Solar Thermal Energy

Solar Thermal Energy

Solar thermal energy is easily explained: everyone who has used a hose in the summer knows that principle. The hose lies in the full sun, the water in the hose heats up and after a short period of time, becomes hot.

Solar thermal collectors utilize this principle. A mixture of water and antifreeze is heated to a temperature of 95⁰C, which flows via a heat exchanger to the solar storage tank (hot water tank). Once the mixture cools down it is pumped again to the collector and the cycle is repeated.

Solar thermal energy can be used for heating water and buildings, and air conditioning. Combined with a good insulation the need for additional heating energy is reduced significantly. A well designed passive solar energy system can make an active heating system obsolete.

 Solar thermal energy system components

Solar thermal energy systems consist of:

  • Multiple solar collectors (flat panels or evacuated tubes)
  • A buffer storage tank for hot water and heating
  • A group of pumps, an insulated circuit of pipes, and an electronic controller
  • A buffer storage tank is connected to the heating system, enabling hot water and heat to be provided during the winter.