Hygrothermal performance of wall segment under conditions allowing ice forming processes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00334529" target="_blank" >RIV/68407700:21110/19:00334529 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2019/6.2/S26.020" target="_blank" >http://dx.doi.org/10.5593/sgem2019/6.2/S26.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2019/6.2/S26.020" target="_blank" >10.5593/sgem2019/6.2/S26.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hygrothermal performance of wall segment under conditions allowing ice forming processes

Popis výsledku v původním jazyce

This paper deals with validation of an enhanced mathematical model for description of coupled heat and moisture transport which is able to model ice forming processes. This phenomenon is usually neglected because of computational difficulties even if it has a significant influence on heat and moisture transport. For the sake of model validation, data gathered by means of semi-scale experiment was used, analyzing a hygrothermal performance of a real building assembly – an external wall. The wall was exposed to dynamic climatic conditions of Olomouc in form of test reference year between January and March, when the temperature drops often below zero. Assuming the water/ice phase change, the hygrothermal performance was determined experimentally as well as computationally and the data was compared. The low root mean square error (1.141 °C and 5.699 %RH) showed that the mathematical model provides precise results and can be applied for building energy calculations in cold region climates.

Název v anglickém jazyce

Hygrothermal performance of wall segment under conditions allowing ice forming processes

Popis výsledku anglicky

This paper deals with validation of an enhanced mathematical model for description of coupled heat and moisture transport which is able to model ice forming processes. This phenomenon is usually neglected because of computational difficulties even if it has a significant influence on heat and moisture transport. For the sake of model validation, data gathered by means of semi-scale experiment was used, analyzing a hygrothermal performance of a real building assembly – an external wall. The wall was exposed to dynamic climatic conditions of Olomouc in form of test reference year between January and March, when the temperature drops often below zero. Assuming the water/ice phase change, the hygrothermal performance was determined experimentally as well as computationally and the data was compared. The low root mean square error (1.141 °C and 5.699 %RH) showed that the mathematical model provides precise results and can be applied for building energy calculations in cold region climates.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-01365S" target="_blank" >GA17-01365S: Modelování a experimentální ověření vlivu zmrazovacích cyklů na degradaci porézních stavebních materiálů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

19th International Multidisciplinary Scientific Geoconference SGEM 2019

ISBN

978-619-7408-89-8

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

155-162

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

30. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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