1.
HVAC
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Heating, ventilation and air conditioning is the technology of indoor and vehicular environmental comfort. Its goal is to provide comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, Refrigeration is sometimes added to the fields abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, ventilation includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings, methods for ventilating a building may be divided into mechanical/forced and natural types. HVAC systems can be used in domestic and commercial environments. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces, the means of air delivery and removal from spaces is known as room air distribution. In modern buildings the design, installation, and control systems of functions are integrated into one or more HVAC systems. For very small buildings, contractors normally estimate the capacity, engineer, for larger buildings, building service designers, mechanical engineers, or building services engineers analyze, design, and specify the HVAC systems. Specialty mechanical contractors then fabricate and commission the systems, Building permits and code-compliance inspections of the installations are normally required for all sizes of building. HVAC is based on inventions and discoveries made by Nikolay Lvov, Michael Faraday, Willis Carrier, Edwin Ruud, Reuben Trane, James Joule, William Rankine, Sadi Carnot, heaters are appliances whose purpose is to generate heat for the building. This can be done via central heating, such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building. The heat can be transferred by convection, conduction, or radiation, heaters exist for various types of fuel, including solid fuels, liquids, and gases. Another type of source is electricity, normally heating ribbons composed of high resistance wire. This principle is used for baseboard heaters and portable heaters. Electrical heaters are used as backup or supplemental heat for heat pump systems. The heat pump gained popularity in the 1950s in Japan and the United States, heat pumps can extract heat from various sources, such as environmental air, exhaust air from a building, or from the ground. In the case of heated water or steam, piping is used to transport the heat to the rooms, most modern hot water boiler heating systems have a circulator, which is a pump, to move hot water through the distribution system
2.
Bogie
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A bogie is a chassis or framework carrying wheels, attached to a vehicle, thus serving as a modular subassembly of wheels and axles. Bogies take various forms in various modes of transport, while bogie is the preferred spelling and first-listed variant in various dictionaries, bogey and bogy are also used. A bogie in the UK, or a truck, wheel truck. In Indian English, bogie may also refer to a railway carriage. In South Africa, the bogie is often alternatively used to refer to a freight or goods wagon. The first standard gauge British railway to build coaches with bogies, an alternate configuration often is used in articulated vehicles, which places the bogies under the connection between the carriages or wagons. Most bogies have two axles, but some cars designed for heavy loads have more axles per bogie, heavy-duty cars may have more than two bogies using span bolsters to equalize the load and connect the bogies to the cars. Suspension to absorb shocks between the frame and the rail vehicle body, Common types are coil springs, or rubber airbags. At least one wheelset, composed of an axle with bearings and a wheel at each end The bolster, the railway car is supported at the pivot point on the bolster. Axle box suspensions absorb shocks between the bearings and the bogie frame. The axle box suspension usually consists of a spring between the frame and axle bearings to permit up-and-down movement, and sliders to prevent lateral movement. A more modern design uses solid rubber springs, brake equipment, Two main types are used, brake shoes that are pressed against the tread of the wheel, and disc brakes and pads. More modern, bolsterless bogie designs omit these features, instead taking advantage of the movement of the suspension to permit rotational movement. The Commonwealth bogie, manufactured by the English Steel Corporation under licence from the Commonwealth Steel Company in Illinois, fitted with SKF or Timken bearings, it was introduced in the late 1950s for all BR Mark 1 vehicles. It was a heavy, cast-steel design weighing about 6.5 long tons, with sealed roller bearings on the axle ends, the leaf springs were replaced by coil springs running vertically rather than horizontally. The advanced design gave a better quality than the BR1. The side frame of the bogie was usually of bar construction, with simple horn guides attached, the axle boxes had a cast-steel equaliser beam or bar resting on them. The bar had two steel coil springs placed on it and the bogie frame rested on the springs, the effect was to allow the bar to act as a compensating lever between the two axles and to use both springs to soften shocks from either axle
3.
Railway brake
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Brakes are used on the cars of railway trains to enable deceleration, control acceleration or to keep them standing when parked. Clasp brakes are one type of historically used on trains. In the earliest days of railways, braking technology was primitive, some railways fitted a special deep-noted brake whistle to locomotives to indicate to the porters the necessity to apply the brakes. All the brakes at this stage of development were applied by operation of a screw and linkage to brake blocks applied to wheel treads, and it was also unreliable, as the application of brakes by guards depended upon them hearing and responding quickly to a whistle for brakes. This had become apparent from the trials on railway brakes carried out at Newark in the previous year, the chief types of solution were, The chain brake, such as the Heberlein brake, in which a chain was connected continuously along the train. As with car brakes, actuating pressure to apply brakes was transmitted hydraulically and these found some favor in the UK, but even in the UK problems were found with the water used as brake fluid freezing The Westinghouse air brake system. The Westinghouse system uses smaller air reservoirs and brake cylinders than the vacuum equipment. An ejector on the created a vacuum in a continuous pipe along the train. This system was very cheap and effective, but it had the weakness that it became inoperative if the train became divided or if the train pipe was ruptured. This system was similar to the vacuum system, except that the creation of vacuum in the train pipe exhausted vacuum reservoirs on every vehicle. If the driver applied the brake, his drivers brake valve admitted atmospheric air to the pipe. Being an automatic brake, this system applies braking effort if the train divided or if the train pipe is ruptured. Its disadvantage is that the vacuum reservoirs were required on every vehicle, and their bulk. Note, there are a number of variants and developments of all these systems, the Newark trials showed the braking performance of the Westinghouse air-brakes to be distinctly superior but for other reasons it was the vacuum system that was generally adopted on UK railways. Goods and mineral vehicles were provided with hand brakes by which the brakes could be applied by a lever operated by staff on the ground. Early goods vehicles had brake handles on one side only and random alignment of the vehicles gave the guard sufficient braking but, from about 1930 and these trains, not fitted with continuous brakes were described as unfitted trains and they survived in British practice until about 1985. By 1952 only 14% of open wagons, 55% of covered, in the early days of diesel locomotives, a purpose-built brake tender was attached to the locomotive to increase braking effort when hauling unfitted trains. The brake tender was low, so that the driver could see the line and signals ahead if the brake tender was propelled ahead of the locomotive
4.
Track gauge
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In rail transport, track gauge is the spacing of the rails on a railway track and is measured between the inner faces of the load-bearing rails. All vehicles on a network must have running gear that is compatible with the track gauge, as the dominant parameter determining interoperability, it is still frequently used as a descriptor of a route or network. There is a distinction between the gauge and actual gauge at some locality, due to divergence of track components from the nominal. Railway engineers use a device, like a caliper, to measure the actual gauge, the nominal track gauge is the distance between the inner faces of the rails. In current practice, it is specified at a distance below the rail head as the inner faces of the rail head are not necessarily vertical. In some cases in the earliest days of railways, the company saw itself as an infrastructure provider only. Colloquially the wagons might be referred to as four-foot gauge wagons, say and this nominal value does not equate to the flange spacing, as some freedom is allowed for. An infrastructure manager might specify new or replacement track components at a variation from the nominal gauge for pragmatic reasons. Track is defined in old Imperial units or in universally accepted metric units or SI units, Imperial units were established in United Kingdom by The Weights and Measures Act of 1824. In addition, there are constraints, such as the load-carrying capacity of axles. Narrow gauge railways usually cost less to build because they are lighter in construction, using smaller cars and locomotives, as well as smaller bridges, smaller tunnels. Narrow gauge is often used in mountainous terrain, where the savings in civil engineering work can be substantial. Broader gauge railways are generally expensive to build and require wider curves. There is no single perfect gauge, because different environments and economic considerations come into play, a narrow gauge is superior if ones main considerations are economy and tight curvature. For direct, unimpeded routes with high traffic, a broad gauge may be preferable, the Standard, Russian, and 46 gauges are designed to strike a reasonable balance between these factors. In addition to the general trade-off, another important factor is standardization, once a standard has been chosen, and equipment, infrastructure, and training calibrated to that standard, conversion becomes difficult and expensive. This also makes it easier to adopt an existing standard than to invent a new one and this is true of many technologies, including railroad gauges. The reduced cost, greater efficiency, and greater economic opportunity offered by the use of a common standard explains why a number of gauges predominate worldwide
5.
3 ft 6 in gauge railways
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Railways with a track gauge of 3 ft 6 in/1,067 mm were first constructed as horse-drawn wagonways. From the mid-nineteenth century, the 3 ft 6 in gauge became widespread in the British Empire, there are approximately 112,000 kilometres of 1,067 mm gauge track in the world. 1795 One of the first railways to use 3 ft 6 in gauge was the Little Eaton Gangway in England, other 3 ft 6 in gauge wagonways in England and Wales were also built in the early nineteenth century. 1862 In 1862 the Norwegian engineer Carl Abraham Pihl constructed the first 3 ft 6 in gauge railway in Norway,1865 In 1865 the Queensland Railways were constructed. Its 3 ft 6 in gauge was promoted by the Irish engineer Abraham Fitzgibbon,1868 In 1868 Charles Fox asks civil engineer Edmund Wragge to survey a 3 ft 6 in railway in Costa Rica. 1871 In 1871 the Canadian Toronto, Grey and Bruce Railway,1872 In January 1872 Robert Fairlie advocated the use of 3 ft 6 in gauge in his book Railways Or No Railways, Narrow Gauge, Economy with Efficiency v. Broad Gauge, Costliness with Extravagance. 1872 also saw the opening of the first 3 ft 6 in gauge railway in Japan,1873 On 1 January 1873, the first 3 ft 6 in gauge railway was opened in New Zealand, constructed by the British firm John Brogden and Sons. Earlier built 4 ft 8 1⁄2 in and broad gauge railways were converted to the narrower gauge. Also in 1873 the Cape Colony adopted the 3 ft 6 in gauge, after conducting several studies in southern Europe, the Molteno Government selected the gauge as being the most economically suited for traversing steep mountain ranges. Beginning in 1873, under supervision of Railway engineer of the Colony William Brounger, the Cape Government Railways rapidly expanded and the gauge became the standard for southern Africa. 1876 Natal also converted its short 10 kilometres long Durban network from 4 ft 8 1⁄2 in broad gauge prior to commencing with construction of a network across the colony in 1876. Other new railways in Southern Africa, notably Mozambique, Bechuanaland, after 1876 In the late nineteenth and early twentieth century numerous 3 ft 6 in gauge tram systems were built in the United Kingdom and the Netherlands. In Sweden, the gauge was nicknamed Blekinge gauge, as most of the railways in the province of Blekinge had this gauge. An alternate name for this gauge, Cape gauge, is named after the Cape Colony in what is now South Africa, the term Cape Gauge is used in other languages, such as the Dutch kaapspoor, German Kapspur, Norwegian kappspor and French voie cape. After metrication in the 1960s, the gauge was referred to in official South African Railways publications as 1065 mm instead of 1067 mm, the gauge is sometimes referred to as CAP gauge, after C. A. The gauge name Colonial Gauge was used in New Zealand, in Australia the imperial term 3 foot 6 inch is used. In some Australian publications the term medium gauge is also used, in Japan 1,067 mm gauge is referred to as kyōki, which directly translates as narrow gauge. It is defined in metric units, Cape Government Railways Heritage railway List of track gauges Norwegian gauge controversy South African Trains – A Pictorial Encyclopaedia Why Did Japan Choose the 36 Narrow Gauge
6.
Diesel multiple unit
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A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages and they may also be referred to as a railcar or railmotor, depending on country. Diesel-powered units may be classified by their transmission type, diesel-electric. The diesel engine may be located above the frame in a bay or under the floor. Driving controls can be at both ends, on one end, or none, DMUs are usually classified by the method of transmitting motive power to their wheels. In a diesel-mechanical multiple unit the rotating energy of the engine is transmitted via a gearbox and driveshaft directly to the wheels of the train, like a car. The transmissions can be shifted manually by the driver, as in the majority of first-generation British Rail DMUs. In a diesel-hydraulic multiple unit, a torque converter, a type of fluid coupling. Some units feature a mix of hydraulic and mechanical transmissions, usually reverting to the latter at higher operating speeds as this decreases engine RPM. In a diesel-electric multiple unit a diesel engine drives a generator or an alternator which produces electrical energy. The generated current is fed to electric traction motors on the wheels or bogies in the same way as a conventional diesel electric locomotive. In modern DEMUs, such as the Bombardier Voyager family, each car is entirely self-contained and has its own engine, generator, a train composed of DMU cars scales well, as it allows extra passenger capacity to be added at the same time as motive power. It also permits passenger capacity to be matched to demand, and for trains to be split and it is not necessary to match the power available to the size and weight of the train, as each unit is capable of moving itself. As units are added, the power available to move the train increases by the necessary amount, distribution of the propulsion among the cars also results in a system that is less vulnerable to single-point-of-failure outages. Many classes of DMU are capable of operating with faulty units still in the consist, because of the self-contained nature of diesel engines, there is no need to run overhead electric lines or electrified track, which can result in lower system construction costs. Such advantages must be weighed against the noise and vibration that may be an issue with this type of train. DMUs were first introduced to Australia in the late mid-20th century for use on branch lines that could not justify a locomotive hauled service. Today, DMUs are widely used throughout Australias southern states, Adelaide Metro uses a variety of DMUs on their suburban network, NSW TrainLink use Xplorer DMUs on services from Sydney to Canberra, Griffith, Broken Hill, Armidale and Moree
7.
West Japan Railway Company
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West Japan Railway Company, also referred to as JR-West, is one of the Japan Railways Group companies and operates in western Honshu. It has its headquarters in Kita-ku, Osaka, Hokuriku Shinkansen Sanyo Shinkansen Hakata Minami Line JR-Wests highest-grossing line is the Sanyo Shinkansen high-speed rail line between Osaka and Fukuoka. The Sanyo Shinkansen alone accounts for about 40% of JR-Wests passenger revenues, the company also operates Hakata Minami Line, a short commuter line with Shinkansen trains in Fukuoka. The Urban Network is JR-Wests name for its rail lines in the Osaka-Kobe-Kyoto metropolitan area. These lines together comprise 610 km of track, have 245 stations, Urban Network stations are equipped to handle ICOCA fare cards. Train control on these lines is highly automated, and during peak hours trains run as often as two minutes. JR-Wests Urban Network competes with a number of commuter rail operators around Osaka, the Big 4 being Hankyu Railway/Hanshin Railway, Keihan Railway, Kintetsu. JR-Wests market share in the region is roughly equal to that of the Big 4 put together, largely due to its comprehensive network and those in italics are announcement names. These lines mainly handle business and leisure travel between cities and rural areas in western Japan. They account for about 20% of the companys passenger revenues, fukuchiyama Line Includes JR Takarazuka Line. Hakubi Line Hokuriku Main Line Includes Biwako Line, honshi-Bisan Line, Chayamachi — Kojima Nicknamed Seto-Ōhashi Line Kansai Main Line, Kameyama — JR Namba Includes Yamatoji Line. Kisei Main Line, Shingū — Wakayamashi Includes Kinokuni Line, sanin Main Line Includes Sagano Line. Sanyō Main Line, Kobe — Shimonoseki, Hyōgo — Wadamisaki, takayama Main Line, Inotani — Toyama Tōkaidō Main Line, Maibara — Kobe Includes Biwako Line, JR Kyoto Line, and JR Kobe Line. Initially, it was a wholly owned subsidiary of the JNR Settlement Corporation, for the first four years of its existence, JR-West leased its highest-revenue line, the Sanyō Shinkansen, from the separate Shinkansen Holding Corporation. JR-West purchased the line in October 1991 at a cost of 974.1 billion JPY in long-term payable debt, JNRSC sold 68. 3% of JR-West in an initial public offering on the Tokyo Stock Exchange in October 1996. JRTT offered all of its shares in JR-West to the public in an international IPO in 2004, JR-West is now listed on the Tokyo Stock Exchange, Nagoya Stock Exchange, Osaka Securities Exchange and the Fukuoka Stock Exchange
8.
223 series
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The 223 series is a suburban electric multiple unit train type operated by West Japan Railway Company in the Kansai Region, Chūgoku region and Shikoku of Japan. Multiple batches of the train have been built with varying differences, design of the rolling stock was an improved adaptation of the 221 series, with three pairs of doors per side per car and a transverse seating layout. Production of the train first began in 1993, the first model was delivered earlier than expected, and saw introduction into service on April 1,1994 on the Hanwa Line. Later in the year, on September 4 it began serving the Kansai Airport Line Rapid Service as Kansai International Airport opened. The train was fitted with luggage racks, for passengers travelling to/from the airport. A1 +2 seating configuration has been adopted to allow passengers to place bulky luggage on the floor where necessary, between 1996 and 1998, baggage cars were included, but due to lack of use it was reverted. Unable to cope with the passenger traffic, new cars were produced and designated as the 223-2500. These cars were introduced in 1999, the 223-0/223-2500 sees regular service on the Osaka Loop Line, Hanwa Line, and the Kisei Main Line. They are typically operated in 4+4-car formations, uncoupled at Hineno, the trains sport a higher top service speed of 130 km/h, and were manufactured jointly between Kinki Sharyo, Hitachi, and Kawasaki Heavy Industries. Fold-up seats replace some of the ones, in order to increase standing capacity during peak hours. To lower the center of gravity, air-conditioning units have shifted to the bottom of the carriages. The 223-1000 services several routes, Hokuriku Main Line, Tōkaidō Main Line, Sanyō Main Line, Kosei Line, Kusatsu Line, a total of 92 cars were produced, and they are typically in 4- or 8-car formations. In 1999, Kawasaki Heavy Industries and Kinki Sharyo received an order of 236 cars. This sub-series was built with improvements, for example universal access toilets. Its formation and assignment of routes are similar to the 223-1000 model and this sub-series was built in 2003 by Kawasaki Heavy Industries, intended to replace the aging 213 series operating on the Marine Liner services on the Seto-Ōhashi line. It can be coupled to the bilevel JR Shikoku 5000 series and it was subsequently introduced on October 1 of the same year. JR-West classifies its sets as 223-5000, while JR Shikoku classifies its sets as 5000 series,16 2-car sets were delivered in 2008, with the first sets entering service in July 2008. These sets are based at Fukuchiyama Depot, and are equipped for wanman driver-only-operation and this sub-series was created by modifying 223-2000 series sets with performance restricted to match that of 221 series sets
9.
Electric multiple unit
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An electric multiple unit or EMU is a multiple unit train consisting of self-propelled carriages, using electricity as the motive power. An EMU requires no separate locomotive, as traction motors are incorporated within one or a number of the carriages. An EMU is usually formed of two or more semi-permanently coupled carriages, but electrically powered single-unit railcars are also classed as EMUs. EMUs are popular on commuter and suburban rail networks around the world due to their fast acceleration, being quieter than DMUs and locomotive-drawn trains, EMUs can operate later at night and more frequently without disturbing residents living near the railway lines. The first EMUs were used on the elevated Liverpool Overhead Railway in 1893, the southern terminal of the railway was underground, giving the LOR the distinction of also being the first to use EMUs underground. Each carriage had a traction motor and was specifically designed and constructed to be light in weight while running on elevated steel sections. The first EMUs were two-carriage trains later graduating to three carriages, with the front and rear carriages powered, Liverpool Museum retains an example of the Liverpool Overhead Railway EMU carriage. An early proponent of EMUs was the American engineer Frank J. Sprague, the cars that form a complete EMU set can usually be separated by function into four types, power car, motor car, driving car, and trailer car. Each car can have more than one function, such as a car or power-driving car. A power car carries the equipment to draw power from the electrified infrastructure, such as pickup shoes for third rail systems and pantographs for overhead systems. Motor cars carry the traction motors to move the train, and are combined with the power car to avoid high-voltage inter-car connections. Driving cars are similar to a cab car, containing a drivers cab for controlling the train, an EMU will usually have two driving cars at its outer ends. Trailer cars are any cars that carry little or no traction or power related equipment, on third rail systems the outer vehicles usually carry the pick up shoes, with the motor vehicles receiving the current via intra-unit connections. Many modern 2-car EMU sets are set up as married pair units, while both units in a married pair are typically driving motors, the ancillary equipment are shared between the two cars in the set. Since neither car can operate without its partner, such sets are permanently coupled, advantages of married pair units include weight and cost savings over single-unit cars while allowing all cars to be powered, unlike a motor-trailer combination. Disadvantages include a loss of flexibility, as trains must be multiples of two cars, and a failure on a single car could force removing both it and its partner from service. The retired New York–Washington Metroliner service, first operated by the Pennsylvania Railroad and later by Amtrak, also featured high-speed electric multiple-unit cars, diesel multiple unit Battery electric multiple unit British electric multiple units Media related to Electric multiple unit at Wikimedia Commons
10.
ET122
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Built by Niigata Transys and based on the JR West KiHa 122 series DMU design, the fleet consists of a total of eight single-car units. The former have reversible transverse seating arranged 2+1 abreast with longitudinal seating at one end. Both types have a space at one end and a universal access toilet. A two-car resort train classified ET122-1000 and branded Setsugekka was built by Niigata Transys and this trainset entered service on 23 April 2016, operating mainly at weekends. The two special-event cars, ET122-7 and ET122-8, are finished in liveries designed by students at the Nagaoka Institute of Design, one is branded Nihonkai Stream and the other is branded 3 Cities Flowers. Test running began on the Hokuriku Main Line in December 2014, the individual build histories are as follows
