Air Filter Designs for Electronics Enclosures

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Air Filter Designs for Electronics Enclosures

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Air Filter Designs for Electronics Enclosures

  1. 1. Air Filter Designs for Electronic Enclosures
  2. 2.  This webinar will be available afterwards at www.designworldonline.com & email  Q&A at the end of the presentation  Hashtag for this webinar: #DWwebinar Before We Start
  3. 3. Moderator Presenter Miles Budimir Design World Dan Krupp Universal Air Filter
  4. 4. Today’s presentation… Air Filters in Electronics Cooling Applications • Types of equipment • Contamination & system failure System Design Considerations • Industry standards and compliance • Thermal management / pressure drop Air Filter Specification Process • Enclosure Air Filter Products • 3D CAD Demo Enclosure Flame Safety • Flame Retardant Components • Fire Block Vent Panels Overview
  5. 5. Air Filter Role in Electronics Reliability Filters do more than simply capture dust Thermal Management Shielding Against EMI/RFI Interference Fire Resistance  Use only UL flame rated air filters  Fire audits have confirmed the effectiveness of flame retardant air filters in catastrophic conditions  Overheating is the #1 cause of costly electronics equipment failure and downtime Increase Energy Efficiency  Low resistance / clean filters reduce equipment energy costs by providing optimal, laminar air flow thru-out electronics chassis Environmentally Friendly  Ensure components are 100% compliant with internationally recognized environmental standards  High levels of interference may cause intermittent and unexplained equipment failure, data errors, packet retransmissions and network congestion
  6. 6. Industrial Equipment Applications Production Automation Equipment
  7. 7. Medical Device Applications Sophisticated Medical Electronics
  8. 8. LED/LCD Display Applications Enclosure Thermal Management
  9. 9. Power Gen Applications Green Vehicle & Utility Scale
  10. 10. Solar Power Applications Utility Grid Scale
  11. 11. Wind Power Applications Turbine Environmental Protection
  12. 12. Military Applications Mobile and Aerospace Electronics
  13. 13. Data Center Applications Pre-Filters for CRAC Units  Extends life of CRAC High Efficiency Filters  Cleanable and Reusable  Reduce High Efficiency Filter Change-outs
  14. 14. Electronics Rack Applications Intelligent Rack Cooling
  15. 15. Backup Power Applications UPS / Network Power
  16. 16. Enterprise Network Applications Servers & Storage
  17. 17. Thermal Component Applications Fan Trays and Fan Packs
  18. 18. Contamination Wrecks Equipment
  19. 19. Air Filters Get Dirty
  20. 20. Quadrafoam keeps out dust and moths.
  21. 21. Very clean inside thanks to Quadrafoam
  22. 22. Green Washable Filters Save Money & Improve Efficiency Clean and re-install air filters  Avoid purchasing, inventory, distribution costs  Last several years depending on environment  Sustainability-friendly  Reduce waste
  23. 23. System Design Considerations You need to design a data center chassis…  Enclosure size  Density – electronics and components  Fan ratings – power and noise  Fan or blower locations  Industrial designs And don’t forget the…  Air filter – fit , form, function
  24. 24. Industry Standards and Classifications  NEBS GR-63, GR-78, GR-487-CORE Equipment must be: Easy to install, operate reliably, and efficiently occupy building space. Operation within a set of environmental conditions reduces product installation and maintenance costs.  Advanced TCI/Compact PCI A new series of PICMG specifications, targeted to the requirements for the next generation of carrier-grade communications equipment.  UL/CSA 60950 (formerly UL 1950) EN 60950  UL 94 HF-1 Component plastics flame spec  UL 900 Air filter flame spec  Mil-Spec Applying commercial standards where appropriate
  25. 25. Total Thermal System Management Thermal management...  Intake / Exhaust  Air flow path  Hot / cold aisles Thermal analysis software libraries...  6 Sigma  FloTHERM  IcePak  MacroFlow
  26. 26. Total System Pressure Drop System Components affect airflow  Power supplies  Perforated metal  Card guides  EMI / Faraday cages  Industrial designs / bezels / plenums  Air filters
  27. 27. Fan/Filter System Relationship Fan / blower location…  Push = Pressurization  Pull = Evacuation  Push + Pull
  28. 28. Pressurization Pros:  All air is filtered in harsh environments  Air straightening  Pressure equalization Cons:  Higher pressure drop through filter  Space requirements  Maximize plenum between fan and filter
  29. 29. Evacuation Pros:  Maximize cooling air  Saves space  Lower filter pressure drop Cons:  Not all air is filtered  Potential air bypass  Limited air straightening / pressure equalization from filter
  30. 30. Pressurization + Evacuation Pros:  Maximum cooling air  Bigger air filters Cons:  More space  Higher power requirements  Increased noise
  31. 31. Electronics Equipment Air Filters  NEBS Certified  UL Listed and CE Certified  Support compliance to UL 60950  EMI shielding capabilities  Special metal finishes for corrosion protection / enhanced EMI  Free custom prototypes for R&D support
  32. 32. Electronics Equipment Filter Products Metal Mesh Air Filters  Rugged frame assemblies  Outdoor and other harsh environments  Available with integrated EMI shielding  Washable and reusable  Ultra-thin options for limited space applications
  33. 33. Electronics Equipment Filter Products Flex-Frame Air Filters  Flexible flame retardant, polypropylene frames  UL 94 recognized flame rating  Conform to radius-type air intake bezels  Laser cutting capabilities for intricate frame designs  Snake around internal electronic components and chassis obstructions  Non-conductive for electronics applications
  34. 34. Electronics Equipment Filter Products Quadrafoam Air Filters  UL 94 recognized flame rating  Low pressure drop  Broad range of porosities (PPI)  ASHRAE efficiency ratings up to MERV 8  30% - 90% ASHRAE arrestance most popular  Ideal for networking / electronic enclosures
  35. 35. Electronics Equipment Filter Products High Efficiency Air Filters  Extends equipment operating life  Enhances air quality  Custom MERV 11, 13 & 15  Captures dust, mold & pollen  Commercial / industrial applications  Rigid aluminum frame and robust media for durability
  36. 36. Electronics Equipment Filter Products Outside Plant (OSP) Filters  UPE Membrane Filter Media (Ultra-High Molecular Weight Polyethylene with Microglass Backer)  Cleanable Pre-Filter  Tested for Wind Driven Rain / Water Intrusion  Blocks Salt Fog
  37. 37. Air Filter Specification Process  Determine standards & specifications – NEBS, UL 60950, CE  Understand flame rating requirements – UL 94  Select air filter dimensions (length, width, thickness)  Select appropriate framed air filter model  Determine handles / tabs or other fixture add-ons  Select flame retardant media (thickness and porosity)  Calculate linear airflow velocity  Calculate maximum filter initial resistance  Select media color and special metal finishes  Prepare filter drawing – 3D CAD / online tools  Request prototypes – test and evaluation
  38. 38. Enclosure – Fire Safety
  39. 39. Enclosure – Fire Safety
  40. 40. Enclosure – Fire Safety Fire audits have confirmed the effectiveness of UAF flame retardant air filters  Example of filters containing the spread of fire to neighboring equipment
  41. 41. Compliance Applicable Filter Standards:  UL 94 recognition  UL 900 registration  EU Directive 2002/95/EC  China RoHs  EU No. 1907/2006 REACH
  42. 42. EMI Air Filters & Vents In addition to air filters…  Air filters with EMI shielding capabilities  EMI vent panels  Honeycomb fireblock Panels  Watch the PyroCide vent Video - next slide
  43. 43. Review  Consider air filters early in the design process  Understand industry & customer requirements  Analyze custom enclosure configuration for total system thermal and design management  Specify filter utilizing the latest technological innovations, including EMI shielding  Ensure customers can acquire replacements
  44. 44. 1624 Sauget Industrial Parkway, Sauget, IL 62206 P: 618.271-7300 | F: 618.271.8808 | www.uaf.com
  45. 45. Questions? Editor Name Design World @wtwhmedia.com Phone: 440.234.4531 Twitter: @DW_Motion Dan Krupp Universal Air Filter dankrupp@uaf.com Phone: 618.271.7300
  46. 46. Thank You  This webinar will be available at designworldonline.com & email  Tweet with hashtag #DWwebinar  Connect with Design World  Discuss this on EngineeringExchange.com

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