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An air door or air curtain is a device used for separating two spaces from each other Ricky Nolasco Angels Jersey , usually at the exterior entrance. The most common configuration for air curtains is a downward-facing blower fan mounted over an opening. Normally this opening is an entrance to a building, and the air curtain is intended to help keep flying insects out by creating forceful turbulence. It also helps keep outside air out, avoiding cold drafts by mixing-in warm air from the air curtain. The fan must be powerful enough to generate a jet of air that can reach the floor.

The most effective air curtain for containing heated or cooled air inside a building with an open door will have a high face velocity at the opening, generated by top-down flow, recovered by a recirculating air plenum and duct return to the source fans. This configuration is available for new construction Reggie Jackson Angels Jersey , but difficult to provide in existing buildings. The air curtain is most effective with low exterior wind velocity. At higher wind velocities, the rate of air mixing increases and the outside air portion of the total face flow increases. Under ideal conditions of zero wind, the effectiveness of the air curtain is at its maximum.

For industrial conditions, high face velocities are acceptable. For commercial applications like store entrances, user comfort dictates low face velocities Nolan Ryan Angels Jersey , which reduce effectiveness of separation of exterior air from interior air.

Non-heated air curtains are often used in conjunction with cold storage and refrigerated rooms. Airflow through a door depends on wind forces, temperature differences (convection), and pressure differences.

Air curtains can be used to save energy by reducing the heat transfer between two spaces, although a closed and well-sealed physical door is much more effective. A combination is usually utilized; when the door is opened air curtain turns on, minimizing air flow from inside to outside and vice versa

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.

Canadian Air Systems Co. is a world's leading designer and manufacturer of industrial process air-curtains and environmental air barriers for a variety of industrial process applications. For special applications Canadian Air Systems offer high volume and high penetration tangential air curtains with highly laminar airflows.

For additional information please refer to http:www.nis-coaircurtainIndex.

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TOKYO Mike Trout Angels Jersey , March 10 (Xinhua) -- Japanese Prime Minister Shinzo Abe on Thursday pledged to boost the number of foreign visitors to the disaster-hit region of Tohoku in the nation's northeast which was devastated by an earthquake-triggered tsunami five years ago, while maintaining that safety remained a priority for the controversial restarting of the nation's idled nuclear reactors from here on.


Speaking on the eve of the fifth anniversary of the Great East Japan earthquake, which struck east of the Oshika Peninsula of the Tohoku region of the country on March 11, 2011, and Martin Maldonado Angels Jersey , together with an ensuing tsunami, killed nearly 16,000 people, injured more than 6,000 and left some 2 Kole Calhoun Angels Jersey ,500 still unaccounted for, Abe told a press conference that his government will work towards tripling the numbers of tourists visiting the embattled region.


The prime minister said that part of the 2019 Rugby World Cup slated to be held in the Tohoku region ahead of Tokyo hosting the 2020 Summer Olympic and Paralympic Games, would contribute to the numbers of foreigners visiting the region. He said that while tourism in Japan had seen a significant uptick since his time in office, the Tohoku region was significantly lagging behind, having only just recovered to pre-disaster levels last year.


According to the latest reports Justin Upton Angels Jersey , however, many parts of the northeast are still reeling in the wake of the multiple disasters, which also include Fukushima Prefecture and the ongoing nuclear crisis there, initially sparked by the massive earthquake-triggered tsunami knocking out the key cooling functions at the Daiichi nuclear power complex leading to multiple core meltdown in its reactors, resulting in the worst commercial nuclear disaster in history. Abe said his government will work towards creating much needed revenue for the battered region Huston Street Angels Jersey , including Fukushima, by upping visits by travelers three-fold to 1.5 million by 2020.


Abe maintained that the reconstruction of the disaster-hit regions has been a ""painful, day-to-day"" process over the past five years that has proceeded ""step by step,"" but noted that he believed that progress has been made. He added that the next five years would be a ""reconstruction creation period"" that would see more financial resources made available to help the affected areas return to normalcy.


Concerns have been voiced, however Garrett Richards Angels Jersey , by officials from within the Tohoku region, that spans some of the worst-hit prefectures in Japan's northeast, including Fukushima, Miyagi and Iwate Prefectures, that vital funds earmarked for essential revi. Wholesale Authentic Jerseys Wholesale Jerseys Online Wholesale Jerseys China Cheap NCAA Jerseys Cheap NBA Jerseys China Wholesale Soccer Jerseys Free Shipping Wholesale Hockey Jerseys China Free Shipping Wholesale Football Jerseys From China Wholesale NCAA Jerseys China Cheap Basketball Jerseys

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