System Includes:

• GMD PNU™ Cooler
• Blower for Fluidizing
• Plenum Pressure Damper
• Water Cooling Unit or Water Chiller
• Water By-Pass Valve
• Water Pump
• Controls

Options:

• Surge Bin
• PLC Controls
• Feed System
• Graphics Controls Package
• GMD PNU™ Scrubber

Features:

• Absence of Moving Parts
  
• Continuous Processing
  
• Air Classification, i.e.
  
•   Controlled Fines and Dust Removal
  
• High Cooling Efficiency
  
• Low Energy Consumption
  
• Unattended Operation
  
• Total System Concept

"Guaranteed":

• Rated Capacity
• Cooling Efficiency
• Sand Screen Distribution

GMD's PNU™ COOLER is a conventional fluid ned design for fluidizing air distribution, complete with finned water cooling tube banks and baffle plates for directing the sand across the tube banks. The bed of sand behaves as a fluid having a density greater than water. Conditions within the bed result in rapid and intimate mixing, which in turn produces rapid heat transfer from the sand to the fluidizing air which in turn carries off the heat in the form of exhaust air. The finned water cooling tube banks provide indirect cooling at a higher total efficiency when added to the direct cooling provided by the fluidizing air. The water is externally cooled by a conventional evaporative cooling tower after being pumped through the coils. Above the bed of sand is a free board space which, is kept at a slight negative pressure via the dust collector connection. This draws off the air introduced as fluidizing air in addition to classification as unwanted sand fines are removed via the exhaust system.