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Development of magnetic refrigerator for room temperature application
AIP Conference Proceedings, 2002This paper describes experimental results of a magnetic refrigerator operated at room temperature. Spheres of Gadolinium, 2.2 kg in weight and 0.3 mm in diameter, are used as a magnetic working material. The magnetic materials were divided into two vessels and reciprocated between high and zero magnetic fields. High magnetic field up to 4 T was applied
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Cryogenics, 1981
The criteria for selecting refrigerant materials for a magnetic refrigerator in the temperature range from 4.2 K to 300 K have been studied. First, by assuming the molecular field approximation, we calculated the magnetic entropy SM (T, H) of a typical 3-dimensional ferromagnetic substance near the Curie temperature as a function of temperature and ...
T. Hashimoto +3 more
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The criteria for selecting refrigerant materials for a magnetic refrigerator in the temperature range from 4.2 K to 300 K have been studied. First, by assuming the molecular field approximation, we calculated the magnetic entropy SM (T, H) of a typical 3-dimensional ferromagnetic substance near the Curie temperature as a function of temperature and ...
T. Hashimoto +3 more
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Manganese perovskites for room temperature magnetic refrigeration applications
Journal of Magnetism and Magnetic Materials, 2007Abstract We found the large magnetocaloric effect (MCE) in La 0.6 Ca 0.3 Pb 0.1 MnO 3 (sample No. 1), La 0.7 Ca 0.2 Pb 0.1 MnO 3 (sample No. 2), and La 0.7 Ca 0.1 Pb 0.2 MnO 3 (sample No. 3) perovskites, which were prepared by a conventional ceramic method.
Phan, MH +5 more
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Classification of room temperature magnetic refrigerators
2012Magnetic refrigeration has the capability to be a breakthrough technology in the field of refrigeration at room temperature and it has been recently addressed as one of the major promises in theme of energy savings. Several magnetic refrigerator prototypes have been developed by research groups, according to different embodiments and process ...
TAGLIAFICO, LUCA ANTONIO +2 more
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The LaFe11.2Co0.7Si1.1Cx carbides for magnetic refrigeration close to room temperature
Applied Physics Letters, 2008The influence of carbon on the structural, magnetic, and magnetocaloric properties of LaFe11.2Co0.7Si1.1Cx compounds was investigated. The Curie temperature increases with increasing the carbon content. The maximum magnetic entropy changes under a magnetic field change of 5T are about 14.5, 9.8, and 8.3J∕kgK for x=0.1, 0.2, and 0.3, respectively.
Mohamed Balli +2 more
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Room Temperature Magnetic Refrigeration Technology
2010Book Description: Refrigeration is the process of removing heat from an enclosed space, or from a substance, and moving it to a place where it is unobjectionable. The primary purpose of refrigeration is lowering the temperature of the enclosed space or substance and then maintaining that lower temperature.
TAGLIAFICO, LUCA ANTONIO +3 more
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Cooling performance of a room-temperature magnetic refrigerator prototype
Journal of Applied Physics, 2010The experimental prototype described in this research is a reciprocating active magnetic refrigerator with two permanent magnets and two active magnetic regenerators. Extensive tests have been carried out to measure the cooling performance of this prototype with nitrogen or helium as the heat transfer fluid. The prototype can produce a relatively large
Hong Zhang +3 more
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A review of room temperature linear reciprocating magnetic refrigerators
Renewable and Sustainable Energy Reviews, 2013Abstract Various AMR refrigerators prototypes have been developed with a view to implementing magnetic refrigeration (MR) at room temperature in a short time. This article describes the working mode of the two basic categories into which these can be divided (reciprocating and rotary) and compares them to show the advantages and disadvantages offered.
J. Romero Gómez +3 more
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Description and Performance of a Near-Room Temperature Magnetic Refrigerator
1998Magnetic refrigeration has been viewed as primarily a cryogenic technology because the necessary high magnetic fields are most easily provided by superconducting magnets. However, some of the largest magnetocaloric effects are exhibited by gadolinium-based alloys near room temperature.
C. Zimm +6 more
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Magnetic Refrigeration at Room Temperature: A State-of-the-Art Review
SAE Technical Paper Series<div class="section abstract"><div class="htmlview paragraph">Magnetic cooling technology, grounded in the magnetocaloric effect, is a significant area of study given its immense potential to address escalating energy demands and environmental issues posed by current technologies.
Sunil Meduri +2 more
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