A solar water heater is as straightforward as it sounds: it’s a device that heats water using the sun’s energy harvested by your solar panels.
Raising the temperature of 100 to 300 litres of water to 60 degrees or 80 degrees Celsius is very achievable for a domestic solar water heater.
How a solar water heater works
A solar water heater has a collector panel responsible for catching sunlight and radiation. The absorber inside the collector transfers the heat from the energy it collected to the water that flows through it. The heated water is then stored in an insulated tank (the insulation keeps the heat inside). The thermos siphon system automatically allows for water circulation to the collector from the tank to make sure the water is at the right temperature. This process will keep going as long as heat can be drawn from the collector.
Uses of Solar Water Heaters
Solar water heaters can be used in various areas and establishments such as swimming pools, cafeterias, hotels, dairy plants, nursing homes, and hospitals. Just like solar panels, solar water heaters can significantly reduce electricity expenses.