Cooled By Sun And Salt

PER OLOFSSON

If ever there was an innovation unlikely to come out of Sweden, it's this one.

Aiming to squeeze the amount--and cost--of energy used to cool homes and businesses in warm-weather areas, ClimateWell, based in balmy H├Ągersten, south of Stockholm, is marketing a novel solution: solar-powered air conditioning.

Unlike conventional cooling or heating systems fueled by such nonrenewable energy sources as oil and gas, ClimateWell's CW10 system--which can also warm your home in winter--slashes energy use by effectively running off water heated by the sun. And don't worry if it isn't always sunny: the clever system stores energy for conversion later into...

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