Bukit Batok MRT station is an above-ground Mass Rapid Transit (MRT) station on the North South line in Bukit Batok , Singapore. Until the opening of the Woodlands Extension , the station was part of the Branch line . Bukit Batok station is situated within the town centre of Bukit Batok New Town, next to Bukit Batok Bus Interchange . During planning stages, the station was called "Bukit Batok South".
21-401: NS2 may refer to: Transportation [ edit ] Bukit Batok MRT station (station code: NS2 ), Singapore Kinunobebashi Station (station code: NS02 ), Kawanishi, Hyōgo Prefecture, Japan Tetsudō-Hakubutsukan Station (station code: NS02 ), Ōmiya-ku, Saitama, Japan RAF N.S. 2, a British NS class airship New Shepard 2 ,
42-632: A Blue Origin reusable space launch vehicle booster rocket (booster #2) Blue Origin NS-2, a 2015 November 23 Blue Origin suborbital spaceflight mission for the New Shepard Software [ edit ] ns (simulator) , version ns-2 , computer network simulation software Natural Selection 2 , a video game Netscape Navigator 2 , a webbrowser Other uses [ edit ] Antigonish (provincial electoral district) , constituency N.S. 02 ; Nova Scotia, Canada Nord Stream 2 ,
63-475: A controversial extension to the Nord Stream gas pipeline between Russia and Germany Novelty seeking level 2, impulsiveness NS2 (HCV) , a viral protein in the hepatitis C virus See also [ edit ] [REDACTED] Search for "ns2" or "ns-2" on Misplaced Pages. NSS (disambiguation) NS (disambiguation) 2 (disambiguation) [REDACTED] Topics referred to by
84-430: A higher floor jet. Smaller high-speed fans of equivalent displacement are incapable of producing the same effect. The power to drive a fan increases roughly with the cube of the average air speed through the fan. A commercial fan delivering air at 20 miles per hour (mph) requires about 64 times as much power as a similar sized fan delivering air at five mph. Airspeed, combined with fan "effectiveness," means that when
105-467: A method to determine the thrust developed and used a simple equation to convert the measured thrust to airflow. During the periodic review process, it was determined that the calculated airflow was too high; therefore this version no longer artificially calculates airflow, but leaves the measured performance in units of thrust. The current version, AMCA 230–12, reintroduced airflow rate with a revised equation, and new efficiency metrics. The official scope of
126-499: A small one due to the friction between moving air and stationary air, which occurs at the periphery of the moving column. The perimeter of an air column varies directly with column diameter. While the cross-sectional area varies with the square of the diameter, the large column has proportionately fewer peripheries, and therefore less drag . The air column from a 3-foot-diameter (0.91 m) fan, therefore, has more than six times as much friction interface per volume of air moved as does
147-419: Is because normally under conditions with air temperatures above about 74 °F (23.3 ° C), the body needs to lose heat in order to maintain a constant internal temperature. Unlike air conditioners, which cool rooms, fans cool people. Ceiling fans increase air speed at the occupant level, which facilitates more efficient heat rejection, cooling the occupant, rather than the space. Elevated air speed increases
168-579: Is different from Wikidata All article disambiguation pages All disambiguation pages Bukit Batok MRT station The station was opened on 10 March 1990 as part of the Branch line , and was given the station number B1. When the Woodlands Extension opened in 1996, the station number was changed to N23, and continued to use it until it adopted its current station number NS2 in 2001. Installation of half-height screen doors at
189-514: Is situated within the town centre of Bukit Batok New Town, next to Bukit Batok Bus Interchange . This Singapore MRT -related article is a stub . You can help Misplaced Pages by expanding it . High-volume low-speed fan A high-volume low-speed ( HVLS ) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence
210-423: The air column from a 20-foot-diameter (6.1 m) fan. When the down column of air from an HVLS fan reaches the floor, the air turns in the horizontal direction away from the column in all directions. The air flowing outward is called the "horizontal floor jet." Since the height of the floor jet is determined by the diameter of the column of air, a larger diameter fan naturally produces a larger air column and thus
231-501: The floor or a cow, its initial development purpose. Commercial HVLS fans differ from residential ceiling fans with regard to diameter, rotational speed, and performance. While some fans use contemporary blades to move air, other methods are being used to make it more efficient such as using airfoils . Larger diameter fans can move more air than smaller fans at the same speed. A turbulent, high velocity air jet dissipates very quickly. A large column of air, however, "travels" farther than
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#1732800913501252-484: The late 1990s, William Fairbank, a professor at the University of California at Riverside, and Walter K. Boyd, founder of MacroAir Technologies, invented and patented a new type of circulator fan, first called a High-Volume, Large-Diameter (HVLD) fan. This type of fan was originally developed for agricultural applications, so early research focused on the benefits of HVLS fans on dairy production. HVLS fans work on
273-455: The name "high volume, low speed." Typical applications for HVLS fans fall into two classifications—industrial and commercial. In industrial applications, HVACR is often cost prohibitive or impractical, and is usually only used for refrigerated warehouses or the manufacture of refrigerated or frozen foods. Fans installed in spaces like warehouses , barns , hangars and distribution centers can prevent heat stress, increase worker comfort and
294-496: The objective is to cool people or animals, very large, low-speed commercial fans are more efficient and effective than small high-speed fans. In general, Air Movement and Control Association Standard 230 sets uniform testing procedures for determining ceiling fan performance. AMCA 230 establishes uniform methods of laboratory testing for air circulating fans in order to determine performance in terms of thrust for rating, certification or guarantee purposes. The 1999 version described
315-399: The principle that cool moving air breaks up the moisture-saturated boundary layer surrounding the body and accelerates evaporation to produce a cooling effect. Ceiling fans produce a column of air as they turn. This column of air moves down and out along the floor. Called a horizontal floor jet, this deep wall of horizontal moving air is relative to the diameter of a fan, and to a lesser degree,
336-405: The productivity of both workers and livestock. HVLS fans are also used in commercial spaces, where air conditioning is more common, but increased air movement from ceiling fans can cost-effectively augment occupant comfort or prevent stratification. Typical commercial applications include shopping malls , churches , office buildings , airport terminal buildings, fitness centers and schools . In
357-401: The rate of convective and evaporative heat loss from the body, thus making the occupant feel cooler without changing the dry bulb temperature of the air. Hot air is less dense than cold air, which causes hot air to naturally rise to the ceiling level through a process called convection. In still air, layers of constant temperature form, the coldest at the bottom and the warmest at the top. This
378-448: The same term This disambiguation page lists articles associated with the same title formed as a letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=NS2&oldid=1174707485 " Category : Letter–number combination disambiguation pages Hidden categories: Short description
399-402: The speed of a fan. Once the floor jet reaches its potential, it migrates outward until it meets a side wall or other vertical surface. Under ideal conditions, an 8-foot-diameter (2.4 m) fan produces a floor jet of air approximately 36 inches (910 mm) deep. A 24-foot-diameter (7.3 m) fan produces a floor jet 108 inches (2,700 mm) deep, tall enough to engulf a human standing on
420-410: The standard was limited to ceiling fans under 6 feet (1.8 m) in diameter. Therefore, the current standard does not apply to HVLS fans. A new version of the standard is currently under review. Air movement can have a significant influence on human thermal comfort. Wind chill in cold conditions is considered detrimental, but air movement in neutral to warm environments is considered beneficial. This
441-534: The station started on 29 June 2010 and commenced on 31 August 2010 as part of the Land Transport Authority 's (LTA) programme to improve safety in MRT stations. In 2012, high-volume low-speed fans were installed at this station to improve ventilation at the elevated station's platforms. Bukit Batok MRT station has an MRT code of “NS2”, adjacent to Jurong East and Bukit Gombak MRT stations . It
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