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HHS, HHL and HHE Series Heatless Desiccant Compressed Air Dryers For pressure dew points to –100˚F (–73°C)

HHS, HHL and HHE Series Heatless Desiccant Compressed Air Dryers For pressure dew points to –100˚F (–73°C). HHS, HHL & HHE Series. Meeting global demand for:. Energy Savings Quality & Reliability. HHS, HHL & HHE Series. Meeting and Exceeding ISO 8573.1 Air Quality Classes.

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HHS, HHL and HHE Series Heatless Desiccant Compressed Air Dryers For pressure dew points to –100˚F (–73°C)

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  1. HHS, HHL and HHE Series Heatless Desiccant Compressed Air Dryers For pressure dew points to –100˚F (–73°C)

  2. HHS, HHL & HHE Series Meeting global demand for: Energy Savings Quality & Reliability

  3. HHS, HHL & HHE Series Meeting and Exceeding ISO 8573.1 Air Quality Classes

  4. HHS, HHL & HHE Series • Two Advanced Design Platforms • 40-450 scfm Models with space savings features: • Integrated filtration within dryer footprint • Reduced height due to outlet / purge piping in back of vessels instead of on top

  5. HHS, HHL & HHE Series • Two Advanced Design Platforms 590-5400 scfm Models feature rugged reliability: • Time tested design • No “midnight surprises” common in someheated desiccant dryer designs

  6. HHS, HHL & HHE Series Basic Operation 1. Compressed air passes through a vessel filled with desiccant 2. Water vapor is attached to the surface of the desiccant by the process called adsorption 3. Dry air exits the dryer

  7. HHS, HHL & HHE Series Desiccant Absorption Process • Water vapor molecules come in contact with surface and are adsorbed on to it. 2 1 Low H2O Magnification of a section showing pores DESICCANT BEAD AIR FLOW High H2O Heat is released as water is adsorbed-1250 BTU’s per pound of water. AIR FLOW Water vapor moves from areas of higher concentration to areas of lower concentration. 4 3 Low H2O AIR FLOW The desiccant adsorbs water until the concentration of water vapor inside the pores equals that of the compressed air stream (saturated). Then, no more water vapor can be adsorbed until the desiccant is replaced or regenerated. AIR FLOW Water vapor builds up on surfaces, eventually becoming dense enough to change phase into a liquid. AIR FLOW 5 6 Vapor

  8. HHS, HHL & HHE Series Heatless Desiccant Dryers Provide a continuous supply of compressed air at low dew points Operation: One tower is on-line drying the air while the other tower is off-line being regeneratedTowers alternate so that the air stream is always exposed to dry desiccant

  9. HHS, HHL & HHE Series Method of Regeneration Pressure-Swing (Heatless) Regeneration Dried compressed air is expanded to near atmospheric pressure This low pressure, extremely dry air pulls water from the desiccant and carries it out of the dryer

  10. HHS, HHL & HHE Series • Basic Operation 1. Fluctuating Demands • Large variations due to production scheduling or shift workloads 2. Reduced Demands • Peak demand reductions from air audit strategies being implemented 3. Peak Demands • Consistently operating at-or-near full capacity

  11. HHS, HHL & HHE Series • 3 Application Specific Designs HHS Series Automatic Sensatherm® Energy Savings • Purge use matches plant air demands HHL Series Selectable Purge Economizer Savings • Adapt purge requirements to peak demands HHE Series Pure Performance • Traditional timed drying/regeneration cycles

  12. HHS, HHL & HHE Series • HHS, HHL & HHE Series • Standard Instrumentation • Left and right tower pressure gauges • Purge pressure gauge • Moisture indicator • Throttling valve for accurate purge pressure adjustment • Pilot air filter and regulator

  13. HHS, HHL & HHE Series HHS Series The Energy-saving HHS Series features: HHS Controller Sensatherm®energy savings Models HHS40 through HHS5400 Demand cycle dew point performance of: Dew Point ISO Class -40°F (-40°C) 2-4°F (-20°C) 3+38°F (+3°C) 4

  14. HHS, HHL & HHE Series Basic Operation ISO Class Dew Point Cycle Mode 1 -100°F (-73°C) Fixed 4 min. 2 -40°F (-40°C) Demand or Fixed 10 min. 3 -4°F (-20°C) Demand or Fixed 16 min. 4 +38°F (+3°C) Demand or Fixed 24 min.

  15. HHS, HHL & HHE Series • HHS Series Controller Saves • Energy with Sensatherm™ Patented Sensatherm purge saving system usestemperature sensors to match purge air requirements on the dryer. Average purge rates as low as 7% under 50% load conditions Benefits: Uses highly reliable temperature sensors Regeneration occurs before the heat ofadsorption is lost No sensor calibration required Standard on all HHS Series Models

  16. HHS, HHL & HHE Series • HHS Series Controller Vacuum fluorescent text display for: • Energy savings (i.e…18% savings) • Operating mode • Service reminders

  17. HHS, HHL & HHE Series Two Advanced Design Platforms 1. Tower 2 goes off-line; sensor B1 takes reading 2. Tower 2 regenerates; sensor B1 takes another reading 3.Temperature difference is indirect measurement of load on the dryer 4. Microprocessor determines temperature rise that will occur when Tower 2 goes on-line and becomes fully loaded 5. Tower 2 goes on-line; sensor B2 monitors temperature 6. When the calculated temperature rise occurs, Tower 2 goes off-line for regeneration

  18. Filter Maintenance LED Right tower pressure switch LED On = switch closed Off = switch open Left tower drying LED Left purge valve LED On = valve open Off = valve closed Right tower Drying LED Left tower Regenerating LED Right purge valve LED On = valve open Off = valve closed Right tower Regenerating LED Filter maintenance LED “Enter” switch “Select” switch Maintenance reminder LED Communications icon Reset switch (for maintenance reminder & alarm) Vacuum fluorescent text display 2 line x 16 character Alarm LED Power on LED On/Off switch HHS, HHL & HHE Series HHS Series Controller

  19. HHS, HHL & HHE Series Two Advanced Design Platforms The Energy-saving HHL Series features: HHL Controller Purge Economizer Energy Savings Models HHL40 through HHL5400 Fixed cycle dew point performance of: Dew Point ISO Class -100°F (-73°C) 1-40°F (-40°C) 2 -4°F (-20°C) 3 +38°F (+3°C) 4

  20. HHS, HHL & HHE Series HHL Series Controller Operating Modes: ISO Fixed Class Dew Point Cycle Mode 1 -100°F (-73°C) 4 minutes 2 -40°F (-40°C) 10 minutes 3 -4°F (-20°C) 16 minutes 4 +38°F (+3°C) 20 minutes

  21. HHS, HHL & HHE Series • HHL Series Controller Purge Economizer features: • Choice of eight settings with a selector switch • Settings from 0% to 70% savings in 10% increments • Reduce the regeneration (purge) cycle to save energy under reduced air load conditions

  22. Filter Maintenance LED Left tower pressure switch LED On = Switch closed Off = Switch open Right tower pressure switch LED On = switch closed Off = switch open Left tower drying LED Left purge valve LED On = valve open Off = valve closed Right tower Drying LED Left tower Regenerating LED Right purge valve LED On = valve open Off = valve closed Right tower Regenerating LED Filter maintenance LED Operating cycling LED’s ISO class 1-4 and manual cycle (Test Mode) Energy savings Icon ISO class selector switch Energy savings selector switch Maintenance reminder LED Communications icon Reset switch (for maintenance reminder & alarm) Alarm LED Power on LED On/Off switch HHS, HHL & HHE Series HHL Series Controller Energy (purge) savings LED’s

  23. Service Item Normal Severe Filter pressure drop Filter drains Desiccant Check moisture indicator Inspect mufflers Valves Ensure proper operation • RS232 Communications Port 4,000 hours 2,000 hours 8,000 hours 4,000 hours 4,000 hours 2,000 hours HHS, HHL & HHE Series HHL & HHS Series Controllers Customer choice of Normal or Severe Service intervals:

  24. HHS, HHL & HHE Series HHE Series The traditional HHE Series features: HHE Controller Pure Performance Design Models HHE40 through HHE5400 Fixed cycle dew point performance of: Dew Point ISO Class -40°F (-40°C) 2

  25. HHS, HHL & HHE Series HHE Series Pure Performance Control features: • HHE Controller • Power On LED • Left Tower Drying LED • Right Tower Drying LED • Solid State Timer

  26. HHS, HHL & HHE Series • HHS, HHL & HHE Series Flows from 40 through 3,000 scfm Operation • Compressed air enters the bottom of Tower 4B through AccuShiftTM switching valve 3 • The air flows upward through the desiccant bed where it is dried • The dried air exits the dryer through AccuShiftTMvalve 5 • A portion of the dried air flows through a purge adjusting valve 6 and orifice 7 and is reduced to near atmospheric pressure • This (purge) air flows through Tower 4A regenerating the desiccant and exits to the • atmosphere through purge / repressurization valve 9A and muffler 10A

  27. HHS, HHL & HHE Series • HHS, HHL & HHE Series Flows from 40 through 3,000 scfm AccuShiftTM Switching Valves • Inlet and Outlet Switching Functions • 5 Year Warranty * • Fewer Parts • Non Lubricated • Maintenance Free • Corrosion Resistant Nylon • Tested to More than 500,000 Cycles * Parts and labor 1 year, parts only years 2 through 5.

  28. HHS, HHL & HHE Series Inlet Purge / Repressurization 40 - 590 scfm Nylon seats Repair kits easy to install

  29. HHS, HHL & HHE Series • Purge Exhaust / Repressurization 750 – 3,000 scfm Space saving filtration packages Recommended HF Series Prefilters • Grade 9 - 3 micron bulk liquid filter / separator • Grade 5 - 0.008 ppm (0,01 mg/m3) oil removal coalescer Recommended HF Series Prefilters for -100°F (-73°C) applications • Grade 7 - 1 micron particulates and liquids • Grade 3 - 0.0008 ppm (0,001 mg/m3) oil removal coalescer Recommended After Filters • Grade 6 - 1 micron dry particulates • Grade 1 - oil vapor removal

  30. HHS, HHL & HHE Series • HHS, HHL & HHE Models 4100 & 5400 Operation • Compressed air enters the bottom of Tower 4B through inlet switching valve 3B • The air flows upward through the desiccantbed where it is dried • The dried air exits the dryer through check valve 5B • A portion of the dried air flows through a purge adjusting valve 6 and orifice 7 and is reduced to near atmospheric pressure • This (purge) air flows through Tower 4A regenerating the desiccant and exits to the atmosphere through purge / repressurization valve 9A and muffler 10A

  31. HHS, HHL & HHE Series • HHS, HHL & HHE Models 4100 & 5400 Inlet Purge / Repressurization Valves • Pneumatic actuators isolated from air stream • Inlet valves - N/O double acting rack and pinion uses air power to both open and close valves • Position indicator shows if valve is open or closed • Valves may be operated manually • Purge valves - N/C spring return holds valves closed prior to start-up and upon loss of pressure

  32. HHS, HHL & HHE Series • HHS, HHL & HHE Models 4100 & 5400 Switching, Purge Exhaust / Repressurization Valves • Direct mount pilot solenoid valves with hermetically sealed coils • Resilient elastomeric seats

  33. HHS, HHL & HHE Series • HHS, HHL and HHE Series Filtration Packages: 40 through 5,400 scfm Space saving filtration packages Recommended HF Series Prefilters • Grade 9 - 3 micron bulk liquid filter / separator • Grade 5 - 0.008 ppm (0,01 mg/m3) oil removal coalescer Recommended HF Series Prefilters for -100°F (-73°C) applications • Grade 7 - 1 micron particulates and liquids • Grade 3 - 0.0008 ppm (0,001 mg/m3) oil removal coalescer Recommended After Filters • Grade 6 - 1 micron dry particulates • Grade 1 - oil vapor removal

  34. HHS, HHL & HHE Series HHS, HHL & HHE Series Dryers Ensure Performance Consistent Outlet Dew Points • Large desiccant beds of 0.6 pounds, 0.27 kg of desiccant/scfm/tower • 4.8 second contact time – ensures that saturated air at the inlet is at the specified dew point at the outlet • Large, effective flow diffusers prevent channeling

  35. HHS, HHL & HHE Series HHS, HHL & HHE Series Dryers Ensure Performance Hankison Design Prevents Desiccant Dusting Bed design prevents fluidization - air velocity less than 60 ft/min at 100 psig, 18.3 m/min at 7 bar Slow and complete Repressurization Upflow drying prevents bed contamination Models above 60 scfm include pressure vessels manufactured according to ASME

  36. HHS, HHL & HHE Series HHS, HHL & HHE Series Dryers Ensure Efficiency Low Purge Air Use Saving the heat of adsorption Hankison dryers save 98% of the heat of adsorption Purge air rate 13.7% - the lowest in the industry 100°F 102°F 110°F 115°F 108°F 100°F Heat of Adsorption

  37. HHS, HHL & HHE Series What is the Heat of Absorption? Heat released during adsorption of water vapor Sum of latent heat + heat of wetting Activated alumina releases 1250 Btu’s per lb. of H2O

  38. HHS, HHL & HHE Series How is the Heat of Absorption Saved? Bed has sufficient desiccant volume to retain heat Tower goes off-line before thermal front reaches top of bed

  39. HHS, HHL & HHE Series Why is Saving the Heat of Absorption Important? Maintains temperature of purge air during regeneration Maximizes efficiency Minimizes purge air usage If 10% of the Heat of Adsorption is lost, purge flow must be increased 50%

  40. HHS, HHL & HHE Series HHS, HHL and HHE Series Dryers Feature Ease of Maintenance Separate fill and drain ports Cleanable flow diffusers All control valves are rebuildable in the field

  41. HHS, HHL & HHE Series HHS, HHL and HHE Series Safe Pressure relief valves Heavy duty mufflers

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