THERMAL SCIENCE

International Scientific Journal

Balázs András-Tövissi

,

László Kajtár

,

József Nyers

A NEW METHOD FOR EVALUATING THE JOINT EFFECT OF DRAUGHT AND THE HOT CEILING

ABSTRACT
For buildings with ceiling heating and mechanical ventilation, it is extremely important to know the combined effect of the draught and the radiant thermal asymmetry caused by a warm ceiling. There is plenty of literature offering separate descriptions of the dissatisfaction caused by draught and warm ceilings, but research on the combined effect of these two local discomfort factors is incomplete. In order to fill in this gap, human subject measurements were conducted involving 20 subjects, 10 men, and 10 women, who were asked to complete questionnaires on thermal sensation, while being exposed to a random combination of five asymmetries and two draughts. Analyzing the results obtained this way made it possible to evaluate the combined effect of the draught and radiant thermal asymmetry on thermal comfort. The most important outcome of the research is the mathematical description of the expected dissatisfaction rate and the presentation of the differences depending on gender.
KEYWORDS
thermal comfort, radiant thermal asymmetry, draught, joint effect, human subject measurement
PAPER SUBMITTED: 2019-12-11
PAPER REVISED: 2020-02-09
PAPER ACCEPTED: 2020-02-14
PUBLISHED ONLINE: 2020-03-08
DOI REFERENCE: https://doi.org/10.2298/TSCI191211102A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 3, PAGES [2025 - 2035]
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A new method for evaluating the joint effect of draught and the hot ceiling

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence