Solar shading devices can significantly improve thermal comfort and reduce cooling loads and potential glare problems in highly glazed buildings. This paper describes results from an extensive measurement program that started in 1997, covering external shading devices, products placed between two panes (interpane), and internal shading devices. Measurements of the total solar energy transmittance (g-value) have been performed using a double hot-box arrangement placed in a real climate.
Evidence suggests that a significant number of large highly-glazed spaces have major design flaws that lead to energy wastage and discomfort. Provision to control solar gains are generally insufficient in these buildings, which can lead to excessively high temperatures during the summer. Besides, the solutions implemented to overcome these issues usually have a high energy cost, whereas passive techniques may well limit these problems. This paper deals with design issues related to solar protections.
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