lämmönmassalla

Lämpömassalla, often translated as thermal mass, refers to the ability of a material to store heat. It is a fundamental property in building science and thermal engineering, influencing how buildings respond to temperature changes. Materials with high thermal mass, such as concrete, stone, or brick, can absorb large amounts of heat energy and release it slowly over time. This characteristic is particularly beneficial in climates with significant diurnal temperature variations, where temperatures swing between day and night.

The concept of thermal mass is utilized in passive solar design. During the day, when the sun is shining, materials with high thermal mass absorb solar radiation and store the heat. As the ambient temperature drops in the evening, the stored heat is gradually released back into the interior space, moderating the temperature and reducing the need for active heating systems. Conversely, in hot climates, thermal mass can absorb heat during the day and release it at night when temperatures are cooler, helping to keep indoor spaces more comfortable.

The effectiveness of thermal mass depends on several factors, including the material's specific heat capacity, density, and thickness. The placement of the material is also crucial; it needs to be exposed to the heat source (like sunlight) or the space that needs temperature moderation. While beneficial for temperature regulation, high thermal mass can also lead to slower response times when heating or cooling is required, meaning it takes longer for the space to reach the desired temperature. Understanding and applying the principles of thermal mass is key to creating energy-efficient and comfortable buildings.