Magnetic cooling enables efficient, ‘green’ refrigeration

The rotation of the HoMn2O5 crystal in a constant magnetic field around 10K changes its temperature, which can be used for the liquefaction of helium and hydrogen. Credit: Applied Physics Letters/ M. Balli, et. al

Magnetic cooling is a promising new refrigeration technology boasting several advantages – ranging from lower energy consumption to eliminating the use of hazardous fluids – that combine to make it a much more environmentally friendly option than today’s standard fluid-compression form of refrigeration.

Researchers have developed a promising novel approach for magnetic cooling that’s far more efficient and ‘greener’ than today’s standard fluid-compression form of refrigeration. One novel magnetic cooling approach relies on solid magnetic substances called magnetocaloric materials to act as the refrigerant in miniaturized magnetic refrigerators. This discovery is an important step toward the development of magnetic cooling technology, and will likely lead to efficient, “green” cooling systems for both domestic and industrial applications.

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