Abstract
Study of Night Ventilation Efficiency in Urban Environment: Technical and Legal AspectsNight Ventilation is a critical technique of passive cooling, as it combines a significant decrease of cooling demand and improvement of thermal comfort and indoor air quality.The aim of the present paper is to study the technical and legal aspects of night ventilation in urban climatic conditions. The technical part examines the efficiency of night ventilation techniques for urban residential buildings. Moreover, the influence of urban heat island on the night ventilation effectiveness is studied. Urban heat provokes the degradation of urban air quality and causes changes in the urban area microclimate which reduce the night ventilation effectiveness as a passive cooling technique. Moreover, this paper studies the legal framework of energy efficiency in buildings and pinpoints the institutional deficiencies of the existing regulation regarding energy efficiency and passive cooling techniques
Highlights
AND STATE OF ARTIn Southern EU countries the necessity for cooling has been increased especially during the summer period
The technical part examines the impact of night ventilation on the cooling demand and indoor comfort of the urban residential buildings by taking into account the different urban microclimatic conditions and the urban heat island phenomenon
Night ventilation is designed to start at 8.00 pm, continue all night and end at 8.00 am
Summary
In Southern EU countries the necessity for cooling has been increased especially during the summer period. The urban microclimate and the geomorphological structure of an area have a strong impact on the application of the various passive cooling techniques for buildings. The primary aim is saving final energy or any related parameter (primary energy, CO2 emissions or energy costs) without compromising thermal comfort [19, 20] To this end, the aim of the present paper is to examine the technical and legal aspects of night ventilation in the urban microclimate. The technical part examines the impact of night ventilation on the cooling demand and indoor comfort of the urban residential buildings by taking into account the different urban microclimatic conditions and the urban heat island phenomenon.
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