Solving problem of airflow in the open air space in double pitched roofs of passive objects with concrete cover

The paper deals with air flow in open air gap in pitched roofs with folded roofing. The sloping roof is thermally insulated to the passive standard. Double-skinned roofs work with the drainage of moisture from the air gap based on the difference in water vapor pressure that is generated by the warmi...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-11, Vol.972 (1), p.12034
Main Authors: Plachy, J, Šál, J
Format: Article
Language:English
Subjects:
Air flow
Air gaps
Moisture removal
Pitched roofs
Roofing
Thermal insulation
Vapor pressure
Water vapor
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The paper deals with air flow in open air gap in pitched roofs with folded roofing. The sloping roof is thermally insulated to the passive standard. Double-skinned roofs work with the drainage of moisture from the air gap based on the difference in water vapor pressure that is generated by the warming of the air gap. Moisture removal is suppressed due to the large thickness of the thermal insulation. The paper compares experimentally measured values with values obtained by calculation using the appropriate computer software. For experimental verification of the air flow, a model of the roof cladding was constructed, on which air flow in the air gap was verified. There was no air flow on the roof model. In the theoretical calculation the flow occurred.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/972/1/012034