Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants

Title: Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants

Full Record
Similar

A magnetic refrigerant for a magnetic refrigerator using the Ericsson thermodynamic cycle comprises DyAlNi and (Gd.sub.0.54 Er.sub.0.46)AlNi alloys having a relatively constant .DELTA.Tmc over a wide temperature range.

Inventors:

Gschneidner, Jr., Karl A. ^[1]; Takeya, Hiroyuki ^[2]

(Ames, IA)
(Ibaraki, JP)

Issue Date:: 1995-10-31

OSTI Identifier:: 870134

Assignee:: Iowa State University Research Foundation, Inc. (Ames, IA) AMES

Patent Number(s):: US 5462610

Application Number:: 08/088,881

Contract Number:: W-7405-ENG-82

Research Org:: Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)

Country of Publication:: United States

Language:: English

Subject:: lanthanide; al-ni; base; ericsson; cycle; magnetic; refrigerants; refrigerant; refrigerator; thermodynamic; comprises; dyalni; gd; 54; 46; alni; alloys; relatively; constant; delta; tmc; wide; temperature; range; relatively constant; temperature range; magnetic refrigerator; wide temperature; thermodynamic cycle; magnetic refrigerant; magnetic refrigerants; /148/420/

Full Text
File size N/AView Full Text

Similar records in DOepatents and OSTI.GOV collections:

Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants

Patent Gschneidner, K.A. Jr. ; Takeya, Hiroyuki

A magnetic refrigerant for a magnetic refrigerator using the Ericsson thermodynamic cycle comprises DyAlNi and (Gd{sub 0.54}Er{sub 0.46})AlNi alloys having a relatively constant {Delta}Tmc over a wide temperature range. 16 figs.
October 1995
Ternary Dy-Er-Al magnetic refrigerants

Patent Gschneidner, Jr., Karl A. ; Takeya, Hiroyuki

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 July 1995
Active magnetic refrigerants based on Gd-Si-Ge material and refrigeration apparatus and process

Patent Gschneidner, Jr., Karl A. ; Pecharsky, Vitalij K.

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 April 1998
Thermonuclear inverse magnetic pumping power cycle for stellarator reactor

Patent Ho, Darwin D. ; Kulsrud, Russell M.

The plasma column in a stellarator is compressed and expanded alternatively in minor radius. First a plasma in thermal balance is compressed adiabatically. The volume of the compressed plasma is maintained until the plasma reaches a new thermal equilibrium. The plasma is then expanded to its original volume. As a result of the way a stellarator works, the plasma pressure during compression is less than the corresponding pressure during expansion. Therefore, negative work is done on the plasma over a complete cycle. This work manifests itself as a back-voltage in the toroidal field coils. Direct electrical energy is obtained frommore »« less
Full Text Available January 1991
THERMONUCLEAR INVERSE MAGNETIC PUMPING POWER CYCLE FOR STELLARATOR REACTOR

Patent Ho, Darwin D. ; Kulsrud, Russell M.

Full Text Available July 1991