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The magnetocaloric effect can be quantified with the following equation: = ((,)) ((,)) where is the adiabatic change in temperature of the magnetic system around temperature T, H is the applied external magnetic field, C is the heat capacity of the working magnet (refrigerant) and M is the magnetization of the refrigerant.
A miniature electromagnetic vibration energy generator was developed by a team from the University of Southampton in 2007. This particular device consists of a cantilever beam with a magnet attached to the end. The beam moves up and down as the device is subjected to vibrations from surrounding sources. [2]
Recognising the machine's potential, IBM arranged for Liebert to debut his invention at the World Computer Conference in Philadelphia. [ 1 ] [ 2 ] In 1965, Liebert founded Liebert Corporation as the first manufacturer air conditioning units with temperature and humidity controls specific for computer room applications.
EMF is defined as electromagnetic work done on a unit charge when it has traveled one round of a conductive loop. The energy could now be seen as stored in the electric field. This process uses energy from the wire with power equal to the electric potential times the total charge divided by time. Where ℰ is the voltage or EMF.
Vertiv is an American multinational provider of critical infrastructure and services for data centers, communication networks, and commercial and industrial environments. ...
One variant, the Einstein–Szilard electromagnetic refrigerator used a Einstein–Szilard electromagnetic pump to compress a working gas, pentane. [2] Although the refrigerator was not a commercial success, the Einstein–Szilard pump was later used for cooling breeder reactors , where its inherent reliability and safety were important.
Friedrich is now focused on manufacturing room air conditioners. [4] Their products include window, thru-the-wall, portable and ductless air conditioners, as well as dehumidifiers. [5] After nearly 40 years of continuous production, Friedrich replaced its long-running QuietMaster line with the professional-grade Kühl series in 2010.
The VideoNow is a portable video player produced by Hasbro and released by their subsidiary Tiger Electronics in 2003 as part of Tiger's line of Now consumer products. The systems use discs called PVDs (which stands for Personal Video Disc), which can store about 30 minutes of video, [3] the length of an average TV show with commercials (a typical TV episode is about 20–23 minutes without ...