Abstract

Passive cooling techniques and energy-efficient building envelope play a fundamental role in enhancing building thermal behavior and thermal comfort in Mediterranean climate. Controlled natural ventilation accounts for an appropriate strategy to achieve summer thermal comfort in residential buildings and reduce dependence on non-renewable resources. The aim of this research effort was to develop and design a natural ventilation system with combined solar chimney and sunrooms on different levels of apartment buildings. The system under study, that can be implemented in both new buildings and in refurbishment projects, seems to be an appropriate solution for night cooling in climate conditions characterized by significant daily thermal swings and low nighttime wind velocity. In the present paper the concept of the natural ventilation system is presented together with the results of the numerical simulations performed in the system design phase. The system in question has been designed for energy retrofitting purposes of an apartment building located in Putignano (40°50’57”N 17°07’21”E, h=372m a.s.l., Heating Degree Days=1716). The Dynamic Thermal Modelling and Computational Fluid Dynamics simulations performed have shown improvements in terms of summer ventilation efficiency and thermal comfort related to the system proposed: in that system solar chimney has been found to enhance natural ventilation during the night and when the inside and outside temperatures are very close to each other. The numerical simulations performed have been focused on the following: sizing of the solar chimney, definition of critical boundary conditions (e.g. due to different users behaviors), resulting technical solutions and operating strategies.

Autore Pugliese

• Iannone Francesco

Tutti gli autori

• IANNONE F , GORGOGLIONE A

Titolo volume/Rivista

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Anno di pubblicazione

2013

ISSN

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ISBN

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Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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