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Ionic Liquid Piston Compressor
An ionic liquid piston compressor, ionic compressor or ionic liquid piston pump is a hydrogen compressor based on an ionic liquid piston instead of a metal piston as in a piston-metal diaphragm compressor. Principle An ionic liquid compressor takes advantage of two properties of ionic liquids—their virtually non-measurable vapor pressures and large temperature window for the liquid phase—in combination with the low solubility of some gases (e.g. hydrogen) in them. This insolubility is exploited by using the body of an ionic liquid to compress hydrogen up to 1000bar (14,500psi) in hydrogen filling stations. Linde's ionic liquid compressor reduced the number of moving parts from about 500 in a conventional reciprocating compressor down to 8. Many seals and bearings were removed in the design as the ionic liquid does not mix with the gas. Service life is about 10 times longer than a regular reciprocating compressor with reduced maintenance during use, energy costs are reduce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston Compressor
A reciprocating compressor or piston compressor is a Gas compressor, positive-displacement compressor that uses pistons driven by a crankshaft to deliver gases at high pressure. Pressures of up to 5,000 PSIG are commonly produced by multistage reciprocating compressors. The intake gas enters the suction manifold, then flows into the compression cylinder where it gets compressed by a piston driven in a reciprocating motion via a crankshaft, and is then discharged. Applications include Oil refinery, oil refineries, pipeline transport, gas pipelines, oil and gas production drilling and well services, air and nitrogen injection, offshore platforms, chemical plants, natural gas processing plants, air conditioning, and refrigeration plants. One specialty application is the blowing of plastic bottles made of Polyethylene Terephthalate, polyethylene terephthalate (PET). In the ionic liquid piston compressor many Seal (mechanical), seals and bearings were removed in the design as the io ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Ring Pump
A liquid-ring pump is a rotating positive-displacement gas pump, with liquid under centrifugal force acting as a seal. They are typically used as a vacuum pump, but can also be used as a gas compressor. The function of a liquid-ring pump is similar to a rotary vane pump, with the difference being that the vanes are an integral part of the rotor and churn a rotating ring of liquid to form the compression-chamber seal. They are an inherently low-friction design, with the rotor being the only moving part. Sliding friction is limited to the shaft seals. Liquid-ring pumps are typically powered by an induction motor. Description of operation The liquid-ring pump compresses gas by rotating a vaned impeller located eccentrically within a cylindrical casing. Liquid (usually water) is fed into the pump and, by centrifugal acceleration, forms a moving cylindrical ring against the inside of the casing. This liquid ring creates a series of seals in the space between the impeller vanes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Hydrogen Technologies
This is a timeline of the history of hydrogen technology. Timeline 16th century * c. 1520 – First recorded observation of hydrogen by Paracelsus through dissolution of metals (iron, zinc, and tin) in sulfuric acid. 17th century * 1625 – First description of hydrogen by Johann Baptista van Helmont. First to use the word "gas". * 1650 – Turquet de Mayerne obtained a gas or "inflammable air" by the action of dilute sulphuric acid on iron. * 1662 – Boyle's law (gas law relating pressure and volume) * 1670 – Robert Boyle produced hydrogen by reacting metals with acid. * 1672 – "New Experiments touching the Relation between Flame and Air" by Robert Boyle. * 1679 – Denis Papin – safety valve * 1700 – Nicolas Lemery showed that the gas produced in the sulfuric acid/iron reaction was explosive in air 18th century * 1755 – Joseph Black confirmed that different gases exist. / Latent heat * 1766 – Henry Cavendish published in "On Factitious Airs" a description of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linear Compressor
A linear compressor is a gas compressor where the piston moves along a linear track to minimize friction and reduce energy loss during conversion of motion. This technology has been successfully used in cryogenic applications which must be oilless. Suspension spring can be flexure type or coil type. Oil-free valved linear compressor allows the use of compact heat exchangers. Linear compressors work similarly to a solenoid: by using a spring-loaded piston with an electromagnet connected to AC through a diode. The spring-loaded piston is the only moving part, and it is placed in the center of the electromagnet. During the positive cycle of the AC, the diode allows energy to pass through the electromagnet, generating a magnetic field that moves the piston backwards, compressing the spring, and generating suction. During the negative cycle of the AC, the diode blocks current flow to the electromagnet, letting the spring uncompress, moving the piston forward, and compressing the refrige ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydride Compressor
A hydride compressor is a hydrogen compressor based on metal hydrides with absorption of hydrogen at low pressure, releasing heat, and desorption of hydrogen at high pressure, absorbing heat, by raising the temperature with an external heat source like a heated waterbed or electric coil. Advantages of the hydride compressor are the high volumetric density, no moving parts, simplicity in design and operation, the possibility to consume waste heat instead of electricity and reversible absorption/desorption, disadvantages are the high cost of the metal hydride and weight. History The first applications of metal hydrides were made by NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ... to demonstrate long-term hydrogen storage for use in space propulsion. In the 1970s, automobiles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guided Rotor Compressor
The guided-rotor compressor (GRC) is a positive-displacement rotary gas compressor. The compression volume is defined by the trochoidally rotating rotor mounted on an eccentric drive shaft with a typical 80 to 85% adiabatic efficiency. History The development of the GRC started in 1990 to minimize the use of compressor valve plates and springs by using simple inlet/discharge ports. Uses The guided-rotor compressor is under research as a hydrogen compressor for hydrogen stations and hydrogen pipeline transport. See also * * * References Gas compressors Gas technologies {{engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrochemical Hydrogen Compressor
An electrochemical hydrogen compressor is a hydrogen compressor where hydrogen is supplied to the anode, and compressed hydrogen is collected at the cathode with an exergy efficiency up to and even beyond 80% for pressures up to 10,000 psi or 700 bars. Principle A multi-stage electrochemical hydrogen compressor incorporates membrane-electrode-assemblies (MEAs) separated by proton exchange membranes (PEMs) in series to reach higher pressures, when a current is passed through the MEA protons and electrons are generated at the anode. The protons are electrochemically driven across the membrane to the cathode, after which they combine with the rerouted electrons to form hydrogen, which is fed to the hydrogen compressor to be oxidized at the anode of each cell to form protons and electrons. This type of compressor has no moving parts and is compact. With electrochemical compression of hydrogen a pressure of 14500 psi (1000 bar) is achieved, this world record was set by HyET from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zemships
The project Zemships (Zero Emissions Ships) developed the FCS Alsterwasser, a 100 person hydrogen-power passenger ship, power-assisted by an electric motor that gets its electricity from a fuel cell. The first boat operates on the Alster in Hamburg since 2008. The keel laying at the SSB shipyard in Oortkaten was on 4 December 2007. Refueling The hydrogen station will be a storage tank with 17,000 liters of hydrogen for refueling. Compression is done with an ionic liquid piston compressor. {{webarchive , url=https://web.archive.org/web/20091221150406/http://www.zemships.eu/en/DateienDownload/Zemships_Newsletter_Juli_08_english.pdf , date=December 21, 2009 Specifications Boat for 100 passengers, 25.56 m long, 5.2 m wide, |
University Of Leoben
The University of Leoben (German: ''Montanuniversität Leoben'') in Austria is the country's university for mining, metallurgy and materials. It was founded on 4 November 1840 as the ''Steiermärkisch-Ständische Montanlehranstalt'' in Vordernberg, Styria, Austria's mining region. In 1849 Peter Tunner relocated the university to nearby Leoben. That year the university had a mere 48 students enrolled. The University of Leoben is a member of TU Austria, an association of three Austrian universities of technology and offers education and conducts research in the fields of mining, metallurgy and materials science. Name The university itself uses its German name ''Montanuniversität Leoben'' in their English communications, the Austrian '' Ministry of Education, Science and Research'' calls the university the ''Leoben University Mining and Metallurgy ic' in English and the ''Legal Information System of the Republic of Austria'' calls the university the ''University of Mining Leoben ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leoben University
Leoben () is a Styrian city in central Austria, located on the Mur river. With a population of about 25,000 it is a local industrial centre and hosts the University of Leoben, which specialises in mining. The Peace of Leoben, an armistice between Austria and France preliminary to the Treaty of Campo Formio, was signed in Leoben in 1797. The Justice Centre Leoben is a prison designed by architect Josef Hohensinn, which was completed in 2005. Name Leoben was attested in historical sources as ''Liupina'' in AD 904. The name is of Slavic origin, meaning 'beloved', and is derived from the root ''ljub-'' 'love'. Past and present Leoben is known as the “Gateway to the Styrian Iron Road”. The 13th-century Main Square features the Hackl House with its baroque façade in red and white. The City Parish Church, St. Francis Xavier, built in 1660, comprises a 17th-century interior and is considered one of the most significant Jesuit churches in Austria. Also of note is the Art Nou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ion Pump (physics)
An ion pump (also referred to as a sputter ion pump) is a type of vacuum pump which operates by sputtering a metal getter. Under ideal conditions, ion pumps are capable of reaching pressures as low as 10−11 mbar. An ion pump first ionizes gas within the vessel it is attached to and employs a strong electrical potential, typically 3–7 kV, which accelerates the ions into a solid electrode. Small bits of the electrode are sputtered into the chamber. Gasses are trapped by a combination of chemical reactions with the surface of the highly-reactive sputtered material, and being physically trapped underneath that material. History The first evidence for pumping from electrical discharge was found 1858 by Julius Plücker, who did early experiments on electrical discharge in vacuum tubes. In 1937, Frans Michel Penning observed some evidence of pumping in the operation of his cold cathode gauge. These early effects were comparatively slow to pump, and were therefore not commerc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Compressor
A hydrogen compressor is a device that increases the pressure of hydrogen by reducing its volume resulting in compressed hydrogen or liquid hydrogen. Traditionally, applications for hydrogen compressors included Chlorine electrolyser and many chemical applications like the production of hydrogen peroxide (HPPO). The newer applications related to green and environmentally friendly technologies include fuel cells and electrolysis for hydrogen production. Compressor vs pump Hydrogen compressors are closely related to hydrogen pumps and gas compressors: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are compressible, the compressor also reduces the volume of hydrogen gas, whereas the main result of a pump raising the pressure of a liquid is to allow the liquid hydrogen to be transported elsewhere. Types Reciprocating piston compressors A proven method to compress hydrogen is to apply reciprocating piston compressors. Widely u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
