Wheel-type magnetic refrigerator

Barclay, John A

Title: Wheel-type magnetic refrigerator

Full Record
Other Related Research

Abstract

The disclosure is directed to a wheel-type magnetic refrigerator capable of cooling over a large temperature range. Ferromagnetic or paramagnetic porous materials are layered circumferentially according to their Curie temperature. The innermost layer has the lowest Curie temperature and the outermost layer has the highest Curie temperature. The wheel is rotated through a magnetic field perpendicular to the axis of the wheel and parallel to its direction of rotation. A fluid is pumped through portions of the layers using inner and outer manifolds to achieve refrigeration of a thermal load.

Inventors:

Barclay, John A ^[1]

Los Alamos, NM

Issue Date:: 1983-01-01

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 864724

Patent Number(s):: 4408463

Assignee:: Barclay, John A. (Los Alamos, NM)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

Show more

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F1/012 - {adapted for magnetic entropy change by magnetocaloric effect, e.g. used as magnetic refrigerating material

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
Y02B30/00 - Energy efficient heating, ventilation or air conditioning [HVAC]

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S505/891 - Magnetic or electrical effect cooling
Y10S505/889 - Utilizing rare earth material

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F25B2321/0021 - with a static fixed magnet
F25B21/00 - Machines, plant, or systems, using electric or magnetic effects {

Show less

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: wheel-type; magnetic; refrigerator; disclosure; directed; capable; cooling; temperature; range; ferromagnetic; paramagnetic; porous; materials; layered; circumferentially; according; curie; innermost; layer; lowest; outermost; wheel; rotated; field; perpendicular; axis; parallel; direction; rotation; fluid; pumped; portions; layers; inner; outer; manifolds; achieve; refrigeration; thermal; load; outer manifold; curie temperature; porous material; temperature range; magnetic field; porous materials; magnetic refrigerator; outermost layer; thermal load; outer manifolds; field perpendicular; wheel-type magnetic; /62/505/

Citation Formats


                    Barclay, John A. Wheel-type magnetic refrigerator.  United States: N. p., 1983. 
        Web.

Copy to clipboard


                    Barclay, John A. Wheel-type magnetic refrigerator.  United States.

Copy to clipboard


                    Barclay, John A. Sat .  
        "Wheel-type magnetic refrigerator".  United States.  https://www.osti.gov/servlets/purl/864724.

Copy to clipboard


                    
@article{osti_864724,

  title        = {Wheel-type magnetic refrigerator},

  author       = {Barclay, John A},

  abstractNote = {The disclosure is directed to a wheel-type magnetic refrigerator capable of cooling over a large temperature range. Ferromagnetic or paramagnetic porous materials are layered circumferentially according to their Curie temperature. The innermost layer has the lowest Curie temperature and the outermost layer has the highest Curie temperature. The wheel is rotated through a magnetic field perpendicular to the axis of the wheel and parallel to its direction of rotation. A fluid is pumped through portions of the layers using inner and outer manifolds to achieve refrigeration of a thermal load.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1983},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Active magnetic refrigerants based on Gd-Si-Ge material and refrigeration apparatus and process

Patent Gschneidner, Jr., Karl A. (Ames, IA); Pecharsky, Vitalij K [Ames, IA]

Active magnetic regenerator and method using Gd.sub.5 (Si.sub.x Ge.sub.1-x).sub.4, where x is equal to or less than 0.5, as a magnetic refrigerant that exhibits a reversible ferromagnetic/antiferromagnetic or ferromagnetic-II/ferromagnetic-I first order phase transition and extraordinary magneto-thermal properties, such as a giant magnetocaloric effect, that renders the refrigerant more efficient and useful than existing magnetic refrigerants for commercialization of magnetic regenerators. The reversible first order phase transition is tunable from approximately 30 K to approximately 290 K (near room temperature) and above by compositional adjustments. The active magnetic regenerator and method can function for refrigerating, air conditioning, and liquefying low temperaturemore »« less
Full Text Available
Method of making active magnetic refrigerant, colossal magnetostriction and giant magnetoresistive materials based on Gd-Si-Ge alloys

Patent Gschneidner, Jr., Karl A. (Ames, IA); Pecharsky, Alexandra O [Ames, IA]; Pecharsky, Vitalij K [Ames, IA]

Method of making an active magnetic refrigerant represented by Gd.sub.5 (Si.sub.x Ge.sub.1-x).sub.4 alloy for 0.ltoreq.x.ltoreq.1.0 comprising placing amounts of the commercially pure Gd, Si, and Ge charge components in a crucible, heating the charge contents under subambient pressure to a melting temperature of the alloy for a time sufficient to homogenize the alloy and oxidize carbon with oxygen present in the Gd charge component to reduce carbon, rapidly solidifying the alloy in the crucible, and heat treating the solidified alloy at a temperature below the melting temperature for a time effective to homogenize a microstructure of the solidified material, andmore »« less
Full Text Available
Magnetic refrigeration system with separated inlet and outlet flow

Patent Auringer, Jon Jay; Boeder, Andre Michael; Chell, Jeremy Jonathan; ...

An active magnetic regenerative (AMR) refrigerator apparatus can include at least one AMR bed with a first end and a second end and a first heat exchanger (HEX) with a first end and a second end. The AMR refrigerator can also include a first pipe that fluidly connects the first end of the first HEX to the first end of the AMR bed and a second pipe that fluidly connects the second end of the first HEX to the first end of the AMR bed. The first pipe can divide into two or more sub-passages at the AMR bed. Themore »« less
Full Text Available
Ternary Dy-Er-Al magnetic refrigerants

Patent Gschneidner, Jr., Karl A. (Ames, IA); Takeya, Hiroyuki [Ibaraki, JP]

A ternary magnetic refrigerant material comprising (Dy.sub.1-x Er.sub.x)Al.sub.2 for a magnetic refrigerator using the Joule-Brayton thermodynamic cycle spanning a temperature range from about 60K to about 10K, which can be adjusted by changing the Dy to Er ratio of the refrigerant.
Full Text Available
Erbium-based magnetic refrigerant (regenerator) for passive cryocooler

Patent Gschneidner, Jr., Karl A. (Ames, IA); Pecharsky, Vitalij K [Ames, IA]

A two stage Gifford-McMahon cryocooler having a low temperature stage for reaching approximately 10K, wherein the low temperature stage includes a passive magnetic heat regenerator selected from the group consisting of Er.sub.6 Ni.sub.2 Sn, Er.sub.6 Ni.sub.2 Pb, Er.sub.6 Ni.sub.2 (Sn.sub.0.75 Ga.sub.0.25), and Er.sub.9 Ni.sub.3 Sn comprising a mixture of Er.sub.3 Ni and Er.sub.6 Ni.sub.2 Sn in the microstructure.
Full Text Available

Similar Records