You may be wondering, "How do solar refrigerators and freezers work anyway?"
Convert the sun into energy
In short, the working principle of a solar refrigerator is to absorb sunlight and convert it into energy. This energy is then used to cool the storage room contained in the device. There are no moving parts and no electricity is needed; the whole process is based on natural sunlight.
Standard refrigerators and freezers, like most people, have in kitchens, garages, basements, or RVs, are equipped with compression refrigeration solutions to cool the motors inside the equipment.
On the other hand, solar refrigerators and freezers are absorption devices; in other words, they use heat from the sun and use the heat to convert the cooling solution into liquid.
Result: energy is generated, so the device can maintain a cold temperature inside f