Collettori solari termici

SOLAR THERMAL COLLECTORS

Interlock imports 2 kinds of thermal solar panels (or solar collectors):

  1. glass solar modules
  2. vacuum solar modules

Since we address experts in the field, we will not ponder on the features of such modules.

Let us just give some information on the advantages they bring to whoever decides to install them. Solar Thermal panels heat domestic water for daily use without consuming gas or electricity. They work according to a very basic principle: they use the sun’s heat to heat or produce hot domestic water, which can even reach 70° (or 90° in the event of vacuum tubes) in the summer, thus well above the average 40°-45° needed for a shower. Up to a certain extent, they are a valid surrogate of electric water heaters or gas boilers for the generation of hot water that is needed to wash dishes, to take a shower or a bath, etc.

How a thermal solar modules works

A thermal solar panel (or solar collector) is made up of a radiator that absorbs the heat of the sun’s rays and conveys it to the water tank. The water flows from the tank to the domestic taps by either natural or forced circulation; in this last case, the solar panel integrates an electricity-fed hydraulic pump.

How many panels are needed to heat water

The number of thermal solar collectors needed depends on the user’s requirements and on local climate. A one-square-metre thermal collectors satisfies, on average, 80-130 hot water litres per day, at an average temperature of 40°. People’s average consumption of hot water is some 30-50 litres per day; therefore, a one-square-metre panel should be able to satisfy the need for hot water of 1-2 people.
The technology of our collectors has long overcome the problems due to rainy and cloudy days. Heated water is kept in insulated tanks so as to guarantee a certain level of autonomy for many hours. This is why many countries with substantially lower insolation levels than in Italy have long invested in thermal solar panels... much more extensively than in our sunny country! Solar panels or thermal collectors are now commonly used in Germany and Austria etc. etc.

Solar panels and boilers

Solar Thermal Collectors do not replace boilers; rather, they are a complementary system that reduces the consumption of gas to heat domestic water. Therefore, when solar collectors are installed, it is nonetheless advisable to install a gas boiler or an electric water heater too. The solar panel and the boiler can then be serially connected so as to have the latter work less and reduce gas consumption. Such a solution guarantees the production of hot water at any time and the ideal solution to any emergency.