A simple model to study ventilated facades energy performance

The aim of this work is to provide a simple and useful tool to study energy performance of different ventilated facades typology. To simulate the studied sample, a steady state energy balance has been applied to a control volume which basic equations have been solved by a finite element code with an...

Full description

Saved in:
Bibliographic Details
Published in:Energy and buildings 2002-06, Vol.34 (5), p.469-475
Main Author: Balocco, Carla
Format: Article
Language:English
Subjects:
Applied sciences
Building technical equipments
Buildings
Buildings. Public works
Computation methods. Tables. Charts
Energy management and energy conservation in building
Environmental engineering
Exact sciences and technology
External envelopes
Heat transfer
Solar cooling effect
Structural analysis. Stresses
Ventilated facade
Wall. Partition
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this work is to provide a simple and useful tool to study energy performance of different ventilated facades typology. To simulate the studied sample, a steady state energy balance has been applied to a control volume which basic equations have been solved by a finite element code with an iterative procedure. For each step Δ x of the channel height, the different surface and air mass temperatures are calculated. The mass flow rate is evaluated as overall natural draught. Effects due to different cavity widths of the ventilation channel are investigated for winter and summer season with opened and closed ends. Comparisons show that it is possible to obtain a sensible solar cooling effect during summer, when the air cavity width of the chimney is wider than 7 cm. For wider cavities the cooling effect becomes stable. In winter, thermal insulation, provided by the closed ventilated facade is very important.
ISSN:0378-7788
DOI:10.1016/S0378-7788(01)00130-X