Numerical modelling and experimental validation of a regenerative electrocaloric cooler

Plaznik, Uroš; Vrabelj, Marko; Kutnjak, Zdravko; Malič, Barbara; Rožič, B.; Poredoš, Alojz; Kitanovski, Andrej

doi:10.1016/j.ijrefrig.2018.10.029

Cited by 50 publications

(40 citation statements)

References 37 publications

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“…Therefore, a higher fluid motion ensures a more homogenous fluid motion. The existence of an optimum fluid displacement amplitude was also observed by other groups, for example such as in [49] for electrocaloric regenerative cooling or in [17,50] for magnetocaloric regenerative cooling. In our experiment and simulation, the optimum displacement is found to be around 10% of the total length of the cooling system.…”

Section: Property Symbol Value Unitsupporting

confidence: 67%

Regenerative cooling using elastocaloric rubber: Analytical model and experiments

Sebald

Komiya

Jacques

et al. 2020

Journal of Applied Physics

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Property Symbol Value Unitsupporting

confidence: 67%

Regenerative cooling using elastocaloric rubber: Analytical model and experiments

Sebald

Komiya

Jacques

et al. 2020

Journal of Applied Physics

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“…Our model captures the first two irreversibilities. Previous studies on magnetocaloric cooling, elastocaloric cooling, and EC cooling have suggested approaches for capturing irreversibilities from the P ‐ E hysteresis loops, but none of them can be readily incorporated in our model due to a lack of experimental data.…”

Section: Methodsmentioning

confidence: 90%

Device‐level thermodynamic model for an electrocaloric cooler

Gong

McGaughey

2020

Int J Energy Res

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An electrocaloric (EC) cooling device model is proposed to study the influence of material properties, operating conditions, and device design on the coefficient of performance (COP). Because the EC temperature change cannot be predicted by ferroelectric material models, a Gaussian-fit model is proposed that achieves accurate predictions for a range of materials. The COP is calculated by considering the heat transfer and work in a thermodynamic cycle that is integrated with the material model. The device model is based on the experiments of Ma et al (Science. 2017;357:1130) and includes contact and convective thermal resistances, the work to apply the electric fields, and dielectric loss heating. A copolymer and a terpolymer are analyzed. The predicted heat flux is in good agreement with the experimental data while the predicted COP is lower. This difference is attributed to an over-prediction of the work because experimental hysteresis loop data are not available. Parametric analysis reveals that: (a) the terpolymer performance is stable over a wide range of operating temperatures, while good performance of the copolymer is limited to near its Curie temperature, and (b) small contact thermal resistances allow for highfrequency operation and a large heat flux. K E Y W O R D Scoefficient of performance, ferroelectric polymer, solid-state cooling, thermal analysis

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“…• Electrocaloric effect: adiabatic temperature change by variation of electrical field [11] [12] • Barocaloric effect: adiabatic temperature change by variation of hydrostatic pressure [13] • Elastocaloric effect: adiabatic temperature change by variation of uniaxial mechanical stress [14] [15] • Magnetocaloric effect: adiabatic temperature change by variation of magnetic field [16] [17] In addition, the concept of the active regenerative cycle can be applied to these caloric effects. It allows the device to transfer heat up to the temperature scale in a useful temperature span for HVAC applications, which is much larger than the sole adiabatic temperature change due to the caloric effect [16].…”

Section: Magnetocaloric Technologymentioning

confidence: 99%

Integration of a magnetocaloric heat pump in an energy flexible residential building

et al. 2019

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Numerical modelling and experimental validation of a regenerative electrocaloric cooler

Cited by 50 publications

References 37 publications

Regenerative cooling using elastocaloric rubber: Analytical model and experiments

Regenerative cooling using elastocaloric rubber: Analytical model and experiments

Device‐level thermodynamic model for an electrocaloric cooler

Integration of a magnetocaloric heat pump in an energy flexible residential building

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