Through the solar collectors flat solar thermal energy, we can produce hot water at 60 ° C to supply hotels, hospitals, gyms, laundries, vehicle washing centers, and many other businesses with high consumption of hot water.
The process is simple and very efficient, through the solar collectors it pass a heat-transfer liquid normally composed of water and propylene glycol (liquid that improves the thermal absorption properties of the fluid). This fluid absorbs the calories produced by the solar collector, by the direct radiation of the sun on its surface. A control system compares the temperature of the solar collectors with the accumulation tank. When the temperature in the solar collector is higher than the temperature of the tank, a pumping system is automatically started by removing the heat transfer fluid from the collector to make it pass through an exchange system with the water accumulator.
When the radiation is high, the solar system can provide the total water needed for consumption, and when the radiation is low it will serve to preheat the water before going through the boiler, reducing the time of use to get the temperature desired.
The return on these investments is between 3 and 4 years, depending on the fuel of the boiler. We can achieve a saving of 80% in fuel consumption without fear of overheating the water when the radiation is too high.