Abstract
The pandemic has highlighted the extreme importance of indoor air quality (IAQ). Especially in schools, so places that have always been critical for the spread of highly contagious viral diseases, IAQ is an increasingly necessary need. In the province of Treviso, a tailored system has been installed: there are both winter and summer air conditioning, plus AHU’s capable of guaranteeing the necessary air exchange to obtain a healthy level of the air inside the classrooms. The county also intends to replicate this experience in all schools of its territory and monitor the operation of these plants continuously. The important matter is not only to implement systems equipped with HRV (heat recovery ventilation), but also to equip them with automation and control systems capable of implementing an high automation standard according to EN 15232-1 and a high SRI or Smart Readiness Indicator defined by the EPBD III directive 844/2018. A high index ensures an implementation of a distributed intelligence system all over the plant, connected to the cloud and capable of extrapolating the physical variables, then processing them with ML (machine learning) and AI (artificial intelligence) techniques optimized for the HVAC algorithms. At the end, it is not enough to detect quantities such as EI (environmental index) but it is also necessary to process the data for the purposes of predictive maintenance and much more.
Highlights
The pandemic has indelibly marked our lives and the approach to the design of air conditioning systems, focusing on the quality of the air
-Min air flow per classroom: 530 m3/h -Air flow rooms accessories: 350 m3/h air extraction for each toilet block -Heat Pump thermal power for ambient air conditioning: 105.4 kW -Heat pump thermal power dedicated for DHW production: 0.8kW + 1.2kW electrical resistance integration
● temperature ● relative humidity ● air quality in terms of CO2 concentration The most interesting part is related to air quality, which denotes a top-down aeraulic circuit, having vents directed towards the windows and the air recovery done in the opposite side of the classroom, at the bottom
Summary
The pandemic has indelibly marked our lives and the approach to the design of air conditioning systems, focusing on the quality of the air. The issue of air quality was not so acute, so the few people who had the foresight to think about it before, find themselves ahead of the others. In this case we are talking about the far-sighted foresight of Eng. Fabio Fabris and Eng. Sandro Michielin of the Province of Treviso, who were grappling with the expansion of an. What fully realized the futuristic vision of the Province and its designers in this plant is the adoption of controllers based on a truly innovative visual programming system and even more than the adoption of a BMS based on the Haystack system. Through this system it is possible to combine BMS in the field with high-level software such as cloud Computing, Machine Learning and artificial intelligence
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