Every year on September 16th, World Ozone Day is celebrated around the world, marking the 1987 signature of the Montreal Protocol on Substances that Deplete the Ozone Layer.
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Dutch start-up SoundEnergy uses thermoacoustics to change waste or solar heat into cooling, without refrigerants or vapor compression.
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Its compressor-free thermoelectric cooler, which employs CO2 and water, is being used by a range of end users, including Unilever, Pepsi Bottling and ThermoFisher Scientific.
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