Calculation of airflow rate with displacement ventilation in dynamic conditions

Natalia Lastovets*, Risto Kosonen, Juha Jokisalo

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

Abstrakti

Design of displacement ventilation (DV) is usually based on a heat balance method when overheating is the primary indoor climate concern. Various models for calculating airflow rate have been developed for several decades. Commonly used models are based only on steady-state models. However, in practical applications, the performance of DV depends on potentially dynamic parameters, such as strength, type and location of heat gains and changing heat gain schedule. Besides, thermal mass affects dynamically changing room air temperature. The paper presents case studies of dynamic DV design in a lecture room. The difference in the designed airflow rate was studied with various models in both dynamic and steady-state conditions. The presented dynamic DV model demonstrated a capability to take into account the combination of dynamic parameters in typical applications of DV. In the case analysed, the airflow rate calculated with the dynamic model is significantly lower than the one calculated with the steady-state models
AlkuperäiskieliEnglanti
OtsikkoBuildSIM-Nordic 2020 Selected papers
Alaotsikko International Conference Organised by IBPSA-Nordic, 13th–14th October 2020, OsloMet
JulkaisupaikkaOslo, Norway
Luku2
Sivut49-55
Sivumäärä7
Vuosikerta5
ISBN (elektroninen)978-82-536-1679-7
TilaJulkaistu - 12 lokakuuta 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaBuildSim-Nordic - Online, Oslo, Norja
Kesto: 13 lokakuuta 202014 lokakuuta 2020
https://buildsimnordic2020.ibpsa-nordic.org/

Julkaisusarja

NimiSINTEF proceedings
Numero5
ISSN (elektroninen)2387-4295

Conference

ConferenceBuildSim-Nordic
LyhennettäBSN
MaaNorja
KaupunkiOslo
Ajanjakso13/10/202014/10/2020
www-osoite

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