The Solar Wall in the Italian Climates
Commenced in January 2007
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Edition: International
Paper Count: 32771
The Solar Wall in the Italian Climates

Authors: F. Stazi, C. Di Perna, C. Filiaci, A. Stazi

Abstract:

Passive systems were born with the purpose of the greatest exploitation of solar energy in cold climates and high altitudes. They spread themselves until the 80-s all over the world without any attention to the specific climate and the summer behavior; this caused the deactivation of the systems due to a series of problems connected to the summer overheating, the complex management and the rising of the dust. Until today the European regulation limits only the winter consumptions without any attention to the summer behavior but, the recent European EN 15251 underlines the relevance of the indoor comfort, and the necessity of the analytic studies validation by monitoring case studies. In the porpose paper we demonstrate that the solar wall is an efficient system both from thermal comfort and energy saving point of view and it is the most suitable for our temperate climates because it can be used as a passive cooling sistem too. In particular the paper present an experimental and numerical analisys carried out on a case study with nine different solar passive systems in Ancona, Italy. We carried out a detailed study of the lodging provided by the solar wall by the monitoring and the evaluation of the indoor conditions. Analyzing the monitored data, on the base of recognized models of comfort (ISO, ASHRAE, Givoni-s BBCC), is emerged that the solar wall has an optimal behavior in the middle seasons. In winter phase this passive system gives more advantages in terms of energy consumptions than the other systems, because it gives greater heat gain and therefore smaller consumptions. In summer, when outside air temperature return in the mean seasonal value, the indoor comfort is optimal thanks to an efficient transversal ventilation activated from the same wall.

Keywords: Building envelope, energy saving, passive solarwall, thermal comfort.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062734

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References:


[1] F. Stazi - The solar house of Ancona 20 years after: reflection on project and use - Proceedings of "World Congress on Housing Sustainability of the Housing Projects", XXXII IAHS, 21-25 September 2004, Trento.
[2] F. Stazi - A solar prototype in a Mediterranean climate: reflections on project, use, results of the monitoring activities, calculations- Proceedings of the World Renewable Energy Congress (Innovation in Europe; Elsevier Ltd.) WREC 2005, 22-27 May 2005, Aberdeen, Scotland.
[3] F. Stazi, C. Di Perna, L. Del Prete; A. Stazi - "Comparison between monitoring and simulating. An important step forward for model reliability"- Building Simulation 2007- 10th International Building Performance Simulation Association Conference.IBPSA 2007 3-6 September 2007, Beijing, China.
[4] G. Gan, "A parametric study of Trombe wall for passive cooling of buildings", Energy and Buildings 27, 1998, pp. 37-43.
[5] B. Givoni,"Climate consideration in building and urban design", New York, Van Nostrand Reinhold, 1998, pp. 464.
[6] J Khedari, S. Kaewruang, N. Pratinthong, J. Hirunlabh, "Natural ventilation of houses by a Trombe wall under the climatic conditions in Thailand", International Journal of Ambeint Energy 20, april 1999, pp. 85-93.
[7] P. O. Fanger, J. Toftum, "Extension of the PMV model to non-airconditioned buildings in warm climates", Energy and Buildings 34, 2002, pp. 533-536.
[8] American Society, of Heating, Refrigerating, Air-conditioning, "ASHRAE Handbook - Fundamentals - SI edition", New York, 1989.
[9] American Society, of Heating, Refrigerating, Air-conditioning, "ASHRAE Handbook - Fundamentals - SI edition", New York, 2005.
[10] International Organization for Standardization, "ISO 7726:1998 - Ergonomics of the thermal environment - Instruments for measuring physical quantities", Genève, 1998.
[11] International Organization for Standardization, "ISO 7730:1994 - Determination of the PMV and PPD indices and specification of the conditions for thermal comfort", Genève, 1994.
[12] European committee for standardization, "EN 15251:2007 - Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics", Brussels, 2005.