Beskrivelse

Due to an overall trend towards less heating and more cooling demand in buildings in many European countries over the last couple of decades, passive cooling by night-time ventilation is seen as a promising technique particularly for low-energy buildings. The basic concept involves cooling the building structure overnight in order to provide a heat sink that is available during the occupancy period. Despite the “simplicity” of the method, meticulously developed design solutions are needed in order to deal with the complexity of the involved physical phenomena. The objective of the PhD thesis is: o To improve the building design knowledge in the field of passive cooling o To understand the impact of geometrical and physical parameters etc. on air exchange and cooling effect o To develop an engineering model to be implemented in Building Energy Simulation tools o To demonstrate the application potential of climate responsive elements o To evaluate possibilities and limitations of passive cooling by night-time ventilation in present and future climates In order to reach the objectives of the study a number of research tasks are needed. These will include: o State-of-the-art review of prediction methods and technologies for passive cooling of buildings by night time ventilation o Investigation of possibilities and limitations of passive cooling by night-time ventilation in present and future climates in Europe o Sensitivity analysis of impact of geometrical, physical and air flow parameters on passive cooling effectiveness o Development of engineering model for passive cooling by night-time ventilation o Development of optimal strategies for passive cooling by night-time ventilation
StatusAfsluttet
Effektiv start/slut dato01/09/200531/08/2008

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Cooling
Ventilation
Heat sinks
Air
Sensitivity analysis
Heating