Moisture problems in a narrow gap under the suspended floor: A case study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F14%3A00224447" target="_blank" >RIV/68407700:21720/14:00224447 - isvavai.cz</a>
Result on the web
<a href="http://www.nsb2014.se/" target="_blank" >http://www.nsb2014.se/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Moisture problems in a narrow gap under the suspended floor: A case study
Original language description
This paper presents and explains moisture problems observed in the sub-floor space of a timber-framed kindergarten in the Central European climate. The floor structure (36 by 52 m) is suspended 0.27 m above the uncovered ground surface. The sub-floor ismechanically ventilated in one direction. Here, relative humidity constantly exceeds 95 % irrespective of the season. Furthermore, visual inspections revealed condensation and mould growth in the inlet area. A two-dimensional dynamic HAM model was written in Matlab in order to describe the sub-floor?s behaviour and evaluate possible actions. The model was validated using measured data. The results show two principal moisture sources: (1) evaporation from the ground and (2) ventilation by the outdoor air. The ground source is active throughout the year and causes gradual increase in relative humidity in the direction of the flow. The outdoor air brings in excessive moisture from spring to autumn and causes condensation on the floor struc
Czech name
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Czech description
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Project
<a href="/en/project/ED2.1.00%2F03.0091" target="_blank" >ED2.1.00/03.0091: University center for energy Efficient buildings (UCEEB)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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