New Salt-Based Cooling Method Could Replace Harmful Refrigerants
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📰 The quick summary: Scientists have developed ionocaloric cooling, a new refrigeration method that can replace environmentally harmful refrigerants with a technology that uses salt ions to change a material’s phase and cool its surroundings.
📈 One key stat: Researchers achieved a temperature shift of 25 degrees Celsius with less than one volt of charge, surpassing the performance of other caloric cooling technologies.
💬 One key quote: “No one has successfully developed an alternative solution that makes stuff cold, works efficiently, is safe, and doesn’t hurt the environment. We think the ionocaloric cycle has the potential to meet all those goals if realized appropriately.”
1️⃣ The big picture: Scientists from Lawrence Berkeley National Laboratory and UC Berkeley have invented ionocaloric cooling, a revolutionary new refrigeration method. This approach uses salt ions to change a material’s phase, similar to how road salt prevents ice formation. Unlike conventional refrigeration systems that rely on environmentally harmful gases like hydrofluorocarbons (HFCs), ionocaloric cooling is potentially safer and better for our planet. The technology moves ions through materials using an electrical current, shifting their melting points to create temperature changes that can efficiently cool spaces.
2️⃣ Why is this good news: Ionocaloric cooling addresses three critical challenges in refrigeration: low global warming potential (GWP), high energy efficiency, and reasonable equipment costs. The technology could dramatically reduce our reliance on hydrofluorocarbons, helping countries meet their commitment to cut HFC use by 80 percent over the next 25 years. Early experiments have shown promising results, with some versions using nitrate-based salts that can be recycled using electric fields and membranes. The cycle can potentially be used for both heating and cooling applications, providing versatile climate control with minimal environmental impact.
3️⃣ What’s next: Researchers now need to move this technology from lab testing to practical commercial systems that can scale without issues. They’re experimenting with different salt combinations to find the most effective formulas for drawing heat from spaces. Ongoing studies are refining the engineering to test various materials and techniques that could optimize this promising new cooling method.
Read the full story here: ScienceAlert – Scientists Invented an Entirely New Way to Refrigerate
