A comparison between different materials in an active electrocaloric regenerative cycle with a 2D numerical model

Aprea, Ciro; Greco, Adriana; Maiorino, Angelo; Masselli, Claudia

doi:10.1016/j.ijrefrig.2016.06.016

Cited by 51 publications

(32 citation statements)

References 42 publications

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“…must be carefully considered to realize efficient cooling systems. Here, the efficiency of an ECM, its refrigeration capacity or, if sufficient data are available, more sophisticated values as a materials figure of merit should be used to compare ECM. However, data on availability, reliability, costs, and other application related issues rarely exist.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, detailed material databases are desirable, which can be used in this design procedure once they are available. Currently, appropriate materials have to be found using basic material overviews in literature and latest individual publications.…”

Section: Resultsmentioning

confidence: 99%

“…Unfortunately, with the model used, no realistic quantitative predictions of temperature span or cooling power could be made because the housing, flow maldistribution, and other losses were not modelled. More comprehensive 2D approaches or even 3D approaches including environmental influences would be necessary to do so.…”

Section: Resultsmentioning

confidence: 99%

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Design Methodology for Electrocaloric Cooling Systems

Blumenthal

Raatz

2018

Energy Tech

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For over a decade now, the electrocaloric effect (ECE) and electrocaloric (EC) cooling have been the subject of increasing research activities. Research on electrocaloric materials (ECM) is quite advanced; however, significant progress on EC cooling systems is still missing. Therefore, a methodological approach for the structured development of EC cooling systems is presented here. It is based on the well‐known V‐Model and integrates different tools, as a classification of device types, influencing factors, and numerical simulation methods. The methodology can be used to structure development processes and to identify favorable geometrical and operating parameters of an EC cooling device. The methodology is validated with a demonstrator, which is designed, built, and practically tested for over 2000 h. With this small‐scale device and a low electrical field strength of 3 kV mm−1, a temperature span of over 1.1 K could be achieved.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Design Methodology for Electrocaloric Cooling Systems

Blumenthal

Raatz

2018

Energy Tech

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“…Indeed, a preliminary campaign by numerical simulation has been carried out to identify the optimal cycle frequency. The secondary fluid is deionized water that flows in the channels between the plates [45][46][47][48][49].…”

Section: Regenerator Geometrymentioning

confidence: 99%

“…The two-dimensional numerical model introduced in this paper has been validated through a comparison between the result collected and experimental ones, obtained by carrying out the results from a Rotary Permanent Magnet Magnetic Refrigerator (RPMMR), developed at the Refrigeration Lab (LTF), University of Salerno [44,[46][47][48][49]. RPMMR is the first Italian prototype of magnetic refrigerator: it is composed by 8 regenerators, fixed radially in a stationary ring, whom is subjected to a variable magnetic field, generated by the rotation of permanent magnets.…”

Section: Validation Of the Modelmentioning

confidence: 99%

A comparison between electrocaloric and magnetocaloric materials for solid state refrigeration

Aprea¹,

Greco²,

Maiorino³

et al. 2017

IJHT

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Electrocaloric and magnetic refrigeration are two emerging, solid-state based technology, which could constitute a real chance to overcome vapor compression refrigeration limits. To underline the differences and the affinities concerning such solid-state techniques, in this paper electrocaloric and magnetic refrigeration are compared through some performance parameters. For this purpose, it has been introduced a two-dimensional model, capable to reproduce, in room temperature range, the behaviors of both AMR and AER parallel plates regenerator. AMR and AER are the acronyms of Active Magnetic/Electrocaloric Regenerative cycle, respectively, which are inverse Brayton based thermodynamical cycles. In the model have been tested as refrigerant the most promising magnetic and electrocaloric materials, like Gd, Gd5(SixGe1-x)4, LaFe11.384 Mn0.356Si1.26H1.52, LaFe11.05Co0.94Si1.10, as magnetocaloric, P(VDF-TrFE-CFE)/BSTs, 0.93PMN-0.07PT, PLZTs, as electrocaloric ones. Among them, the PLZT thin film class confers the best results, higher than every magnetocaloric material tested, conferring to electrocaloric refrigeration the real role of the environmental friendly technology of the future.

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Electrocaloric Coolers: A Review

Torelló

Defaÿ

2022

Adv Elect Materials

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Since the discovery of giant electrocaloric effects, researchers are intensively studying electrocaloric cooling as an alternative to vapor compression systems to develop more efficient heat pumps and mitigate climate change. Endorsed by its direct use of electricity, easy‐handling, and compact design, recent advancements in the performance of electrocaloric coolers have finally displayed temperatures comparable to similar competing technologies, and the topic has regained attention and interest. In this work, the design, performance, and working principles of all electrocaloric prototypes before the year 2021 are reviewed, and hints and guidelines are given for future works to bring the development of these devices one step closer to real applications.

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A comparison between different materials in an active electrocaloric regenerative cycle with a 2D numerical model

Cited by 51 publications

References 42 publications

Design Methodology for Electrocaloric Cooling Systems

Design Methodology for Electrocaloric Cooling Systems

A comparison between electrocaloric and magnetocaloric materials for solid state refrigeration

Electrocaloric Coolers: A Review

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