Investigation of thermal and airflow conditions near glazed facades using particle image velocimetry and cfd simulation--eliminating the need for ... An article from: ASHRAE Transactions
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Book Details
ISBN / ASIN
B002EPNCLI
ISBN-13
978B002EPNCL0
Marketplace
France 🇫🇷
Description
This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2009. The length of the article is 8571 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: In cold climates, thermal discomfort usually occurs close to fenestration during the winter. Secondary perimeter heating systems are often employed near windows to improve thermal comfort conditions. The first part of this paper investigates and compares the performance of three different perimeter heating systems and presents air velocity and temperature gradients near a glazed facade with different perimeter heating configurations (baseboard heaters, radiant ceiling panels, and heated windows). For the first time, air velocity fields on a full-scale facade section were measured with a particle image velocimetry (PIV) system mounted on a traverse. The experimental results were used to validate a three-dimensional CFD model, which was later used in conjunction with further experiments to explore the possibility of employing a high-performance envelope in order to eliminate the need for secondary perimeter heating systems (e.g., baseboard heaters). The results showed that the main HVAC system may be used to provide all necessary heating in the perimeter--and ensure thermal comfort--even under extreme winter conditions, provided that appropriate glazing properties and diffuser positioning are selected.
Citation Details
Title: Investigation of thermal and airflow conditions near glazed facades using particle image velocimetry and cfd simulation--eliminating the need for secondary perimeter heating systems.(Report)
Author: Athanassios Tzempelikos
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 1 Page: 523(15)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: In cold climates, thermal discomfort usually occurs close to fenestration during the winter. Secondary perimeter heating systems are often employed near windows to improve thermal comfort conditions. The first part of this paper investigates and compares the performance of three different perimeter heating systems and presents air velocity and temperature gradients near a glazed facade with different perimeter heating configurations (baseboard heaters, radiant ceiling panels, and heated windows). For the first time, air velocity fields on a full-scale facade section were measured with a particle image velocimetry (PIV) system mounted on a traverse. The experimental results were used to validate a three-dimensional CFD model, which was later used in conjunction with further experiments to explore the possibility of employing a high-performance envelope in order to eliminate the need for secondary perimeter heating systems (e.g., baseboard heaters). The results showed that the main HVAC system may be used to provide all necessary heating in the perimeter--and ensure thermal comfort--even under extreme winter conditions, provided that appropriate glazing properties and diffuser positioning are selected.
Citation Details
Title: Investigation of thermal and airflow conditions near glazed facades using particle image velocimetry and cfd simulation--eliminating the need for secondary perimeter heating systems.(Report)
Author: Athanassios Tzempelikos
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 1 Page: 523(15)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
