Calculation of vertical temperature gradient with commonly used simplified models in rooms with displacement ventilation

Natalia Lastovets, Risto Kosonen, Panu Mustakallio

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Abstract

To estimate the vertical temperature stratification in rooms with displacement ventilation, several simplified nodal models were developed and implemented in the various building simulation software. However, the temperature gradient in buildings is highly dependent on a variety of factors, such as different flow elements and the location of heat loads. Inaccurate estimation can result in 2-3 °C temperature difference compared to the target design values, which could lead to poor thermal comfort in the occupied zone. In the present study, measurement data was compared with the commonly used models and novel four-nodal model. The differences between the measurements and simulations were indicated for the occupied zone temperatures. The four-nodal model provides an accurate prediction for all types and combinations of heat loads.
Original languageEnglish
Title of host publicationSisäilmastoseminaari 2018: Messukeskus, Helsinki 15.3.2018
EditorsJorma Säteri, Mervi Ahola
PublisherSIY SISÄILMATIETO OY
Pages109-114
ISBN (Electronic)978-952-5236-46-0
Publication statusPublished - 2018
MoE publication typeD3 Professional conference proceedings
EventSisäilmastoseminaari - Helsinki, Finland
Duration: 15 Mar 201815 Mar 2018
Conference number: 33

Publication series

NameSIY Raportti
PublisherSisäilmayhdistys ry
Number36
ISSN (Print)1237-1866

Seminar

SeminarSisäilmastoseminaari
CountryFinland
CityHelsinki
Period15/03/201815/03/2018

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