The chapter focuses on the insulation levels of vertical opaque closures in order to suggest their optimal definition according to local climatic characteristics for energy retrofitting and new construction. The choice of thermal insulation requirements is, at present, mainly focused on the containment of winter energy needs, without considering potential counter effects in the summer season. Moreover, this choice, in line with bioclimatic principles of coldest climates, does not always fit Mediterranean bioregionalisms. The contribution studies this peculiarity, by comparing the potential reduction in energy requirements on an annual basis (heating and cooling), when the level of thermal insulation varies, with and without controlled natural ventilation in summer, in different Italian locations. A methodology, based on a parametric analysis of data produced by dynamic energy simulations of a typical residential unit is proposed in order to suggest early-design strategies as regards the thermal performance of the building envelope. Furthermore, the analysis includes the study of the resilience of this indicator with respect to the potential effect of climate change based on scenarios defined in the IPCC framework (SRES A1B - close to the RCP 6.0).

Optimisation of envelope insulation levels and resilience to climate changes / Ottimizzazione dei livelli di isolamento e loro resilienza rispetto al cambiamento climatico / Chiesa, Giacomo - In: Sustainable technologies for the enhancement of the natural landscape and of the built environment / P. De Joanna, A. Passaro. - STAMPA. - Napoli : Luciano Editore, 2019. - ISBN 978-88-6026-254-7. - pp. 339-372

Optimisation of envelope insulation levels and resilience to climate changes / Ottimizzazione dei livelli di isolamento e loro resilienza rispetto al cambiamento climatico

Giacomo Chiesa
2019

Abstract

The chapter focuses on the insulation levels of vertical opaque closures in order to suggest their optimal definition according to local climatic characteristics for energy retrofitting and new construction. The choice of thermal insulation requirements is, at present, mainly focused on the containment of winter energy needs, without considering potential counter effects in the summer season. Moreover, this choice, in line with bioclimatic principles of coldest climates, does not always fit Mediterranean bioregionalisms. The contribution studies this peculiarity, by comparing the potential reduction in energy requirements on an annual basis (heating and cooling), when the level of thermal insulation varies, with and without controlled natural ventilation in summer, in different Italian locations. A methodology, based on a parametric analysis of data produced by dynamic energy simulations of a typical residential unit is proposed in order to suggest early-design strategies as regards the thermal performance of the building envelope. Furthermore, the analysis includes the study of the resilience of this indicator with respect to the potential effect of climate change based on scenarios defined in the IPCC framework (SRES A1B - close to the RCP 6.0).
2019
978-88-6026-254-7
Sustainable technologies for the enhancement of the natural landscape and of the built environment
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2776896
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