B i o c l i m a t i c S u n s p a c e
503
-critical survey and classification of passive systems having a significant formal impact
on the shape of the architectural body (sunspace, solar shielding, ventilation shaft…)
used in the European and Italian case studies.
-the classification of these systems using information sheets drawn up using an analysis
method aimed at highlighting the relations among the system and the building, at
identifying the different types of system available, at setting the morphological (climatic,
environmental and functional) variables having an effect on the system itself and at
determining the strategies for applying the system with respect to the building (at the
level of shell and in the possible integration with other energy systems);
-construction of a theoretical model of bioclimatic sunspace in multi-storey residential
buildings; in this connection, among the various possible configurations of the sunspace
in relation to the building housing it, it was decided to limit the study to two types:
enclosed sunspace and abutting sunspace. In both cases, we have a radiant exchange
model of bioclimatic sunspace, that is, a model with a thermal mass separated from the
space to be heated. In the model, each of the two types varies in size according to
specific proportions related to the depth, length of the glazed surface and height of the
sunspace; the variation in size has given rise to several case studies for each type,
respectively for duplex and simplex dwellings;
- computation of the thermal gain of the theoretical model using the thermal model by
means of Method 5000 - software SERRA 5000 (Methode 5000. P. Claux, J.P. Franca,
R. Gilles, A. Pesso, A. Pouget, M.Raoust in European Passive Solar Handbook,
Commission of the European Communities Directorate General XII for Science,
Research and Development, Bruxelles 1986).
- ordering the energy data into a spreadsheet where they are correlated with the formal
characteristics of the sunspace;
- processing of graphs suitable for identifying possible relations and links that exist
between the energy efficiency of the bioclimatic sunspace and its shape;
- analysis of graphs and inferences: expression of dimensional ratios referring to the
system, percentage system volume-dwelling volume ratios, duplex and simplex formal
ratios;
Figure 1: Relationship between sunspace efficiency (Kwh/m
2
year) and Volumetric Ratio Rv (m
3
).
