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

Kód výsledku v 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>

Výsledek na webu

<a href="http://www.nsb2014.se/" target="_blank" >http://www.nsb2014.se/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0091" target="_blank" >ED2.1.00/03.0091: Univerzitní centrum energeticky efektivních budov (UCEEB)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

10th Nordic Symposium on Building Physics

ISBN

978-91-88722-53-9

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

1006-1013

Název nakladatele

Lund University

Místo vydání

Lund

Místo konání akce

Lund

Datum konání akce

15. 6. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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