ZEMCH 2015 - International Conference Proceedings | Page 237

during this season, indoor temperatures exceeded outdoor temperatures. The average maximum
temperature was 32.07°C and the average minimum was 23.42°C. Week five was the warmest week
in this season where the average maximum temperature was 34.39°C and the average minimum
was 26.18°C.

Figure 11: Outdoor and indoor air temperatures for 12 houses common rooms and bedrooms over the
warm season

Figure 12 shows the indoor relative humidity levels from the monitored 12 houses against the
comfort range (RH 30%< <80%) over the warm season. This period presented the maximum outdoor relative humidity of 90%, the minimum of 19% and the average relative humidity of 56%. In
comparison to the outdoor, the indoor presented lower amplitudes in the fluctuations, the average maximum indoor relative humidity of the 24 rooms monitored was 71%, the average indoor
was 23%, and the total average was 48%. In comparison to the cool season, indoor relative humidity in this season presented closer and more consistent relation with the outdoor relative humidity. In this case, it is suggested that this was influenced by the operation of openings allowing
greater natural ventilation, and therefore, following a very similar pattern to the outdoor relative
humidity. Most importantly, this figure (Fig.12) highlights that although indoor relative humidity
levels vary with the time, these levels were most of the time within the comfort range (RH 30%<
<80%). The 24 monitored rooms were 97% (same as the cool season) of the time inside this range;
therefore, no further analysis was required in terms of relative humidity during this season.

Thermal performance of industrialised housing construction in Centra

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