Thermal solar panels, all the info

That ofthermal solar panelsit is a technology that has earned the trust of consumers; thanks tothermal solar panelsit is possible to drastically reduce the costs associated with heating domestic water and air.

The performance ofthermal solar panelshas gradually grown, so much so that one square meter of solar thermal collector it can heat up to 45-60 ° C, between 40 and 300 liters of water per day; the performance of thermal solar panels varies with climatic conditions and with the type of collector chosen and ranges from 50 to 80 percent.

Thermal solar panels - where to mount them

Solar radiation is the most abundant and cleanest energy source in theglobeand thanks tothermal solar panelsit is also possible to benefit from it in the home with extreme simplicity. The most common applications see the use ofthermal solar panelsfor the production of domestic hot water, space and swimming pool heating.

THEsolar collectors they are generally mounted on the roof, in the garden or on specially made supports to ensure good orientation. At the time of assembly of thermal solar panels (you seeInstall a solar thermal panel for hot water production) it is good to exclude any shadow risk area and it is necessary to choose a south orientation, placing the panel more or less at 35 °.
With the right inclination, thesolar thermal panelcaptures the sun's rays to transmit thermal energy to the conductive liquid that passes inside the same panel; the liquid acts as a conductor of heat by transporting the thermal energy to the exchanger so as to load the boiler.

Types of solar thermal panels

There are severaltypes of solar thermal panels, we have sonatural circulation, forced circulation thermal solar panels and emptying thermal solar panels. The systems listed above all perform the same function but with different mechanisms of action; on a descriptive level (without getting lost in technicalities), we will explain how these different types of domestic hot water can producetypes of solar thermal panels.

Natural circulation solar thermal system

They are free of pumps and electrical components, so they require minimal maintenance. The system ofthermal solar panelsfocuses on an indirect exchange: in the pipes of the solar collector a fluid passes which, exposed to radiation, heats up and rises by convention towards the tank entering a special cavity where it transfers the heat to the water contained therein.

Forced circulation solar thermal system

The solar collector it is flanked by an electric pump managed by a solar control unit and by various probes. In the tank there is a coil connected directly with i solar collectors; the fluid contained in the solar panels, once heated, heats the probe and sends the data to the electronic control unit which operates the pump.
The pump pushes the hot fluid inside the exchanger contained in the tank, the exchanger in turn transmits the heat to the domestic water contained therein.

Emptying solar thermal system (forced circulation)

The operating scheme is the same as seen above, for theforced circulation solar thermal system but this extra system involves removing the fluid to avoid overheating problems.
Aforced circulation solar thermal systemit may require some extraordinary maintenance due to problems linked to high temperatures (due to the stagnation of the fluid in the collector) or, on the contrary, due to too low temperatures in the winter season.

With i forced emptying thermal solar panels, whenever the temperature set in the solar boiler is reached, the system automatically empties itself by removing the fluid from the panels. In addition, even emptying itself every night, i solar collectors with forced emptying, they do not need antifreeze liquid, which is necessary instead for forced circulation and natural circulation solar systems.

Video: Hybrid Solar PV Thermal System (January 2022).