Axial Fan Cross Reference
Axial Fan Cross Reference
Air Curtains by Canadian Air Systems
Air curtains are widely accepted across North America and Europe as a standard fitment in public buildings, retail stores and industrial applications such as coolers, freezers and cold storage facilities. Air curtains are generally associated with retaining heat energy in cold climates, and the energy savings are substantial.
In the retail environment, research has shown that an open door increases trade by up to 40% as it is an invitation to come in and shop yet retail stores and supermarket air-conditioning systems are ‘energy-hungry’ so it would therefore seem logical to save as much of the cold air as possible, considering the cost to make it cold in the first place. Public buildings, like airports and convention centres, which have high demand air-conditioning systems need to have open doors to allow access and, while some facilities have motion detector-activated sliding doors, usually of glass, this solution is costly, thermally not very efficient and generally just a way of reducing draughts.
The idea of having an invisible barrier across the doorway to enable unimpeded access yet effectively prevent temperature flow, dust, odours and insects to cross, is appealing in itself but add to this the cost-saving in reducing energy use and the idea becomes more compelling, especially as air curtains are relatively inexpensive items.
Appropriate for industrial applications
Keeping warm air out of insulated cold stores or refrigerated facilities is the Number 1 objective yet a mockery is made of this premise when freezer of chiller doors are left wide open and, in some cases, chocked open to facilitate the movement or storage of perishables.
Properly installed air curtains cut cold air loss and reduce humidity, thus reducing the load on refrigeration or air-conditioning plant and thereby saving energy by reducing compressor running time, maintenance, gas and recharging intervals. These units are an alternative to fast-acting roller doors and PVC slat curtains, and can be situated above or to the side of industrial doorways to create a powerful seal across the opening, keeping cold air in while providing complete visibility and access. This means that forklift drivers don’t have to get out of their cabs to open and close doors so that moving from one area to another is a lot easier and productive. Unlike plastic slat curtains, which quickly become opaque with use, an air curtain provides 100% visibility at all times. Units have been installed in loading bays, factories, hangars and production facilities, such as food processing and pharmaceuticals, where differential temperatures are encountered overseas.
Insect an pest control a benefit
An air curtain supplying a high-velocity sheet of air across a door opening will prevent flies and other flying insects from entering a building. This is particularly important in restaurants and bars, and any premises where food is manufactured or served – where strict environmental health regulations apply. It is an extremely beneficial side effect as an air curtain is primarily employed for climate control yet units are also installed overseas for insect control alone.
The most effective air curtain design for insect control has a nozzle that can angle the air stream away from the area to be protected. An angle of about 20 from the vertical is usually optimal. The unit should meet or exceed UK Department of Agriculture and US Federal Drug Administration standards, which call for an air stream of 50 mm to 120 mm wide at the nozzle, capable of producing a minimum velocity of 8 m/s of air 1 m above the floor and across the entire door opening to ensure there are no gaps for the insects to enter.
Apart from flying insects, air-curtain manufacturers say rodents are also discouraged from entering a building. They claim that rats, mice and other furry intruders do not like the sensations of an air curtain on their fur and will avoid it!
Design and installation
The construction an design of the equipment that generates an air curtain is quite simple – a cross flow or axial fan, driven by a constant or variable speed electric motor contained in a simple enclosure with an air inlet and outlet, sized to produce a rate of flow to suit the opening and the velocity required to prevent heat transfer.
Off-the-shelf models are available from a number of suppliers and units are also custom made but, where wide entrances are involved that exceed the capacity of one fan unit, tow or more are stacked side by side (or on top of one another in the case of side mounting of very tall openings) and operated simultaneously, meaning that there is probably no limit to the size of the opening that can be accommodated.
By directing a jet of air either from top to bottom or horizontally across a doorway, this invisible ‘barrier’ reduces the rate of heat and moisture flow through the opening and, according to independent research conducted by the US-based Refrigerated Research Foundation and the University of Illinois, this can be as much as 60% to 80% in refrigerated facilities such as cold storage buildings, cold rooms and freezers.
These simple devices can be retrofitted or specified as part of the initial refrigeration or climate control design, reducing compressor running time or using a smaller capacity unit to achieve the same performance.
A variety of installation options are available to cater for building and architectural features such as suspended ceilings but the most common is simply bolting the unit to the wall above the doorway and connecting a single phase supply and switch to the unit.
Power consumption is negligible for a normal sized doorway opening – about 300 W. Some units can even be specified with a heating element to warm an enclosed area.
Air curtains block the flow
An air curtain simply creates a block in the air flow through an opening. The air velocity of the curtain must then be great enough to direct the resulting velocity downward and ensure that a small part of the air stream goes out while the main air flow comes back into the room.
For additional information please refer to http://www.nis-co.com/aircurtain/Index.html.
Oleg Tchetchel
Ventilation Systems Designer
Canadian Air Systems
http://www.nis-co.com
http://www.nis-co.com/airknife/Index.html
About the Author
Oleg Tchetchel
Designer of Air Moving Systems
Canadian Air Systems
http://nis-co.com/contact/Index.html
Ref-CAFT 001
Duratrax Ice
Duratrax Ice
Choosing a Lipo Charger
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Duratrax Intellipeak ICE Competition Charger (DC) $93.61 EATURES Handles 1-10 NiCd or NiMH cells, and 1-4 lithium-ion (Li-Ion) or lithium-polymer (Li-Po) cells. Wide adjustable current ranges for fast charge (0.1-8.0A) and discharge (0.1-10.0A) are ideal for electric cars, trucks and boats. Four charge modes, linear, reflex, impulse and 4-step plus optional battery temperature monitoring (sensor not included. “Constant current/constant volta… |
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IntelliPeak AC/DC Pulse Charger $95.99 This is an IntelliPeak AC/DC Pulse Charger for Charging/Discharging / Nickel Cadmium (NiCd) and Nickel Metal Hydride (NiMH) Battery Packs. / / Note: Do Not Discharge Battery Cells smaller than Sub-C Size / (“Sub-C” is one size smaller than a “C” size). / / *** Five-Year Warranty *** / / FEATURES: Peak charges Nickel-Cadmium batteries using specialized peak charging / technology as well as Nicke… |
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Duratrax IntelliPeak ICE Temperature Sensor $6.16 This is the Temperature Sensor for the Duratrax ICE Battery Charger DTXP4170, / and the Great Planes TRITON, TRITON2 and TRITONZX chargers. / / FEATURES: Monitors battery temperature during Charging or Discharging / Adjustable clamp fits batteries from ¼”" (7mm) to ¾”" (19mm) thick / / INCLUDES: One Temperature Sensor for the DuraTrax ICE charger and the Great / Planes TRITON series chargers w… |
Why does nitro rc truck stall when throttle is pushed?
It also runs in idle for a while but will stall of a sudden stall too.
traxxas rc trucks why cant i get my truck to run it almost kicks over then dies?
do i need to adjust the carburator
Mattel Barbie History
Mattel Barbie History
Ladies, how many of you had a “Barbie Doll” when you were coming up as a kid ?
Barbie turns 50 today. You know, the busty, blonde, bimbo girl from
Mattel I believe. And she has a boyfriend named Ken. Rumor has it
that he may be gay. Anyway, 50 years of Barbie. You would think
that by now, people would be more understanding and sympathetic
to the so called bimbo gal down the street. Now there have been some
major advancements throughout history. The Women’s movement came along in the 1970′s. Then they demanded that Barbie be treated
with respect. So as a result, you see more cosmopolitan style Barbie
Dolls on the market, and some of them are even housewives. How
about that. Well let me ask you this. Have you ever had a Barbie
Doll when you were coming up as a kid. I had one before, but not as a child. But she
was a real live one. Her name was Tammy. He, he, he, he…………
(laughing to myself like Homer Simpson)
Tell us if you don’t mind. What do you
think about the whole Barbie Doll
ideology………………
I’ll admit it,i was obsessed with Barbie dolls when i was a kid.I had about 10 Barbies and still wanted more.Never been interested into having Ken,though.Oh,and never even thought to be like Barbie,it’s never been my wish….Just liked them because they were the best looking toys out there and liked their blonde hair(had a fascination for their hair).Never thought of them as role models,or hot,or sexy.And i never wanted to have a body like theirs.Plus,even as a child,i still thought their body was disproportionate and unrealistic,so i never took them seriously.But always liked them with really really long hair.
And,another reason why i liked them so much was,(ok,this is going to sound self-absorbed) that i used to have my hair really long throughout my childhood and was really really proud of it.So,yeah,that’s why i was so crazy abt their hair.
However,once i grew up to be a pre-teen,became tomboy….now i’m 21 and still am a tomboy,not as much as back when i was 13-18,but,still basicly am.So no,just because one liked/s Barbies,doesn’t mean they will become or have become or is a bimbo.
Zadzooks: Toy Fair 2009, Mattel’s History of Barbie
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Monster High Dead Tired Ghoulia Yelps Doll $11.99 Meet the coolest children of some of history’s most infamously famous Monsters in the Monster High Dead Tired Doll Collection. Ghoulia Yelps is the daughter of the infamous Zombies. After a long week at school, the girls are dead tired and in need of a little rest and relaxation. These are the trendiest ghouls at Monster High in their stylish sleepover fashions. They get together for a sleepover … |
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Barbie Collector – Dolls of the World – Princess of Ancient Mexico Barbie $19.99 Barbie looks like royalty as Princess of Ancient Mexico. Like all noble people, her clothes are made of brightly colored cotton. Her decorations are made of gold and feathers. The most prized feathers of all are the iridescent green ones from bird called the Quetzal. Princess of Ancient Mexico Barbie doll represents a culture from world history. Add to your Dolls of the World collection or start o… |
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1988 HAPPY HOLIDAYS BARBIE – 1ST IN COLLECTIBLE SERIES $200.00 1ST BARBIE IN SPECIAL “HAPPY HOLIDAYS” SERIES – MOST COLLECTIBLE IN HER RED SPARKLY HOLIDAY DRESS!… |
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Collector’s Guide to Dolls of the 1960s and 1970s: Identification and Values, Vol. 2 $14.70 This doll book has all-new photographs and no repeats from the first volume. Well-known dolls featured include Barbie, Blythe, Sears exclusive Mini Martians, Thumbelina, Liddle Kiddles, Tressy, Tammy, Peteena, celebrity dolls, pull-string talking dolls, battery-operated walking dolls, and many more. Dolls from all the major toy companies are covered – Madame Alexander, Deluxe Reading, Hasbro, Hors… |
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Barbie and Ruth: The Story of the World’s Most Famous Doll and the Woman Who Created Her $3.66 The tragic and redeeming story of how one visionary woman built the biggest toy company in the world and created a global icon. Barbie and Ruth is the entwined story of two exceptional women. There’s Barbie: the diminutive yet arrestingly voluptuous doll unveiled at the 1959 Toy Fair who became the treasure of 90 percent of American girls and their counterparts in 150 countries. She went on t… |
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The Ultimate Barbie Doll Book $39.95 Complete descriptions, values, model numbers, dates, and markings for more than 1,000 dolls will assist in identification of these highly sought-after dolls. Barbie and all her friends made from 1959 through 1995 are depicted in 1,800 full-color photographs…. |
Circuit City Jobs
Circuit City Jobs
What Are The Essentials For Your Work From Home Jobs?
The German philosopher Immanuel Kant said that if you sit at home alone at your empty kitchen table, eventually, the “whole world will come to you.” Well, today you don’t need the great mind of a philosopher to make the entire world come into your living room. What you do need for all your work from home jobs is a phone jack.
We live in a unique time in history; some might say a perfect time to change jobs and start to work from home. Satellites, fiber optics, the integrated circuit and other communications miracles mean that you can be just about anywhere in the developed world and establish communication with anyone.
The telephone, the fax machine, the computer, the modem — all of these are not only affordable by any middle-class citizen; they are the key to eliminating your need to drive a hectic freeway everyday to get to a place of work outside your home.
With these devices at our disposal, we should allow ourselves to “think globally.” Too often, work from home jobs focus on the narrowest market, the neighborhood, the county, the city or state. This is fine if you are providing a local service and are content with a certain moderate level of income. But if you want the big bucks, you should not think small. Also, you should not believe that, just because with your job you’re working from home, you cannot compete with the big guys.
The purpose of any business is to seek assess and seek out every possible market for its products and services, to ascertain whether these markets have the ability to buy these products/services, to determine whether there is sufficient profit in these markets to warrant approaching them, and, once positive assessment has been made, to launch a sustained marketing campaign that gets a significant percentage of this market to purchase the product or service in question.
Your home telecommunications machines will not only enable you to do this, but they can also help you overwhelm larger, more cumbersome traditional businesses that are your competition.
With any of your work from home jobs, you will not have all of the disadvantages of your more traditional competitors: no office rent, equipment or expense; no employees to pay salaries and fringe benefits for; no time wasted on meetings, employee problems, paid sick leave, etc.
All the money your competitors spend on heating the office and buying furniture could better be spent on the actual marketing itself.
With your work from home jobs, you will be already positioned where the traditional business is currently struggling to move: toward the lowest possible overhead and the greatest possible concentration of dollars on products/service development and product/service marketing.
So, jobs where you work from home take full advantage of three major goals of modern business success:
(1) Vastly reduced overhead
(2) Easy access to a global market
(3) Full advantage of telecommunications.
To not have the basic telecommunications toys — computer, modem, fax, and telephones is impossibly stupid. Still, even in this day and age, many of people strongly resist the one element that is undoubtedly the heart and brain of any successful work from home job — the computer. The computer is an essential and one definitely not to be left out when starting any of your work from home jobs. And remember, learning to use a modern computer is easier than learning to drive a car, so you have no excuse not to plunge forward.
To your success
Paul Egan
About the Author
For more information about work from home jobs and three FREE ebooks to help you on your way visit:
http://www.pjeaffiliate.com
How is it working for Circuit City?
I have been looking for a new job and have been considering applying to both best buy and circuit city.
I was just wondering what any current or past employees of Circuit City thought of the job.
Any info would be awesome. Thanks.
I know that they laid off all the higher paid people to make room for new hires (or the original ones if they wanted to accept a smaller wage).
Other than that I am wondering how it is working there.
how about reading the news about circuit city instead of asking it here?
Circuit city, 34K jobs lost
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Walter Beasley [Self Titled] 1. I’m So Happy 2. On the Edge 3. Call Me 4. Jump on It 5. Back in Love Again 6. Tenderness 7. Nothin’ But a Thang 8. Where 9. I’m So Happy [12" Mix] Walter Beasley’s self-titled 1987 debut for Polydor Records offered this new talent on the smooth jazz block as a triple threat: Beasley showed himself not only to be a talented saxophonist, but a fine songwriter and vocalist as well. Though… |
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Tale of Two Cities: Circuit City Story $9.95 In early 2009, more than 34,000 American workers lost their jobs and one of retail’s greatest stories of entrepreneurship abruptly came to an end. After 60 years in business and a presence in every major U.S. city, Circuit City seemed to just disappear. How and why did it happen? A Tale of Two Cities: The Circuit City Story is a feature-length documentary that chronicles the fascinating history… |
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A Tale of Two Cities: The Circuit City Story $1.99 … |
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Yogi in the City/Legal Eagle Lion/Hasty Tasty $1.99 … |
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Argument for the James River & Kanawha Co: In the suit of Eugene Davis et al. vs. James River and Kanawha Company and the state of Virginia on the … in the Circuit Court of the city of Richmond … |
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CIRCUIT CITY UNPLUGGED: WHY DID CHAPTER 11 FAIL TO SAVE 34,000 JOBS? $14.67 The BiblioGov Project is an effort to expand awareness of the public documents and records of the U.S. Government via print publications. In broadening the public understanding of government and its work, an enlightened democracy can grow and prosper. Ranging from historic Congressional Bills to the most recent Budget of the United States Government, the BiblioGov Project spans a wealth of gover… |
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Need for Speed: Undercover $19.99 Need for Speed Undercover Wii… |
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The Italian Job $16.50 The Italian Job lets you live the plot of the new remake of a classic 1960′s heist film, as you get vengeance on the man who betrayed you! Bonus features include movie footage, concept art and more… |
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Italian Job $5.00 The Italian Job lets you live the plot of the new remake of a classic 1960′s heist film, as you get vengeance on the man who betrayed you! Bonus features include movie footage, concept art and more… |
nitro rc trucks?
wat would be the best buy and quality rc nitro truck im a beginer and dont want a hunk of junk i only have 350$ to spend at most and i want it to be fast i been looking on ebay at the avalanch XP and the tmaxx 3.3 and the monsoon truggy
Is it possible to hydroplane over water with a nitro rc truck?
Is it possible to hydroplane over deep water with a 1:10 scale nitro rc truck? How fast do you have to go?
Duratrax Cliff Climber Upgrades
Duratrax Cliff Climber Upgrades
Upgraded Team Losi Mini Rock Crawler – 1280 x 720 HD
