õhulekkesurve

õhulekkesurve, often translated as "air leakage pressure," refers to the pressure difference across a building envelope that is caused by air moving through uncontrolled openings. This leakage occurs due to various factors, including wind, stack effect (temperature-induced air movement), and mechanical ventilation systems.

When air leaks through a building's shell, it carries with it heat, moisture, and pollutants. This can lead to increased energy consumption for heating and cooling as conditioned air escapes and unconditioned air enters. In colder climates, air leakage can cause condensation within wall cavities, potentially leading to mold growth and structural damage. In warmer, humid climates, it can lead to moisture buildup and discomfort.

Measuring and controlling õhulekkesurve is a critical aspect of building science and energy-efficient construction. Blower door tests are commonly used to quantify air leakage. These tests depressurize or over-pressurize a building, revealing the extent of uncontrolled air infiltration and exfiltration. Strategies to reduce air leakage include careful detailing of the building envelope, using airtight materials, and ensuring proper sealing of joints and penetrations.

Understanding and managing õhulekkesurve is essential for creating healthy, comfortable, and energy-efficient indoor environments. It plays a significant role in a building's overall performance and durability.