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Title: Magnetocaloric refrigerator

Abstract

The invention is for an apparatus and method for a refrigerator and a heat pump based on the magnetocaloric effect (MCE) offering a simpler, lighter, robust, more compact, environmentally compatible, and energy efficient alternative to traditional vapor-compression devices. The subject magnetocaloric apparatus alternately exposes a magnetocaloric material to strong and weak magnetic field while switching heat to and from the material. Action of the heat switches is coordinated with the magnetic field strength to move heat up the thermal gradient. The invention may be practiced with multiple magnetocaloric stages to attain large differences in temperature. Key applications include thermal management of electronics, as well as industrial and home refrigeration, heating, and air conditioning. The invention offers a simpler, lighter, compact, and robust apparatus compared to magnetocaloric devices of prior art. Furthermore, the invention may be run in reverse as a thermodynamic engine, receiving low-level heat and producing mechanical energy.

Inventors:
Issue Date:
Research Org.:
US Department of Energy (USDOE), Washington DC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1632493
Patent Number(s):
10544965
Application Number:
15/731,852
Assignee:
Vetrovec, Jan, Larkspur, CO (United States))
Patent Classifications (CPCs):
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
F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
DOE Contract Number:  
SC0013769
Resource Type:
Patent
Resource Relation:
Patent File Date: 08/15/2017
Country of Publication:
United States
Language:
English

Citation Formats

Vetrovec, Jan. Magnetocaloric refrigerator. United States: N. p., 2020. Web.
Vetrovec, Jan. Magnetocaloric refrigerator. United States.
Vetrovec, Jan. Tue . "Magnetocaloric refrigerator". United States. https://www.osti.gov/servlets/purl/1632493.
@article{osti_1632493,
title = {Magnetocaloric refrigerator},
author = {Vetrovec, Jan},
abstractNote = {The invention is for an apparatus and method for a refrigerator and a heat pump based on the magnetocaloric effect (MCE) offering a simpler, lighter, robust, more compact, environmentally compatible, and energy efficient alternative to traditional vapor-compression devices. The subject magnetocaloric apparatus alternately exposes a magnetocaloric material to strong and weak magnetic field while switching heat to and from the material. Action of the heat switches is coordinated with the magnetic field strength to move heat up the thermal gradient. The invention may be practiced with multiple magnetocaloric stages to attain large differences in temperature. Key applications include thermal management of electronics, as well as industrial and home refrigeration, heating, and air conditioning. The invention offers a simpler, lighter, compact, and robust apparatus compared to magnetocaloric devices of prior art. Furthermore, the invention may be run in reverse as a thermodynamic engine, receiving low-level heat and producing mechanical energy.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {1}
}

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Works referenced in this record:

Magnetic refrigeration apparatus with heat pipes
patent, February 1987


Magnetic air conditioner
patent, March 2017