PSI - Issue 29

Carla Balocco et al. / Procedia Structural Integrity 29 (2020) 25–33 Balocco, Vicario and De Vita / Structural Integrity Procedia 00 (2019) 000 – 000

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massive building. It can be noted that the plant working conditions produce a damping effect on the outdoor environmental load, combinedwith the appreciable thermal properties of thebuilding. Results showthe plant system efficacy for guaranteeingpreventive conservationconditions but also it important adaptivity and acclimatizationdue to its thermal peaks dampingeffect, and microclimatic extreme variations reduction, tha t are the most damaging for artworks and building. Building thermo-physics combined with plant working conditions, assure stability requirements of microclimate that play a key role in the deterioration processes. Varia tions in thermo -physical parameters that ate as damaging as their absolute values, are reduced. The humidity ratio (x; i.e. the ra tio between mass of wa ter vapour and dry air, g r /kg)was ca lcula tedusing the sa turation pressure evaluatedas function of T and RH.

Fig. 5. Air Temperature trend for the period with plant off (from 18 October to 28 October 2019)