The solar water heater is an energy-efficient and green alternative to the classic water heater. Discover here how a solar water heater works and what the advantages are.
How does a solar water heater work?
A solar water heater heats water with energy obtained from the sun. The energy of the sun is collected via a solar collector that is (usually) placed on the roof. There is a liquid in the solar collector. That heated liquid is led to a storage vessel. Once the heat has been released into the storage tank, liquid is pumped back to the collector to collect heat again.
The storage vessel will ensure that the solar heat is retained. The heat of the water in the storage vessel can reach 60 degrees. Usually there is also an auxiliary resistor. If there is too little sun, the auxiliary resistance can ensure that the water is heated to the desired temperature. Even on a cloudy day, the solar water heater will generate heat.
Energy saving solar water heater
A solar water heater in Spain uses up to 80 percent less energy compared to traditional water heaters. That is a significant saving. On the other hand, a solar water heater is more expensive to buy, but the good news is that you can easily recoup the investment in a few years.