The heat transfer water is circulated through the solar heat collector to collect heat, and the heat is stored in the storage tank through the heat exchanger.
The heat in the storage tank is efficiently distributed and used for hot water supply , heating and cooling.
A backup water heater is connected to the storage tank in case the solar heat is insufficient.
By using renewable energy as fuel for backup water heaters, it is possible to further reduce CO2 emissions.
We are preparing our own large solar heat collectors.