Decor : Passive construction guarantees optimal comfort conditions in schools and facilities
There are many hours that students spend in class each day, which means that it is necessary to create the best environment for them, although this does not really happen. According to a recent study carried out by the Passivhaus Building Platform and the University of Burgos, it is observed that 84% of the teaching time, classrooms fail in terms of ambient temperature, relative humidity and CO2 levels. This has negative consequences for the school performance of students and teachers.
So that CO2 does not increase, many schools have chosen to teach classes with the windows open to ventilate, but with the arrival of winter, this poses a problem for people’s health. The solution to this could lie in passive wood construction or by installing effective dual-flow mechanical ventilation systems.
Ventilation to improve air quality
The report of the Passivhaus Building Platform speaks of ventilation as the most appropriate measure to improve the air quality of the centers. The conclusion is that you have to invest in schools, you have to do works, dedicate EU funds to the rehabilitation of educational centers to achieve health benefits, better academic results, economic savings, ecological benefits and an economic reactivation. Other countries such as Germany have already announced an investment of 500 million euros to improve the ventilation of their public buildings.
Controlled double-flow mechanical ventilation with heat recovery is one of the 5 fundamental criteria of Passivhaus building, until now focused on achieving the lowest possible energy consumption. The pandemic makes the goal focus on health. The other basic principles of this type of construction are: excellent thermal insulation, high performance windows and doors, absence of thermal bridges and air tightness.
We spend 80% of our time indoors and it is vitally important to ensure that toxicity levels are minimal.
The classrooms are spaces with a large influx of users and sudden changes in temperature, and loaded environments mean that the levels of attention and concentration are not good. A level of CO is required for correct indoor air quality.2 below 1,000 ppm and for this there should be an outside air flow of 30 m³ / h per person.
But the level of CO2 It is not the only factor that determines good indoor air quality. Another element to take into account is the relative humidity of the classroom. When it is very low, it is easier for bacteria and viruses to grow in the air. It is also not correct to have a high level of relative humidity, since fungi can appear and affect the respiratory system. Ideally, it should be between 40% -60% to reduce the risk of spreading infectious diseases.
All these maxims can also be applied to buildings with sensitive users such as nursing homes.
The lightweight timber framing precast system of ARQUIMA it is based on criteria of bioclimatic, passive and maximum energy efficiency architecture. The company, which was a pioneer in Sustainable Construction in Spain, developing its own construction system already in 2008, recently presented the first homes in Europe with the highest double certification in energy efficiency and sustainability (Passivhaus Premium and 5 GREEN Sheets from the Green Building Council Spain GBCe), located in the Metropolitan Area of Barcelona and is building the first passive multi-family wooden building in the Balearic Islands in the city of Palma de Mallorca.
Covid-19 and the possibility of new pandemics directly affect the Architecture and Construction sector and experts point out that the trend is to bet on homes and facilities such as schools, hotels, offices or hospitals that are more natural, more sustainable and healthier.