A model of heat and air transfer in a ventilated, rectangular space

This work presents and verifies the model and air transfer in a horizontal, naturally ventilated air cavity that could be under a flat roof or under a building as a crawl space. In this article, this space is represented as a rectangular air channel with a cooled top and heated bottom and walls each...

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Bibliographic Details
Published in:Journal of building physics 2017-01, Vol.40 (4), p.334-345
Main Authors: Olenets, Marianna, Piotrowski, Jerzy Z
Format: Article
Language:English
Subjects:
Airflow
Buildings
Channels
Flat roofs
Holes
Mathematical models
Permissible error
Walls
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Summary:This work presents and verifies the model and air transfer in a horizontal, naturally ventilated air cavity that could be under a flat roof or under a building as a crawl space. In this article, this space is represented as a rectangular air channel with a cooled top and heated bottom and walls each either heated or cooled. Temperature of all wall surfaces varies along the attic space length. The model allows estimating temperatures of air and wall surfaces along the channel for a low velocity of airflow in the channel. The results of calculations were compared with a field experiment and agreed within estimated errors of the model, that is,
ISSN:1744-2591
1744-2583
DOI:10.1177/1744259116641240