Development of an experimental rotary magnetic refrigerator prototype

Huang, B.; Lai, J.; Zeng, D. C.; Zheng, Z.; Harrison, B.; Oort, A.; van Dijk, N.H.; Brück, E.H.

Development of an experimental rotary magnetic refrigerator prototype

Journal article (2019)

Authors

B. Huang QRD/Kouwenhoven Lab - QuTech Advanced Research Centre , South China University of Technology

J. Lai South China University of Technology, RST/Fundamental Aspects of Materials and Energy -

D. C. Zeng South China University of Technology

Z. Zheng South China University of Technology

B. Harrison External organisation

A. Oort EMSD AS-south Project technicians

N.H. van Dijk RST/Fundamental Aspects of Materials and Energy -

E.H. Brück RST/Fundamental Aspects of Materials and Energy -

Research Group

QRD/Kouwenhoven Lab (QuTech Advanced Research Centre) (TU Delft)

Prototype Flow control Magnetic refrigeration Asymmetrical regenerator Rotary

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Published Date

2019

Language

English

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Faculty

QuTech Advanced Research Centre

Department

Qubit Research Division

Research Group

QRD/Kouwenhoven Lab

Abstract

A rotary active magnetic regeneration refrigerator prototype named FAME Cooler was developed for studying the performance of different magnetocaloric materials in a realistic practical environment. The rotary magnetic field source generates an average magnetic field of 0.875 T within a volume of 0.71 l The regenerator is designed asymmetrically and holds in total 1.18 kg of gadolinium spheres for a first performance test. Combined with a real-time controlled programmable solenoid-valves system, different working parameters or thermodynamic cycles can be applied. In the performance test, while the temperature of system hot side was fixed at 295 K, under a utilization condition of 0.25, this prototype achieved a maximum zero-span cooling power of 162.4 W, and a zero-power temperature span of 11.6 K. Under a utilization condition of 0.15, a maximum COP of 1.85 was reached. These performance metrics are comparable with existing magnetic heat pump devices of the same scale.