2.1. Summer measurements

During most of the monitoring periods the exterior temperatures were below 20°C, approximately 35%-45% of the time. The monitoring periods corresponding to measurements performed in housing units 8, 9 and 10 showed temperatures below 20°C during 25% of the time, and the ones corresponding to 6 and 2 during a longer period of time (45%-50% of the time).

In the majority of the monitoring periods the exterior temperatures were between 20°C and 25°C (comfort) approximately 40% of the time; between 25°C and 27°C (near to comfort) approximately 9% of the time, and between 27°C and 31°C approximately 10% of the time. The periods corresponding to housing units 3, 8, 9 and 10 presented exterior temperatures between 27°C and 31°C during the longest periods of time (11% -16% of the time); and the ones corresponding to housing units 4 and 11 during the least time (3% — 6% of the time). Therefore, in a general way the exterior temperatures were below 25°C during the different monitoring periods in close to 70%- 85% of the time. Thus, the other temperatures, above 25°C, are distributed in the remaining 15%- 35%. For the Fig. 6 it is possible to conclude that none of the monitored compartments during the summer 2007 months showed temperatures below 20°C.

The compartments that showed temperatures between 20°C and 25°C were mainly the ones with glazing areas oriented practically east, north and west (on average 6%-9% of the time). The compartment of dwelling 1, with glazing areas practically South+East, also showed temperatures between 20°C and 25°C in close to 13% of the time, while a compartment practically to the north in the same dwelling showed temperatures in these values approximately 41% of the time. Some compartments presented temperatures between 25°C and 27°C most of the time. These were those with glazing areas oriented practically to the north. Dwelling 10 presented temperatures within these values practically 85%-95% of the time.

Is noted that the housing units (7, 8, 9, 10 and 11) of the Building Alcantara-Rio, the only that have exterior shading systems of the blind type (beside a horizontal shading) most of the time showed temperatures between 25°C-27°C and 27°C-29°C, 92%-100% of the time. Being that the compartments with glazing areas to the: South presented temperatures between 27°C-29°C approximately 87% of the time; north showed temperatures 25°C-27°C approximately 90% of the time; west presented temperatures of 27°C-29°C approximately 35% of the time and temperatures of 25°C-27°C approximately 60% of the time.

The monitored housing units in buildings Pertejo (2, 3, 4, 5 and 6) and Navitejo (living room) without exterior shading presented temperatures practically distributed between 25°C and >31°C. The compartments with glazing areas practically east showed temperatures above 27°C approximately 67% of the time. Housing units 2 and 3 presented temperatures above 27°C in approximately 75%-95% of the time, with dwelling 2 presenting temperatures above 29°C over 40% of the time. In Fig. 7 refers to the mean temperature values and it was concluded that:

Mean of the mean temperatures: were above 25°C for all the monitored compartments with respective monitoring periods, being that for the majority of these it was approximately 27°C. In some studied compartments with glazing areas practically to the south (South, SSE, SSW) the mean temperature was close to 28°C. The studied compartments with glazing areas practically to the north (North, NNE) were the ones showing lower values of the mean temperature, close to 25,5 °C.

Mean of the maximum temperatures: for the different compartments in the respective monitoring periods were close to 0,5°C to 0,9°C higher than the mean temperature. Therefore, for most of the monitored compartments the average of the maximums was approximately 28°C.

Mean of the minimum temperatures: were close to or higher than 25°C for all the housing units in the respective monitoring periods. The average of the minimum temperatures was close to 27°C for the compartments with glazing areas practically to the south, while for the compartments with glazing areas practically east and west was approximately 26°C and for those with glazing areas practically to the north was approximately 25°C.

The exterior thermal amplitude varied practically between 15°C and 25°C in the different monitoring periods. The greatest external amplitude was obtained during the measurements performed in dwelling 1 (23°C), while the lowest was obtained during the measurements performed in dwelling 4 (10°C).

The greatest interior thermal amplitudes were obtained during the measurements performed in the compartments that kept the windows open during a good part of the time, even during daytime, like: the compartments in dwelling 5 (east), living room of dwelling 8 (west) and the bedroom in dwelling 4. Generally, the interior thermal amplitude for most of the compartments was of approximately equal to 5°C. Most compartments of the housing units 7, 8, 9, 10 and 11 present low thermal amplitude values, on average 3,5°C. These flats belong to a set of buildings that have exterior solar blind-type protections that permit greater flexibility, control and adaptation to the exterior conditions.