Green material for refrigeration identified

phys.org | 3/27/2019 | Staff
idkwatitis (Posted by) Level 3
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Researchers from the UK and Spain have identified an eco-friendly solid that could replace the inefficient and polluting gases used in most refrigerators and air conditioners.

When put under pressure, plastic crystals of neopentylglycol yield huge cooling effects—enough that they are competitive with conventional coolants. In addition, the material is inexpensive, widely available and functions at close to room temperature. Details are published in the journal Nature Communications.

Gases - Majority - Refrigerators - Air - Conditioners

The gases currently used in the vast majority of refrigerators and air conditioners —hydrofluorocarbons and hydrocarbons (HFCs and HCs)—are toxic and flammable. When they leak into the air, they also contribute to global warming.

"Refrigerators and air conditioners based on HFCs and HCs are also relatively inefficient," said Dr. Xavier Moya, from the University of Cambridge, who led the research with Professor Josep Lluís Tamarit, from the Universitat Politècnica de Catalunya. "That's important because refrigeration and air conditioning currently devour a fifth of the energy produced worldwide, and demand for cooling is only going up."

Problems - Materials - Scientists - World - Refrigerants

To solve these problems, materials scientists around the world have sought alternative solid refrigerants. Moya, a Royal Society Research Fellow in Cambridge's Department of Materials Science and Metallurgy, is one of the leaders in this field.

In their newly published research, Moya and collaborators from the Universitat Politècnica de Catalunya and the Universitat de Barcelona describe the enormous thermal changes under pressure achieved with plastic crystals.

Cooling - Technologies - Changes - Fluid - Expands

Conventional cooling technologies rely on the thermal changes that occur when a compressed fluid expands. Most cooling devices work by compressing and expanding fluids such...
(Excerpt) Read more at: phys.org
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