A solar water heater on Sal, Cape Verde (Cabo Verde) heats your water with the sun, without electricity. With sun on almost every day of the year, it is one of the simplest ways to lower your energy bill in Santa Maria, Espargos, Murdeira or Palmeira.
How it works
Collectors on the roof absorb the heat of the sun and pass it to the water in an insulated tank. The hot water is ready for shower, kitchen and laundry; an electric element can take over on the rare cloudy day.
Which size?
The tank volume depends on the number of people and your habits. A household usually needs one tank with one or two collectors; a holiday home with guests more.
Points of attention on Sal
Wind resistant mounting on the flat roof.
Corrosion resistant materials against salt air.
Water quality: occasional descaling keeps the system efficient.