Parametrical analysis for the evaluation of the technical and economic effectiveness of different refurbishment measures
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One of the major aims in building energy refurbishment is to compare different solutions in order to achieve requirements of the law or improve the energy efficiency, but the priority of interventions and their effectiveness can be affected by the initial situation (weather conditions, geometry and shape of building, entity of transparent surfaces, and so on). In the present paper a reference building model has been simulated in order to calculate the primary energy need for heating and DHW production. The initial configuration of the building has been varied concerning the windows' size and orientation, the S/V ratio, the materials of the opaque envelope and the location. A total of 54 different reference buildings were obtained from the combination of the above alternatives. About 360 refurbishment packages have been analyzed for each reference building combining improvement measures on the opaque envelope and the transparent components, on the ventilation losses, and on the energy production system. The improvement packages have been analyzed from an economic and energetic perspective in order to draw up a priority list of investments and retrofit measurements. © 2013 by Bozen-Bolzano University Press.