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Gustav Lorentzen (scientist)
Gustav Fredrik Lorentzen (13 January 1915 – 7 August 1995) was a Norwegian thermodynamic scientist. Gustav Lorentzen was a professor at Norwegian Institute of Technology, and Norwegian University of Science and Technology. In the late 1980s, Gustav Lorentzen rediscovered how CO2 could be used as a refrigerant in heating and cooling applications. He developed the modern thermodynamic transcritical cycle in 1988–1991. In 1988 Lorentzen designed a concept for a new, but simple and efficient way of regulating CO2 systems. This idea became the turning point in the re-invention of CO2 cooling technology. SHECCO Meanwhile, the Japanese corporation Denso had familiarized itself with Lorentzen's [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermodynamic
Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of thermodynamics which convey a quantitative description using measurable macroscopic physical quantities, but may be explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to a wide variety of topics in science and engineering, especially physical chemistry, biochemistry, chemical engineering and mechanical engineering, but also in other complex fields such as meteorology. Historically, thermodynamics developed out of a desire to increase the efficiency of early steam engines, particularly through the work of French physicist Sadi Carnot (1824) who believed that engine efficiency was the key that could help France win the Napoleonic Wars. Scots-Irish physicist Lord Kelvin was the first to formulate a co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian Institute Of Technology
The Norwegian Institute of Technology (Norwegian: ''Norges tekniske høgskole'', NTH) was a science institute in Trondheim, Norway. It was established in 1910, and existed as an independent technical university for 58 years, after which it was merged into the University of Trondheim as an independent college. In 1996 NTH ceased to exist as an organizational superstructure when the university was restructured and rebranded. The former NTH departments are now basic building blocks of the Norwegian University of Science and Technology (NTNU). NTH was primarily a polytechnic institute, educating master level engineers as well as architects. In 1992 NTH had 7627 master and doctoral students and 1591 employees; it graduated 1262 chartered engineers (master level), 52 chartered architects, and 92 Dr.Ing. (PhD). The operating budget was equivalent to US$100 M, and the total premises amounted to around 260,000 m2 (64 acres). Since the merger, it forms a part of the university campu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian University Of Science And Technology
Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in northwestern Europe *Norwegians, both a nation and an ethnic group native to Norway *Demographics of Norway *The Norwegian language, including the two official written forms: **Bokmål, literally "book language", used by 85–90% of the population of Norway **Nynorsk, literally "New Norwegian", used by 10–15% of the population of Norway *The Norwegian Sea Norwegian or may also refer to: Norwegian *Norwegian Air Shuttle, an airline, trading as Norwegian **Norwegian Long Haul, a defunct subsidiary of Norwegian Air Shuttle, flying long-haul flights *Norwegian Air Lines, a former airline, merged with Scandinavian Airlines in 1951 *Norwegian coupling, used for narrow-gauge railways *Norwegian Cruise Line, a cruise line *Norwegian Elkhound, a canine breed. *Norwegian Forest cat, a domestic feline breed *Norwegian Red, a breed of dairy cattle *Norwegian Township, Schuylkill County, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Refrigerant
A refrigerant is a working fluid used in the heat pump and refrigeration cycle, refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated due to their toxicity, flammability and the contribution of CFC and HCFC refrigerants to ozone depletion and that of HFC refrigerants to climate change. Refrigerants are used in a Direct Expansion (DX) system to transfer energy from one environment to another, typically from inside a building to outside (or vice versa) commonly known as an "air conditioner" or "heat pump". Refrigerants can carry per kg 10 times more energy than water and 50 times more than air. Refrigerants are controlled substances due to 1) High Pressures (100-145 psi), 2) Extreme temperatures (-50°C to 145°C), 3) Flammability A1 class non-flammable, A2/A2L class flammable & A3 class extremely flammable/explosive and 4) Toxicity B1-low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcritical Cycle
A transcritical cycle is a closed thermodynamic cycle where the working fluid goes through both subcritical and supercritical states. In particular, for power cycles the working fluid is kept in the liquid region during the compression phase and in vapour and/or supercritical conditions during the expansion phase. The ultrasupercritical steam Rankine cycle represents a widespread transcritical cycle in the electricity generation field from fossil fuels, where water is used as working fluid. Other typical applications of transcritical cycles to the purpose of power generation are represented by organic Rankine cycles, which are especially suitable to exploit low temperature heat sources, such as geothermal energy, heat recovery applications or waste to energy plants. With respect to subcritical cycles, the transcritical cycle exploits by definition higher pressure ratios, an feature that ultimately yields higher efficiencies for the majority of the working fluids. Considering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcritical Cycle
A transcritical cycle is a closed thermodynamic cycle where the working fluid goes through both subcritical and supercritical states. In particular, for power cycles the working fluid is kept in the liquid region during the compression phase and in vapour and/or supercritical conditions during the expansion phase. The ultrasupercritical steam Rankine cycle represents a widespread transcritical cycle in the electricity generation field from fossil fuels, where water is used as working fluid. Other typical applications of transcritical cycles to the purpose of power generation are represented by organic Rankine cycles, which are especially suitable to exploit low temperature heat sources, such as geothermal energy, heat recovery applications or waste to energy plants. With respect to subcritical cycles, the transcritical cycle exploits by definition higher pressure ratios, an feature that ultimately yields higher efficiencies for the majority of the working fluids. Considering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SINTEF
SINTEF ( no, Stiftelsen for industriell og teknisk forskning), headquartered in Trondheim, Norway, is an independent research organization founded in 1950 that conducts contract research and development projects. SINTEF has 2000 employees from 75 countries and annual revenues of three billion Norwegian kroner. SINTEF has a close partnership with Norwegian University of Science and Technology (NTNU), started in 1950 when SINTEF was founded. SINTEF has expertise in technology, medicine and the social sciences. Alexandra Bech Gjørv is the CEO of SINTEF, preceded by Unni Steinsmo, Morten Loktu and Roar Arntzen. History SINTEF was established in 1950 by the Norwegian Institute of Technology (NTH), which was later merged into the Norwegian University of Science and Technology (NTNU). It was originally intended to be an arm of NTH extended towards industry, where professors at NTH saw opportunities to build up a mission research business and used SINTEF as an instrument to do tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1915 Births
Events Below, the events of World War I have the "WWI" prefix. January * January – British physicist Sir Joseph Larmor publishes his observations on "The Influence of Local Atmospheric Cooling on Astronomical Refraction". *January 1 ** WWI: British Royal Navy battleship HMS ''Formidable'' is sunk off Lyme Regis, Dorset, England, by an Imperial German Navy U-boat, with the loss of 547 crew. ** Battle of Broken Hill: A train ambush near Broken Hill, New South Wales, Australia, is carried out by two men (claiming to be in support of the Ottoman Empire) who are killed, together with 4 civilians. * January 5 – Joseph E. Carberry sets an altitude record of , carrying Capt. Benjamin Delahauf Foulois as a passenger, in a fixed-wing aircraft. * January 12 ** The United States House of Representatives rejects a proposal to give women the right to vote. ** '' A Fool There Was'' premières in the United States, starring Theda Bara as a '' femme fatale''; she quickly become ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1995 Deaths
File:1995 Events Collage V2.png, From left, clockwise: O.J. Simpson is acquitted of the murders of Nicole Brown Simpson and Ronald Goldman from the year prior in "The Trial of the Century" in the United States; The Great Hanshin earthquake strikes Kobe, Japan, killing 5,000-6,000 people; The Unabomber Manifesto is published in several U.S. newspapers; Gravestones mark the victims of the Srebrenica massacre near the end of the Bosnian War; Windows 95 is launched by Microsoft for PC; The first exoplanet, 51 Pegasi b, is discovered; Space Shuttle Atlantis docks with the Space station Mir in a display of U.S.-Russian cooperation; The Alfred P. Murrah Federal Building in Oklahoma City is bombed by domestic terrorists, killing 168., 300x300px, thumb rect 0 0 200 200 O. J. Simpson murder case rect 200 0 400 200 Kobe earthquake rect 400 0 600 200 Unabomber Manifesto rect 0 200 300 400 Oklahoma City bombing rect 300 200 600 400 Srebrenica massacre rect 0 400 200 600 Space Shuttle Atlant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
