aurinkolämmitykseen

Aurinkolämmitys, known in English as solar thermal heating, is a technology that converts sunlight into thermal energy for heating purposes. This process typically involves solar collectors, which absorb solar radiation and transfer the heat to a fluid, often water or a water-glycol mixture. This heated fluid is then circulated through a system to provide heat for domestic hot water, space heating, or even industrial processes.

The basic principle relies on the greenhouse effect within the collector. Sunlight passes through a transparent cover and strikes an absorber plate, which is usually dark-colored to maximize absorption. The heat absorbed by the plate is transferred to the fluid flowing through tubes attached to it. This heated fluid is then pumped to a storage tank, where the thermal energy can be stored for later use.

Solar thermal systems can be broadly categorized into active and passive systems. Active systems use pumps to circulate the heat transfer fluid, while passive systems rely on natural convection. Common types of collectors include flat-plate collectors and evacuated tube collectors, each with its own advantages in terms of efficiency and cost. Evacuated tube collectors, for example, are generally more efficient in colder climates due to their ability to reduce heat loss.

The primary benefits of aurinkolämmitys include reducing reliance on fossil fuels, lowering energy bills, and decreasing greenhouse gas emissions. It is a sustainable and renewable energy source that contributes to environmental protection. While the initial investment can be significant, the long-term savings and environmental advantages make it an attractive option for many households and businesses seeking to improve their energy efficiency and carbon footprint.