Lab_6 2_ES Solar Radiation_Assisi Street (Rome)_GiacomoNicolò

Before studying solar radiation I analyzed again my building in order to find out all the architectural elements which could affect the results. In this case the only relevant ones are the balconies, which characterize three of the six façades, and the cornice at the top of it, as you could have seen from the photos of the first exercise, since the building shape is very simple and compact. So I added some details to the previous volume together with the base to look over the solar radiation on the ground as well.  I examined the results of the winter period (21-12-2014/21-03-2015) and the summer one (21-06-2014/22-09-2014). As I analyzed in the first study, the building shows two completely different situation: the south side looking over Assisi and Tuscolana street is illuminated and warm instead of the other ones which are colder and in shadow without huge differences between winter and summer.

In winter the highest radiation is 116.9 kWh/mq reached on the roof (in yellow), but also the last floors of the south-east and south-west façades receive a quite high solar radiation (in orange/red). Instead the lower floors looking at Assisi street and all the north façades are very cold because in shadow (in blue/purple).

In summer the highest radiation reaches 410.7 kWh/mq always on the roof but even all the south-west façade is extremely irradiated (yellow and orange). On the contrary the south-east façade is less exposed and cooler (from blue to red) and the north façades keep being completely blue.

Even though the apartments having rooms looking at Tuscolana street are the hottest ones, the air conditioning could be avoided by creating natural ventilation thanks to the presence of rooms which look at north. The north façades, due to their position, aren’t exposed to the sun and so humidity is one of the cause of some phenomena like the deterioration of the external parget.