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Cool patents bring next-gen fridges closer

USA: Scientists at the US Caloric Materials Consortium, CaloriCool, claim to be closer to producing a caloric refrigeration system that is markedly more efficient than current gas compression systems.

It is estimated that residential and commercial cooling currently consumes about 20% of electricity generated in the US. CaloriCool claims that caloric refrigeration system could save as much as 30% in energy usage.

Consortium members have filed a pair of provisional patent applications on two caloric materials, which are compounds that generate strong cooling effects when acted upon by magnetic, electric, or mechanical forces. One of the materials has a magnetocaloric effect 50% better than any material of this class known before. The second patentable discovery corrects a flaw in an already known material, which was formerly thought to be too brittle to use outside of the laboratory setting.

“Both of these materials are composed of common elements, which means they will be reasonably inexpensive to make in mass production,” said CaloriCool director Vitalij Pecharsky, an Ames Laboratory scientist. “It’s an important hurdle to overcome for adoption of this technology into appliances and HVAC systems.”

CaloriCool’s ultimate goal is to transfer the solid-state cooling system technology into the marketplace for use in commercially available refrigeration appliances and systems.

Established as part of the Energy Materials Network, CaloriCool is sponsored by the DOE’s Office of Energy Efficiency and Renewable Energy through its Advanced Manufacturing Office, and led by the Ames Laboratory at Iowa State University.

Related stories:

US claims magnetic refrigeration advance29 March 2018
USA: Researchers in the US claim to have made a breakthrough in achieving refrigeration-level cooling by using very small quantities of magnetocaloric materials. Read more…

US team to begin caloric material tests18 April 2017
USA: A consortium researching possible caloric materials for use in next-generation refrigeration technologies expects to start tests this year. Read more…

US lab to research caloric cooling materials25 February 2016
USA: Research into the development of caloric materials for more environmentally-friendly refrigeration is to receive a share of $40m of annual US government funding. Read more…

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