Une unité frigorifique solaire en Californie
Tested over five months in California's San Joachin Valley, the first solar-powered transport refrigeration unit on a city delivery truck produced positive results. Compared to a diesel truck reefer unit, it has been estimated that the "Rayfrigeration" could reduce nitrous oxide by 98%, carbon dioxide by 86%, and particulate matter by 97%. The 1,800 W eNow solar power system provided more than enough energy to maintain proper temperature throughout a typical day of opening and closing the doors while the refrigerated truck delivered fresh dairy products in California's summer heat. The unit's cold plates and batteries are initially charged from utility power overnight, but while on a delivery route, the power is provided by solar photovoltaic panels mounted on the truck's roof.
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