SMACool: First major breakthrough in air conditioning in 100 years replaces toxic refrigerants with quiet, more efficient metal tubes

https://techxplore.com/news/2025-04-smarter-cooling-technology-tackles-climate.html

"recyclable nitinol nickel-titanium alloy phase transforms while remaining solid, instead of from liquid to gas and back again... elastocaloric cooling: heats up with mechanical stress, cools when relieved... nitinol wires biocompatible... so far only 15% (could reach up to 70%) efficient, while vapor compression 20-30%... nitinol wires degrade (fatigue) quickly when stretched repeatedly to induce phase change, overcome compressing instead of stretching, reducing physical stress for practically unlimited lifespan... >30°C range"

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TCCI Manufacturing and TekModo Unveil Breakthrough HVAC Technology Eliminating Rooftop Units with Off-Grid Sustainable Climate Systems


New RMI Study Finds Next-Gen ACs Cut Energy Costs by 50% in India

Supermarket heating/ cooling: up to 76.2% energy savings, intelligent solar and waste heat recovery
https://www.acebattery.com/blogs/pv-powered-heating-and-cooling-system-for-supermarkets-a-breakthrough-in-sustainable-energy-solutions

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