Parker domnick hunter PNEUDRI ranges of heatless and heat regenerative dryers have proven to be the ideal solution for many thousands of compressed air users worldwide in a wide Compressed air purification equipment must deliver uncompromising performance...

PNEUDRI comprises of high tensile extruded aluminium columns each containing twin chambers filled with desiccant material which dries the compressed air as it passes through. One chamber is operational (drying), while the opposite chamber is regenerating using either the Pressure Swing Adsorption (PSA) (heatless) or Thermal Swing Adsorption (TSA) (heat regenerative) method of drying. A small volume of the dried compressed air is used to regenerate the saturated desiccant bed by expanding air from line pressure to atmospheric pressure, removing the water vapour adsorbed by the desiccant material,...

PNEUDRI - The world's most advanced modular drying system With the proven benefit of advanced aluminium forming technology, Parker domnick hunter has developed a twin tower desiccant dryer that is typically 60% of the size and weight of conventional designs. These advanced desiccant dryers include ranges of heatless and heat-regenerative PNEUDRI dryers which provide one of the most simple and cost effective compressed air drying solutions. Engineers at Parker domnick hunter have developed PNEUDRI using innovative aluminium forming technology, resulting in units that are typically 60% of the size...

PNEUDRI - four key features OIL-X EVOLUTION filtration Adsorption dryers are designed for the removal of water vapour and not liquid water, water aerosols, oil, particulates or micro-organisms. Only by using Parker domnick hunter OIL-X EVOLUTION pre and after filtration can the removal of these contaminants be assured and air quality in accordance with all editions of IS08573-1 be guaranteed. Modular aluminium design Aluminium extrusions are used throughout for drying chambers and distribution manifolds. This design allows the desiccant material to be retained within the drying chambers.'Snowstorm'...

What air quality do I need? The compressed air PDP should not only be selected to prevent condensation and freezing in the piping, consideration must also be given to the requirements of the application. Typically, refrigeration dryers are employed for general purpose plant air. However, a significant amount of water vapour still remains in the compressed air, much more than is tolerable for most applications (air after an adsorption dryer with -40°C Pressure Dew Point (PDP) is around 60 times dryer than air after a refrigeration dryer with a +3°C PDP). Many critical applications require a PDP...

Selecting the right dryer for your compressed air system To achieve the degree of air quality specified by ISO8573-1:2010, a careful approach to system design, commissioning and operation must be adopted. Parker domnick hunter recommends that compressed air is treated: • Prior to entry into the distribution system • At critical usage points and applications This ensures that contamination already in the distribution system is removed. Purification equipment should be installed where the air is at the lowest possible temperature (i.e. downstream of after-coolers and air receivers). Point-of-use...

What size PNEUDRI do I require? Dryer Selection To correctly select a dryer model, the flow rate of the dryer must be adjusted for the minimum operating pressure and maximum operational temperature of the system. If the dewpoint required is different to the standard dewpoint of the dryer then the flow rate must also be adjusted for the required outlet dewpoint. Selection Example Selecting a dryer for a compressor producing at full load 1500 m3/hr at 8.3 bar g with 38°C air inlet temperature and a pressure PNEUDRI MiDAS PNEUDRI MIDIplus THESE MODELS CAN BE MULTI-BANKED Select the correction factor...

Product Selection Stated flows are for operation at 7 bar g (100 psi g) with reference to 20°C, 1 bar a, 0% relative water vapour pressure. For flows at other pressures, apply the correction factors shown. Dryer Performance Technical Data Electrical Supply Electrical Supply Noise Level Service Interval For fully pneumatic applications, a PNEUDRI MINI range is available. Please contact Parker domnick hunter for further information.

Correction Factors Temperature Correction Factor CFT Maximum Inlet Pressure Correction Factor CFP Recommended Filtration *MiDAS dryers include integral high efficiency pre and general purpose dust filters. \^\ = B (BSPT) or N (NPT)

PNEUDRI MIDIplus Product Selection Stated flows are for operation at 7 bar g (100 psi g) with reference to 20°C, 1 bar a, 0% relative water vapour pressure. For flows at other pressures, apply the correction factors shown. Dryer Performance Technical Data FULLY PNEUMATIC BSPP or NPT Controller Options *ATEX compliant option available. For hazardous environments, a fully pneumatic ATEX compliant version of PNEUDRI is available.