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The present study presents the research on the energy retrofit of the building envelope of 615 social housing that are part of the sustainable construction plans for the public housing stock of Andalusia (southern Spain). The analysis provides a new assessment of the relationship between the air-tightness and the energy demand for air conditioning of dwellings in warm climate. Both magnitudes offer a parallelism in the results, with average values of 21.45% decrease in air changes rate and 21.82% decrease in demand. To this end, during the implementation of interventions, tests of infiltrations have been developed in dwellings. The measured air permeability are used as input in a process of energy modeling under different approaches, differentiating the controlled air leakages (ventilation) and the uncontrolled or unnecessary ones (infiltration). The results show the behavior of buildings after refurbishment and energy savings by air leakage can be quantified in each case.

informes de la construcción

Influencia de las infiltraciones en la rehabilitación energética de la envolvente. El caso del plan de actuaciones en el parque público residencial de Andalucía