Fuktanalys i en kontorsbyggnad. En studie om hur befuktning av inomhusluften påverkar den relativa fuktigheten i ytterväggen

Sammanfattning: Low levels of relative humidity indoor has a negative effect on the health of people. Most commonly appears dryness symptoms in eyes, nose, throat, and skin. Humidification of the air through ventilation in dry environments could be a solution, though it must be analyzed if the extra moisture can cause any problems. The purpose is to study how the outer wall in the building will react to the elevated relative humidity inside. Is it possible to increase the relative humidity, how much extra moisture can be accepted, and how do moisture buffering in the materials affect the process is questions that will be studied. The thesis is based on calculations done in WUFI+. The modeled building is an office located in Umeå, Sweden. Humidification of the indoor environment can be accepted if the total moisture supply is below 1100 g/h between 08.00 and 16.00 during a winter period for the analyzed office building. Cold bridges are neglected in this study, which should also be taken into consideration.