Patent · US Active

Magnetocaloric cascade and method for fabricating a magnetocaloric cascade

US10229775B2 · kind B2 · utility

7Cited by

1References

15Claims

0Family size

Assignee

BASF SE

Inventors

Florian Scharf · Frankfurt, DE
Markus SCHWIND · Ludwigshafen, DE
David VAN ASTEN · Utrecht, NL
Steven Jacobs · North Wales, US

Key dates

Filing date	Dec 7, 2015
Grant date	Mar 12, 2019
Priority date	—
Expiry date	Dec 7, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B30/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A magnetocaloric cascade contains a sequence of magnetocaloric material layers having different Curie temperatures TC, wherein the magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer, and each pair of next neighboring magnetocaloric layers of the magnetocaloric cascade has a respective Curie-temperature difference amount ΔTC between their respective Curie temperatures, wherein the hot-side outer layer or the cold-side outer layer or both the hot-side and cold-side outer layer exhibits a larger ratio mΔSmax/ΔTC in comparison with any of the inner layers, m denoting the mass of the respective magnetocaloric material layer and ΔSmax denoting a maximum amount of isothermal magnetic entropy change achievable in a magnetic phase transition of the respective magnetocaloric material layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.