Fuktberäkning av vindar och jämförelse med mögelprover

• Main Author: Cukur, Armin
• Format: Other/Unknown Material
• Language: Swedish
• Published: Lunds universitet/LTH Ingenjörshögskolan vid Campus Helsingborg 2017
• Subjects: vindkonstruktioner; simulering; wufi; mögel; mrd; fukt; klimatdata; snö; material; kutterspån; Technology and Engineering; Gällivare; Malmberget
• Online Access: http://lup.lub.lu.se/student-papers/record/8905822

The purpose of this thesis was to study how well the MRD-model (Mould Resistance Design) co-using the hygrothermal calculation software WUFI Pro 6 can predict mould growth in roof structures within long periods of time. The study was done on eleven roof structures situated at Malmberget within Gällivare Municipality between the years of 1961 – 2012 in WUFI Pro 6 (the structures were built around 1960 – 1965). In association with previous studies sampling for mould analysis of the roof structures was done whose measurements served as a basis for the thesis. The study began by gathering information to determine the design of the structures and determine the climate outdoors in Malmberget and indoors before the simulations in WUFI. It was also evaluated how the structures handle varying conditions by varying miscellaneous parameters within WUFI. The main conditions that were evaluated was snow on the roof, increased humidity in the indoor climate, increased seepage of moisture from the indoors and increased ventilation rates in the attics. Comparing the measurements and the results from the simulations co-using the MRD-model there were great differences regarding the mould growth. The measurements were clearly showing mould growth, but the simulations were showing very little mould growth. No conclusions were made regarding the reliability of the collected climate data for the simulations due to the differences between the measurements and the simulations. The main reasons for the differences were probably the method for simulating seepage of moisture from indoors and the complications during the simulations in WUFI because the simulations showed contradicting results as to what was expected. There are great opportunities for improvement by doing oriented studies regarding simulating snow on roof structures, creating climate files, revise and develop methods for simulating for example seepage of moisture from the indoor climate etc.