Päikesekütteahelate

Päikesekütteahelad refer to solar thermal systems, a technology that captures solar energy and converts it into heat. These systems are primarily used for heating water and, in some cases, for space heating. A typical solar thermal system consists of solar collectors, a storage tank, and a distribution system. The collectors, often mounted on rooftops, absorb sunlight and transfer the heat to a fluid, usually water or a water-glycol mixture. This heated fluid then circulates through pipes to a storage tank, where the heat is stored for later use. When hot water or heat is needed, the stored thermal energy is transferred to the domestic hot water supply or the building's heating system.

There are several types of solar collectors used in these systems. Flat-plate collectors are the most common, featuring an insulated box with a dark absorber plate covered by a glass or plastic cover. Evacuated tube collectors are another type, consisting of parallel glass tubes from which air has been removed to create a vacuum, which reduces heat loss. These collectors are generally more efficient, especially in colder climates, but can be more expensive.

The efficiency and effectiveness of a päikesekütteahel depend on factors such as the amount of sunlight received, the collector's orientation and tilt angle, and the system's design and insulation. They can significantly reduce reliance on conventional energy sources for heating, leading to lower utility bills and a reduced carbon footprint. Integration with backup heating systems is common to ensure a consistent supply of hot water, particularly during periods of low solar irradiation.