Air Cleaning
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 ORECK XL AIR PURIFIER BRAND NEW w TRUMAN CELL CLEANING AIRPB XL Tabletop Pro $159.95 Time Remaining: 27d 7h 11m Buy It Now for only: $159.95 |
 Blueair AV501 AV 501 HEPA Air Purifier w 3 particle filters clean air ionizer $200.00 Time Remaining: 14h 10m |
 New LightAir IonFlow 50 Surface Air Purifier Continuous Environment Cleaning $199.99 Time Remaining: 3h 49m |
 Honeywell HHT 011 HEPA Clean Compact Air Purifier $47.95 Time Remaining: 17d 6h 23m Buy It Now for only: $47.95 |
 Ionic Air Purifier Ozone Ionizer Cleaner Fresh Clean Air Living Home Office New $129.95 Time Remaining: 5h 7m Buy It Now for only: $144.95 |
 NEW Honeywell COMBO Pack HEPA Clean Air Purifiers 2 PK $139.99 Time Remaining: 6d 16h 23m Buy It Now for only: $139.99 |
 Ionic Air Purifier Ozone Ionizer Cleaner Fresh Clean Air Living Home Office New $129.95 Time Remaining: 1d 5h 7m Buy It Now for only: $144.95 |
 Eastern Electric Clean Air Master System 500 Cleaner Ionizer $9.95 Time Remaining: 14h 52m |
 Germ Guardian 3 in 1 HEPA Air Cleaning Purification System $159.00 Time Remaining: 19d 8h 31m Buy It Now for only: $159.00 |
 Supreme Air Cleaning System Replacement Filter 0344KC $4.00 Time Remaining: 3h 17m |
 12V Car Vehicle Air Cleanser Cleaning Purifier Purifying Deodorizer Tool NEW $26.97 Time Remaining: 21d 9h 10m Buy It Now for only: $26.97 |
 Honeywell HEPA Clean Air Purifier Model HHT 085 HD $29.95 Time Remaining: 13h 51m |
 Ionic Air Purifier Ozone Ionizer Cleaner Fresh Clean Air Living Home Office New $129.95 Time Remaining: 2d 5h 7m Buy It Now for only: $144.95 |
 NEW Germguardian Digital 3 in 1 HEPA Air Cleaning Purification System UVC AC5250 $153.00 Time Remaining: 16h 51m Buy It Now for only: $153.00 |
 XL15S AIR PURIFIER Living Air FRESH LIVING CLASSIC wood walnut Super clean $31.00 (2 Bids) Time Remaining: 3d 9h 17m |
 duracraft air cleaning purifier system with 3 power levels da 1010 $19.95 Time Remaining: 28d 9h 6m Buy It Now for only: $19.95 |
 conair clean air $5.99 Time Remaining: 7h 1m |
 Kenmore Air Cleaning System Dual Filter Replacent Cartridge 32 83137 $24.99 Time Remaining: 19d 16h 59m Buy It Now for only: $24.99 |
 AIRTECH 2000 PLUG CLEAN UV c AIR PURIFIER SILENT OZONIZER ELIMINATES ODORS $14.00 Time Remaining: 16h 2m |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 QO $164.92 Time Remaining: 1d 11h 52m |
 AIR PURIFIER NEW COMMERCIAL INDUSTRIAL 3000mg hr OZONE MACHINE GENERATOR CLEAN $96.96 Time Remaining: 14d 9h 17m Buy It Now for only: $96.96 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 HF $164.92 Time Remaining: 1d 11h 52m |
 6 PACK 3M FILTRETE MICRO ALLERGEN AIR CLEANING FURNACE FILTERS 14 x 25 x 1 $39.99 Time Remaining: 6d 21h 26m Buy It Now for only: $39.99 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 PL $164.92 Time Remaining: 1d 11h 58m |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 RT $164.92 Time Remaining: 1d 12h 22m |
 12 PK 3M FILTRETE MICRO ALLERGEN AIR CLEANING FURNACE FILTERS 14 x 25 x 1 $77.49 Time Remaining: 8d 18h 39m Buy It Now for only: $77.49 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 EP $164.92 Time Remaining: 1d 12h 28m |
 NEW 3 Pack Kaz Dynafilter K14 3P Humidifier Air Cleaning Replacement Cartridges $5.99 Time Remaining: 18d 10h 8m Buy It Now for only: $5.99 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 CL $164.92 Time Remaining: 1d 12h 34m |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 FV $164.92 Time Remaining: 1d 12h 34m |
 Ionic Air Purifier Ozone Ionizer Cleaner Fresh Clean Air Living Home Office New $129.95 Time Remaining: 14d 7h 23m Buy It Now for only: $129.95 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 WL $164.92 Time Remaining: 1d 12h 36m |
 Kenmore Hepa 100 Air Cleaning $39.00 Time Remaining: 28d 13h 2m Buy It Now for only: $39.00 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PL61 JH $164.92 Time Remaining: 1d 12h 49m |
 Filter Breeze Spray Air Freshener Simply Clean Qty 1 $5.99 Time Remaining: 28d 7h 14m Buy It Now for only: $5.99 |
 Guardian Technologies AC 4000 Hygia Complete Air Purifier Cleaning System $19.99 Time Remaining: 10h 25m Buy It Now for only: $35.00 |
 Living Air model 880 ozone ionizer air cleaning machine $39.95 Time Remaining: 1d 4h 58m Buy It Now for only: $59.95 |
 Germguardian Digital 3 in 1 HEPA Air Cleaning Purification System UVC AC5250 NEW $129.99 Time Remaining: 21d 20h 51m Buy It Now for only: $129.99 |
 HONEYWELL QUIETCLEAN 3 IN1 AIR CLEANING SYSTEM HFD 137 N $34.95 Time Remaining: 7h 10m |
 Germ Guardian 3 in 1 HEPA Filter Air Cleaning System AC5250 28 Tower New $158.95 Time Remaining: 25d 4h 39m Buy It Now for only: $158.95 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 YR $164.92 Time Remaining: 3d 11h 23m |
 NEW ALL PRO SPC 85 PORTABLE PROPANE FORCED AIR HEATER GARAGE SHOP CLEAN BURNING $199.99 Time Remaining: 15h 31m |
 FILTER QUEEN DEFENDER AM4000 AIR PURIFIER CLEAN $89.95 Time Remaining: 19d 12h 54m Buy It Now for only: $89.95 |
 HONEYWELL PET CLEAN AIR PURIFIER HHT 016 MP $9.95 Time Remaining: 7h 10m |
 Clean Air Ball Air Purifier CAB011WHT White 1 ea $39.99 Time Remaining: 7d 8h 55m Buy It Now for only: $39.99 |
 Sunpentown AC 3000i AC3000i Clean HEPA Air Cleaner NEW $80.97 Time Remaining: 1d 17h 51m |
 Ionic Pro COMPACT Air Purifier ca 200 Just Wipe Clean EUC Works Perfectly $34.99 Time Remaining: 25d 12h 17m Buy It Now for only: $34.99 |
 Magic Clean HEPA Air Cleaner Purifier Filter w Ionizer $79.00 Time Remaining: 3d 19h 41m Buy It Now for only: $86.90 |
 HONEYWELL PET CLEAN AIR PURIFIER MODEL HHT 082 NEW IN BOX $65.99 Time Remaining: 3d 1h 6m |
 Honeywell Ultra Efficiency Air Cleaning Filter 16x20 $25.00 Time Remaining: 28d 6h 14m Buy It Now for only: $25.00 |
 Item image Honeywell HHT 011 HEPA Clean Compact Air Purifier $32.99 Time Remaining: 8h 58m |
 Amaircare Roomaid Compact HEPA Filter Air Purifier Clean For Truck or RV $109.99 Time Remaining: 27d 13h 29m Buy It Now for only: $109.99 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 WL $164.92 Time Remaining: 3d 10h 25m |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 PL $164.92 Time Remaining: 3d 10h 26m |
 NEW IN FACTORY SEALED BOX HONEYWELL 3N1 UV HEPA CLEAN AIR PURIFIER HHT 145 TGT $135.00 Time Remaining: 29d 13h 54m Buy It Now for only: $135.00 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 EP $164.92 Time Remaining: 3d 10h 39m |
 NEW 3M Filtrete Ultra Clean Bedroom Air Purifier FAP02 RC $82.99 Time Remaining: 22d 5h 31m Buy It Now for only: $82.99 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 RT $164.92 Time Remaining: 3d 10h 43m |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 JH $164.92 Time Remaining: 3d 10h 44m |
 Filtrete FAPF00 4 Air Cleaning Filter by 3M New $14.89 Time Remaining: 29d 8h 3m Buy It Now for only: $14.89 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 FV $164.92 Time Remaining: 3d 10h 58m |
 Brand NEW Germ Guardian AC5250 Air CLEANING 3 IN 1 in BOX $137.99 Time Remaining: 24d 14h 4m Buy It Now for only: $137.99 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 CL $164.92 Time Remaining: 3d 11h 24m |
 New Germ Guardian AC5250 Digital 3 in 1 Air Cleaning System 28 Tower $154.99 Time Remaining: 24d 12h 22m Buy It Now for only: $154.99 |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 QO $164.92 Time Remaining: 3d 11h 33m |
 4 NEW AIR FILTER PURIFIER CLEAN FRESH UVCLEANER Ion PJ61 HF $164.92 Time Remaining: 3d 11h 37m |
 EcoGecko Mini Water Based Air Purifier Revitalizer Clean Air Freshener Black $29.99 Time Remaining: 22d 8h 16m Buy It Now for only: $29.99 |
 KAZ DYNAFILTER AIR CLEANING CARTRIDGE LOT OF 3 N 1207I $7.95 Time Remaining: 7h 8m |
 Ionic Pro CA500 Air Purifier CLEAN gently used condition Rush shipping Ionizer $39.99 Time Remaining: 3d 16h 42m Buy It Now for only: $39.99 |
 AUSTIN AIR PURIFIER HEALTHMATE HEPA CLEAN $125.00 Time Remaining: 4d 14h 58m Buy It Now for only: $169.00 |
 3M Filtrete Air Cleaning Filter FAPF02 Fits Model Series FAP02 3 FILTERS NEW $27.99 (1 Bid) Time Remaining: 5d 18h 13m |
 Ionic Pro COMPACT Air Purifier ca 200 Just Wipe Clean Red Light Cleaning Repair $14.99 Time Remaining: 26d 1h 35m Buy It Now for only: $14.99 |
 LIVING AIR FLAIR AIR PURIFIER EPA CERTIFIED VERY CLEAN ITEM $49.99 Time Remaining: 3d 13h 53m Buy It Now for only: $59.99 |
 Honeywell Tower Air Purifier Permanent HEPA Filter Smoke Clean Home Office NEW $119.95 Time Remaining: 1d 7h 38m Buy It Now for only: $119.95 |
 Sunpentown AC 3000i AC3000i Clean HEPA Air Cleaner NEW $80.97 Time Remaining: 3d 17h 51m |
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Cuisinart DCC-1200 Brew Central 12-Cup Programmable Coffeemaker
List Price:  |
DescriptionA striking blend of retro style and modern technology. Programmable for brewing up to 24 hours in advance. Setting for 1 to 4 cups ensures full-bodied flavor and aroma. BrewPause™ feature lets you enjoy a cup before brewing is finished... |
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A Close Shave
Sale Price: $1.99 |
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Dora Saves The Mermaids
Sale Price: $3.99 |
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Engineering Evil
Sale Price: $1.99 |
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Bionaire Odor Grabber Filter Pack Set, 2 sets/pack
List Price: |
DescriptionBionaire Odor Grabber Filters 2-PACK includes 2 sets of filters for use with the Bionaire Odor Grabber Litter Box 78800-100. Advanced odor filter targets and traps litter box odors through a proprietary blend of activated Carbon and Zeolite... |
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Van Ness Air Filters 12 Pack for CP6/CP7
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DescriptionVNESS AIR FILTERS FOR CP6&CP7 made of Zeolite for maximum odor control, fits CP6 & CP7 6 1/2' x 4 7/16' x 3/16' thick |
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Bon-Aire Original Ultimate Aluminum Hose Nozzle ( Colors may vary )
List Price: |
DescriptionTired of garden hose spray nozzles that leak, clog, or soak you with unpredictable sputters? Step up to professional quality with the Original Ultimate Hose Nozzle from Bon-Aire. Built tough for a lifetime of use, this spray nozzle is virtually indestructible and leak-proof... |
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K&N 99-5000 Aerosol Recharger Filter Care Service Kit
List Price: |
DescriptionK&N AIR FILTER RECHARGER SERVICE KIT, AEROSOL SPRAY CAN -- For Use On K&N Filters Only, Six Step Maintenance System Designed To Recharge Your K&N Air Filter, Restores Air Flow Efficiency |
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Meguiar's 6.5-Inch Soft Buff Foam Polishing Pad
List Price: |
DescriptionOne 6-1/2" Soft Buff Foam Polishing Pad Restores high gloss Exclusive foam cell structure improves air flow Quick change Velcro backing systemSoft Buff Foam Polishing Pads have active polishing action to remove minor surface imperfections. |
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New Fix-It-Yourself Manual: How to Repair, Clean, and Maintain Anything and Everything In and Around Your Home
List Price: |
DescriptionThe New Fix-It-Yourself Manual is the ultimate do-it-yourselfer's guide. This book shows you how to repair, clean and maintain anything and everything in and around your home. |
Reverse Flow Dust Collectors for Air Cleaning
Canadian Air Systems Co. is a North American manufacturer of industrial dust collectors and dust collection systems. Dust collecting equipment is available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction.
The dust collectors are used extensively in industry for a wide range of applications. They require more space than most other types of air cleaning devices, necessiating outdoor installation in most cases. One of the most widely used type of dust collector is Fabric Dust Collector.
Fabric arresters are high efficiency, medium cost collectors. The effectiveness of passing air or gas through a fabric at low velocity has been recofnized and used for many years in air cleaning devices. Fabric is arranged in envelope or tubular (stocking) shapes. While removal appears to take place by a staining action of the media, in reality dust collection is obtained by building up a mat of the material on the dirty side of the media. This mat provides the actual filtering or straining bed. By means of this bed a high degree of removal is obtained even on sub-micron size particles.
As dust is collected on the fabric, resistance to air flow increases. Periodically the fabric must be reconditioned by shaking, vibrating, reverse jet or reverse-flow collapse which agitates suffitiently to remove the bulk of adhering material allowing it to drop into the dust hopper. In most collectors air flow must be stopped during reconditioning, otherwise released material will be re-entrained and redeposited on the fabric. Sufficient dust must adhere to the fabric to maintain the dust mat needed for maximum efficiency; therfore, after reconditioning the pressure drop will be considerably higher than loss through new fabric. Periodical cleaning of filter media is one of the most important tasks in the dust collector design. Reverse flow cleaning is generally choosen when the volumetric flow of gases is very large.
This method of cleaning inherently requires a compartment design beacause the reverse flow needed to collapse bags entrains dust that must be returned to on-line compartments of the fabric filrh compartment is equipped with one main shut-off valve and one reverse gas valve, whether the system is blown-through or drawn-through. A secondary blower and duct system is required to reverse the gas flow in the compartment to bcleaned. When a compartment is isolated for cleaning, the reverse gas circuit incrases the volumetric flow and dust loading through the collector's active compartments.
The fabric medium is reconditioned by reversing the direction of flow through the bags, which partially collapse. After cleaning, the reproduction of gas is dislodged dust to fall into the hopper.
Reverse flow cleaning reduces the number of moving parts in the fabric filter system - a maintenance advantage, especially when large volumetric flows are cleaned. However, the cleaning or reconditioning is less vigorous than other methods, and the risidual drag of the reconditioned fabric is higher. Reverse flow cleaning of dust collectors is particularly suited for fabrics like glass cloth, that require gentle cleaning. Reverse flow dust collecting bags are usually 8 to 12 inches in diameter and 22 to 33 feet long and are generally operated at low velocities in the 2 to 4 fpm range. As a consequence, reverse air dust collectros tend to be substantially larger than pulse jet dust collector designs of similar capacity.
For ambien air applications, a wooven cotton of polypropylene fabric is the usual selection for reverse flow cleaning. For higher temperatures, wooven polyester, glass fiber, or trademarked fabrics are often used. In recent years glass cloth has come into wide use because of silicone treatment of the glass fibers and employment of reverse flow techniques for cleaning. Silicone treatment provides a lubricant between fibers and increases fabric life.
Reverse flow dust collectors are limited to air conditions dry enough to prevent condensation or free moisture deposition on the fabric. With hygroscoping materials, there will be a bonding tendency between particles and fabric under high relative humidity even though no condensation takes place. Maximum recommended temperature for cotton fabric is 180 F, for wool 200 F. Higher temperatures can be handled by using synthetic materials including nylon or orlon fabrics as well as glass cloth and, occasionally, fine metallic mesh. The synthetic fabrics mau be used up to 300 F while glass cloth is acceptable to 550 F.
Rate of flow through the media varies with dust collector type, application and dust concentration. Ratings are usually selected so pressure drop will not exceed 5" WG. The smaller the particle, the more rapid the resistance rise for a given loading. For the same air flow rate and dust loading, resistance rise increases directly in proportion to time.
For additional information please refer to http://www.nis-co.com/0/Index.html.
Oleg Tchetchel
Air Systems Designer and Engineer
Canadian Air Systems
http://www.nis-co.com
http://www.nis-co.com/1/Index.html
About the Author
Chemical Physics Engineer