refrigeration losses

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• Refrigeration magnetique — Réfrigération magnétique La réfrigération magnétique repose sur la propriété physique de certains matériaux magnétiques qui voient leur température intrinsèque s élever lorsqu’ils sont soumis à un champ magnétique. Ce phénomène dénommé effet… …   Wikipédia en Français

• Réfrigération magnétique — La réfrigération magnétique repose sur la propriété physique de certains matériaux magnétiques qui voient leur température intrinsèque s élever lorsqu’ils sont soumis à un champ magnétique. Ce phénomène dénommé effet magnétocalorique (EMC) est… …   Wikipédia en Français

• Superconducting magnetic energy storage — (SMES) systems store energy in the magnetic field created by the flow of direct current in a superconducting coil which has been cryogenically cooled to a temperature below its superconducting critical temperature. A typical SMES system includes… …   Wikipedia

• Superconducting Radio Frequency — (SRF) science and technology involves the application of electrical superconductors to radio frequency devices. The ultra low electrical loss of the superconductor yields RF resonators with extremely high quality factors, or Q . For example, it… …   Wikipedia

• food preservation — Any method by which food is protected against spoilage by oxidation, bacteria, molds, and microorganisms. Traditional methods include dehydration, smoking, salting, controlled fermentation (including pickling), and candying; certain spices have… …   Universalium

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

• vegetable processing — Introduction       preparation of vegetables (vegetable) for use by humans as food.       Vegetables consist of a large group of plants consumed as food. Perishable when fresh but able to be preserved by a number of processing methods, they are… …   Universalium

• Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …   Wikipedia

• Centrifugal compressor — Centrifugal compressors, sometimes termed radial compressors, are a sub class of dynamic axisymmetric work absorbing turbomachinery.[1] Centrifugal impeller with a highly polished surface likely to improve performance …   Wikipedia

• Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… …   Wikipedia