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Applied Energy
Article . 2024 . Peer-reviewed
License: CC BY
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https://doi.org/10.2139/ssrn.4...
Article . 2023 . Peer-reviewed
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A low-frequency ferrohydrodynamic pump for a magneto-caloric refrigerator

Authors: Keerthivasan Rajamani; Eva Juffermans; Luca Granelli; Ana De Cuadra Rabaneda; Wilko Rohlfs; Marcel ter Brake; Theo van der Meer; +1 Authors

A low-frequency ferrohydrodynamic pump for a magneto-caloric refrigerator

Abstract

Ferrohydrodynamic or magnetic pumping enables the design of a magnetocaloric refrigerator with no moving parts. Existing magnetic pumps utilize travelling wave magnetic fields with frequencies in the range of 100 to 1000 Hz. Such high frequencies when utilized in the proposed refrigerator could cause heating which is detrimental to its performance. Hence, a magnetic pump that works with low magnetic field frequencies (¡ 1 Hz) is designed and its performance is experimentally characterized and compared against an one-dimensional model. The design of the magnetic pump consists of a rising and falling pipe, circumscribed by an electromagnetic coil. On application of a magnetic field, due to the inward acting force on either end of the pipes, the ferrofluid progresses in the rising pipe and reaches the falling pipe. On removal of the magnetic field, the portion of the fluid in the falling pipe falls down due to gravity, thereby achieving a net pumping action. Thus on continuously cycling the magnetic field, an intermittent motion of the ferrofluid is obtained. The maximum cross-sectional area and time-averaged mass flow rate of the proposed design is 1.8 g s-1 cm-2 at 0.74 Hz and 35.7 mT. This mass flow rate is comparable to pump designs that work on travelling wave magnetic fields, whose operational frequency is three orders of magnitude higher.

Country
Netherlands
Related Organizations
Keywords

No moving parts, EFH1, Magnetocaloric refrigerator, Ferrofluid, SDG 7 - Affordable and Clean Energy, Ferrohydrodynamics, Magnetic pumping

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Top 10%
Related to Research communities
Energy Research