Soojusläbilaskvus

Soojusläbilaskvus, also known as thermal transmittance, is a measure of a building element's ability to conduct heat. It is expressed in units of watts per square meter per Kelvin (W/m²K) or watts per square meter per degree Celsius (W/m²°C). A lower soojusläbilaskvus value indicates better thermal insulation, meaning less heat will pass through the element. This is an important factor in assessing the energy efficiency of buildings.

The soojusläbilaskvus is determined by the thermal conductivity of the materials used in the building element, as well as their thickness and the presence of any air gaps. Different materials have different thermal conductivities, with some materials being better insulators than others. For example, materials like mineral wool or polystyrene foam have low thermal conductivity, making them effective for insulation.

Building regulations often specify maximum allowable soojusläbilaskvus values for various building components, such as walls, roofs, and windows, to ensure a certain level of energy performance. By understanding and controlling soojusläbilaskvus, designers and builders can create more comfortable and energy-efficient living and working spaces, reducing heating and cooling costs and minimizing environmental impact.