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Liquid Hydrogen Trailer
A liquid-hydrogen trailer is a trailer designed to carry cryogenic liquid hydrogen (LH2) on roads being pulled by a powered vehicle. The largest such vehicles are similar to railroad tanktainers which are also designed to carry liquefied loads. Liquid-hydrogen trailers tend to be large; they are insulated. Some are semi-trailers. History The U-1 semi-trailer was a liquid-hydrogen trailer designed in the 1950s to carry cryogenic liquid hydrogen (LH2) on roads being pulled by a powered vehicle. It was constructed by the Cambridge Corporation and had a capacity of with a hydrogen loss rate of approximately 2 percent per day. The U-1 was a single-axle semi-trailer. The specifications for its successor the U-2, a double axle semi-trailer, were issued on 15 March 1957. Size and volume Liquid hydrogen trailers are referenced by their size or volume capacity. Liquid-hydrogen trailers typically have capacities ranging from gross volume. See also * Compressed-hydrogen tube t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Semi-trailer
A semi-trailer is a trailer (vehicle), trailer without a front axle. The combination of a semi-trailer and a tractor truck is called a ''semi-trailer truck'' (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United States). A large proportion of a semi-trailer's weight is supported by a tractor unit, or a detachable front-axle assembly known as a dolly (trailer), dolly, or the B-Train, tail of another trailer. The semi-trailer's weight is semi-supported (half-supported) by its own wheels, at the rear of the semi-trailer. A semi-trailer is normally equipped with landing gear (legs which can be lowered) to support it when it is uncoupled. Many semi-trailers have wheels that are capable of being totally dismounted and are also relocatable (repositionable) to better distribute load to bearing wheel weight factors. Semi-trailers are more popular for transport than Trailer (vehicle)#Full, full trailers, which have both front and rear axles. Ease of backing i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Axle
An axle or axletree is a central shaft for a rotation, rotating wheel and axle, wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing (mechanical), bearings or Bushing (bearing), bushings are provided at the mounting points where the axle is supported. In the latter case, a bearing or bushing sits inside a central hole in the wheel to allow the wheel or gear to rotate around the axle. Sometimes, especially on bicycles, the latter type of axle is referred to as a ''spindle (tool), spindle''. Terminology On cars and trucks, several senses of the word ''axle'' occur in casual usage, referring to the shaft itself, its housing, or simply any transverse pair of wheels. Strictly speaking, a shaft that rotates with the wheel, being either Bolt (fastener), bolted or rotating spline, splined in fixed relation to it, is called an ''axle'' or ''axle shaft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Trailers
Trailer may refer to: Transportation * Trailer (vehicle), an unpowered vehicle pulled by a powered vehicle ** Baggage trailer, a large flatbed baggage trolley ** Bicycle trailer, a wheeled frame for hitching to a bicycle to tow cargo or passengers ** Boat trailer to carry small boats ** Horse trailer and other trailers designed to haul livestock ** Semi-trailer, a trailer without a front axle ** Travel trailer, or caravan, a type of recreational trailer designed to provide sleeping space * Semi-trailer truck, the combination of a tractor unit and one or more semi-trailers Shelter * Mobile home, a relocatable housing unit with wheels and a hitch. * Portable classroom, a temporary classroom for schools with insufficient building capacity - not technically a trailer due to lack of wheels or hitch. This temporary shelter can be relocated with a trailer, but by definition, the structure itself is not a trailer. * Construction trailer, relocatable temporary accommodation with wheels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Trailer (vehicle)
A trailer is an unpowered vehicle Towing, towed by a powered vehicle. It is commonly used for the transport of goods and materials. There are two general categories of trailers: the full trailer and the semitrailer. A full trailer is a type of trailer whose entire weight is supported by its own wheels, with no weight transferred to the towing vehicle. In contrast, a semi-trailer is designed so that a portion of its weight is carried by its own wheels, while the remaining weight is borne by the towing vehicle. Sometimes recreational vehicles, travel trailers, or mobile homes with limited living facilities where people can camp or stay have been referred to as trailers. In earlier days, many such vehicles were towable trailers. Trailers have been used for thousands of years, predating the invention of the automobile. Before the advent of the wheel, early humans employed the concept of trailering by using drag sleds to transport goods. While the two wheel war chariot is one of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Liquid-hydrogen Tanktainer
A liquid hydrogen tank-tainer, also known as a liquid hydrogen tank container, is a specialized type of container designed to carry cryogenic liquid hydrogen (LH2) on standard intermodal equipment. The tank is held within a box-shaped frame the same size and shape as a container. Size and volume Liquid hydrogen tanktainers are referenced by their size or volume capacity, generally an ISO container. See also * Compressed hydrogen tube trailer * Containerization * Hydrogen economy * Hydrogen infrastructure * Liquid hydrogen tank car * Liquid hydrogen trailer * Tank chassis * Tank container A tank container or tanktainer is an intermodal container for the transport of liquids, gases and powders as bulk cargo. It is built to the ISO standards, making it suitable for different modes of transportation; as such, it is also called an ISO ... References {{HydrogenDelivery Hydrogen infrastructure Industrial gases Cryogenics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Liquid-hydrogen Tank Car
A liquid hydrogen tank car, also called liquid hydrogen tank wagon or liquid hydrogen tanker wagon, is a railroad tank car designed to carry cryogenic liquid hydrogen (LH2). LH2 tank cars with a capacity of are used for transcontinental transport. Design The pressure within the tank is or lower with a temperature below 20.27 K () and a boil-off rate of 0.3% to 0.6% per day The tank is double walled like a vacuum flask with multi-layer insulation, with the valves and fittings enclosed in a cabinet at the lower side or end of the car. Classes Cryogenic liquid tank cars in the US are classified as follows: * DOT-113 tank cars (Cryogenic liquid tank cars) * AAR-204W tank cars (Cryogenic liquid tank cars) * AAR-204XT (Inside boxcar) See also * Association of American Railroads (AAR) * Compressed hydrogen tube trailer * Hydra (''Starlight Express'' character) *Hydrogen economy *Hydrogen infrastructure * Liquid hydrogen tanktainer * Liquid hydrogen trailer * United States Departmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hydrogen Infrastructure
A hydrogen infrastructure is the infrastructure of points of hydrogen production, truck and pipeline transport, and hydrogen stations for the distribution and sale of hydrogen fuel, and thus a crucial prerequisite before a successful commercialization of fuel cell technology. Hydrogen stations which are not situated near a hydrogen pipeline get supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen trailers, liquid hydrogen tank trucks or dedicated onsite production. Pipelines are the cheapest way to move hydrogen over long distances compared to other options. Hydrogen gas piping is routine in large oil-refineries, because hydrogen is used to hydrocrack fuels from crude oil. The IEA recommends existing industrial ports be used for production and natural gas pipelines for transport, international co-operation and shipping. South Korea and Japan, which as of 2019 lack international electrical interconnectors, are investing in the hydrogen economy. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hydrogen Economy
The hydrogen economy is an umbrella term for the roles hydrogen can play alongside low-carbon electricity to reduce emissions of greenhouse gases. The aim is to reduce emissions where cheaper and more energy-efficient clean solutions are not available. In this context, ''hydrogen economy'' encompasses the production of hydrogen and the use of hydrogen in ways that contribute to phasing-out fossil fuels and limiting climate change. Hydrogen can be produced by several means. Most hydrogen produced today is ''gray hydrogen'', made from natural gas through steam methane reforming (SMR). This process accounted for 1.8% of global greenhouse gas emissions in 2021.Greenhouse gas emissions totalled 49.3 Gigatonnes CO2e in 2021. ''Low-carbon hydrogen'', which is made using SMR with carbon capture and storage ('' blue hydrogen''), or through electrolysis of water using renewable power ('' green hydrogen''), accounted for less than 1% of production. Virtually all of the 100 million tonnes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Compressed-hydrogen Tube Trailer
Hydrogen tube trailers are semi-trailers that consist of 4 to 36 cluster high-pressure hydrogen tanks varying in length from for small tubes to on jumbo tube trailers. They are part of the hydrogen highway and usually precede a local hydrogen station. Types Modular tube trailer Older tube trailers made of steel (Type I) usually carry about per load, while new and more efficient composite trailers (Type IV) made of carbon fiber make it possible to carry up to per load. Modular tube trailers range from 8 to 54 tubes. Intermediate trailer Intermediate tubes are assembled in banks of 5 tubes in lengths of and provide mobile or stationary storage. Jumbo tube trailer A trailer with 10 tubes and a chassis, operating with pressures in excess of . Composite tube trailers As of 2012, the US Department of Transportation (DOT) started to award Special Permits (SP) to different manufactures to produce Type IV Hydrogen trailers in the US. The US is the current leader in Composite tank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hydrogen
Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter. Under standard conditions, hydrogen is a gas of diatomic molecules with the chemical formula, formula , called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen is colorless, odorless, non-toxic, and highly combustible. Stars, including the Sun, mainly consist of hydrogen in a plasma state, while on Earth, hydrogen is found as the gas (dihydrogen) and in molecular forms, such as in water and organic compounds. The most common isotope of hydrogen (H) consists of one proton, one electron, and no neutrons. Hydrogen gas was first produced artificially in the 17th century by the reaction of acids with metals. Henry Cavendish, in 1766–1781, identified hydrogen gas as a distinct substance and discovere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Cryogenic
In physics, cryogenics is the production and behaviour of materials at very low temperatures. The 13th International Institute of Refrigeration's (IIR) International Congress of Refrigeration (held in Washington, DC in 1971) endorsed a universal definition of "cryogenics" and "cryogenic" by accepting a threshold of to distinguish these terms from conventional refrigeration. This is a logical dividing line, since the normal boiling points of the so-called permanent gases (such as helium, hydrogen, neon, nitrogen, oxygen, and normal air) lie below 120 K, while the Freon refrigerants, hydrocarbons, and other common refrigerants have boiling points above 120 K. Discovery of superconducting materials with critical temperatures significantly above the boiling point of nitrogen has provided new interest in reliable, low-cost methods of producing high-temperature cryogenic refrigeration. The term "high temperature cryogenic" describes temperatures ranging from above the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Tractor Unit
A tractor unit, also known as a truck unit, lorry unit, power unit, prime mover, ten-wheeler, semi-tractor, semi-truck, semi-lorry, tractor cab, truck cab, lorry cab, big rig tractor, big rig truck or big rig lorry or simply a tractor, truck, lorry, semi, big rig or rig, is a characteristically heavy-duty towing engine that provides motive power for hauling a towed or trailered load. The largest such vehicles are similar to locomotives. These fall into two categories: heavy- and medium-duty military and commercial rear-wheel-drive semi-tractors used for hauling semi-trailers, and very heavy-duty typically off-road-capable, often 6×6, military and commercial tractor units, including ballast tractors. It should not be confused with a tractor-trailer which is a combination of a tractor unit and semi-trailer, whereas a ''tractor unit'' describes only the tractor portion. Overview Tractor units typically have large-displacement diesel engines for power, durability, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
