Abstract
Portuguese school buildings are generally characterized by an in service thermal discomfort. The refurbishments that the schools have recently undergone, have not fully considered the climatic diversity and the economic reality of the country and, for that reason, there are still some discomfort in these schools. This work studies the Portuguese Brandão schools model (from the 70’s), which comprises about 100 non-refurbished basic schools. A prototype classroom was prepared in a Brandão school, in Porto. The in situ experimental campaign consisted in temperature, relative humidity, CO2 concentration and energy consumption measurements. With this prototype, some studies were carried out regarding the thermal behavior before and after a refurbishment process, by experimental monitoring. The prototype construction has included the improvement of the envelope (roof insulation and solar protection) and of the technical systems (ventilation and heating). The main goal was the assessment of the discomfort in this prototype before and after the refurbishment in free-running conditions or with some intermittent heating strategies. Discomfort indexes have been developed for the assessment of the discomfort. This work presents the prototype thermal performance in pre-existing in service conditions and the improvement in the thermal behavior of the environment after the refurbishment.
Highlights
Portugal is located in southwestern Europe, mostly defined by a temperate Mediterranean climate, with rainy winters and dry and hot summers, it presents a considerable climatic diversity
The monitoring of hygrothermal parameters is done by a Wireless Aptinov system composed by a 3G router with GSM, a GW357-2 gateway, 11 Aptinov WLS-05 dataloggers (T and relative humidity (RH)) and 2 Telaire7001 sensors coupled to 2 Aptinov WLS-07 dataloggers (CO2)
It is important to https://doi.org/10.10 51/matecconf /201928202042 define some strategies for the refurbishment of these basic schools
Summary
Portugal is located in southwestern Europe, mostly defined by a temperate Mediterranean climate, with rainy winters and dry and hot summers, it presents a considerable climatic diversity. The selection of the best intervention measures for a building should consider its climatic situation and the economic reality of the country. Portuguese school buildings are generally characterized by an in service hygrothermal discomfort, due to the poor envelope thermal properties and the lack of resources for paying energy consumption. The so relevant international studies on schools https://doi.org/10.10 51/matecconf /201928202042 energy consumption and potential savings referred in bibliography [2] do not traduce the Portuguese reality. The constructive records of the past describe the existence of typified projects for school buildings replicated throughout the country, without the necessary adaptations to the particular climatic situation. The replication of solutions in refurbishment projects, without taking into account the climatic reality, will have repercussions on the hygrothermal environment inside the classrooms
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