Magnetocaloric refrigerator

Patent · Tue May 17 04:00:00 EDT 2022

OSTI ID:1892934

Vetrovec, Jan

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 portions of an MCE material to strong and weak magnetic field while coordinating the heat flow between the exposed portions by heat bridges to move the heat up the thermal gradient. The invention may be practiced with multiple MCE material portions or segments 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.

• Research Organization: US Dept. of Energy (USDOE), Washington, DC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: SC0013769
• Assignee: Vetrovec, Jan, Larkspur, CO (United States)
• Patent Number(s): 11,333,414
• Application Number: 16/873,068
• OSTI ID: 1892934
• Country of Publication: United States
• Language: English