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Title: Frost damage of roof tiles: A study on moisture boundary conditions
Authors: Iba, Chiemi  kyouindb  KAKEN_id  orcid (unconfirmed)
Ueda, Ayumi
Hokoi, Shuichi
Author's alias: 伊庭, 千恵美
植田, あゆ美
鉾井, 修一
Keywords: Frost damage
Roof tile
Moisture boundary condition
Air layer
Ventilation rate
Issue Date: Nov-2015
Publisher: Elsevier Ltd
Journal title: Energy Procedia
Volume: 78
Start page: 2530
End page: 2535
Abstract: Freeze-thaw cycles are the most serious cause of roof tile deterioration; thus, it is important to know the temperature and moisture distributions in tile materials for protection against frost damage. This study focused on moisture boundary conditions for air layers under the tile. Temperature and humidity were measured using model structures with different types of roof tiles. The results showed that the temperatures around the roof were strongly influenced by solar and longwave radiation, and the humidity in the air layer was close to the outdoor. The ventilation rate between the outdoor and the air layer was estimated by numerical modelling based on the measured results.
Rights: © 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license(
DOI(Published Version): 10.1016/j.egypro.2015.11.263
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